GET and POST Methods - The client browser uses two methods to send information from the client to the webserver,These methods are GET Method and POST Method
Project link : https://phpgurukul.com/get-and-post-methods/
The document discusses GET and POST methods in PHP. GET retrieves data from forms by sending name-value pairs in the URL, while POST sends data invisibly within the request. GET has limits on data size and is less secure, while POST has no size limits and is more secure. Both populate the $_GET and $_POST superglobals in PHP. The $_REQUEST variable contains data from GET, POST, and cookies to retrieve form data regardless of submission method.
The document discusses the HTTP request methods GET and POST. GET requests retrieve data from a specified resource, while POST submits data to be processed by a specified resource. Both can send requests and receive responses. GET requests can be cached, bookmarked, and have data restrictions. POST requests are never cached, cannot be bookmarked, and have no data restrictions. The document compares the advantages and disadvantages of GET and POST and provides examples of appropriate uses for each.
This document discusses HTML forms and how they are used to send data to a server. It explains the GET and POST methods for sending form data, as well as the PHP superglobal variables ($_GET, $_POST, $_REQUEST) that are used to collect the data on the server side. The GET method appends data to the URL and has limitations on size, while the POST method embeds data in the HTTP request body and has no size limits, making it more secure for sensitive data. Both methods create arrays of key-value pairs from the form fields to populate the respective superglobal variables.
This document discusses the GET and POST methods in PHP. The GET method is less secure as the submitted data is visible in the URL. It also has limits on data size. The POST method is more secure as data is not visible in the URL and there are no limits on data size. Examples are given showing how to retrieve submitted form data using the GET and POST superglobal arrays ($_GET and $_POST) in PHP. Contact details are provided at the end for the company that created the presentation.
Get requests are conventionally used for static resources like images or style sheets, with request parameters appended to the URL. Post requests are used for dynamic resources like form submissions, with request parameters sent in the request body instead of the URL. The main differences are that GET parameters are visible in the browser bar, have a smaller size limit, and are generally used for retrieving data, while POST parameters are not visible and allow sending unlimited data, generally for actions like submitting a form.
This document discusses web forms using PHP. It explains how forms send data using the GET and POST methods, and how PHP retrieves form data using the $_GET and $_POST variables. The main differences between GET and POST are described, such as GET having data limits while POST does not, and POST being more secure since data is not appended to the URL. An example form and PHP code is provided to demonstrate retrieving and displaying submitted form data.
The document discusses form processing in PHP, including how to read data from forms using $_REQUEST, $_GET, and $_POST superglobals and validate user input data before using it. It provides examples of validating data types and required fields, and processing forms using both GET and POST requests.
1. The document describes the common HTTP methods used to retrieve or send data over the web, including GET, HEAD, POST, PUT, DELETE, CONNECT, OPTIONS, and TRACE.
2. GET is used to retrieve a resource, HEAD is like GET but only returns headers, and POST sends data to a server like form data or file uploads.
3. PUT replaces a resource with uploaded content, DELETE removes a resource, and CONNECT establishes a tunnel. OPTIONS returns supported methods and TRACE echoes a request for debugging.
The document discusses GET and POST methods in PHP. GET retrieves data from forms by sending name-value pairs in the URL, while POST sends data invisibly within the request. GET has limits on data size and is less secure, while POST has no size limits and is more secure. Both populate the $_GET and $_POST superglobals in PHP. The $_REQUEST variable contains data from GET, POST, and cookies to retrieve form data regardless of submission method.
The document discusses the HTTP request methods GET and POST. GET requests retrieve data from a specified resource, while POST submits data to be processed by a specified resource. Both can send requests and receive responses. GET requests can be cached, bookmarked, and have data restrictions. POST requests are never cached, cannot be bookmarked, and have no data restrictions. The document compares the advantages and disadvantages of GET and POST and provides examples of appropriate uses for each.
This document discusses HTML forms and how they are used to send data to a server. It explains the GET and POST methods for sending form data, as well as the PHP superglobal variables ($_GET, $_POST, $_REQUEST) that are used to collect the data on the server side. The GET method appends data to the URL and has limitations on size, while the POST method embeds data in the HTTP request body and has no size limits, making it more secure for sensitive data. Both methods create arrays of key-value pairs from the form fields to populate the respective superglobal variables.
This document discusses the GET and POST methods in PHP. The GET method is less secure as the submitted data is visible in the URL. It also has limits on data size. The POST method is more secure as data is not visible in the URL and there are no limits on data size. Examples are given showing how to retrieve submitted form data using the GET and POST superglobal arrays ($_GET and $_POST) in PHP. Contact details are provided at the end for the company that created the presentation.
Get requests are conventionally used for static resources like images or style sheets, with request parameters appended to the URL. Post requests are used for dynamic resources like form submissions, with request parameters sent in the request body instead of the URL. The main differences are that GET parameters are visible in the browser bar, have a smaller size limit, and are generally used for retrieving data, while POST parameters are not visible and allow sending unlimited data, generally for actions like submitting a form.
This document discusses web forms using PHP. It explains how forms send data using the GET and POST methods, and how PHP retrieves form data using the $_GET and $_POST variables. The main differences between GET and POST are described, such as GET having data limits while POST does not, and POST being more secure since data is not appended to the URL. An example form and PHP code is provided to demonstrate retrieving and displaying submitted form data.
The document discusses form processing in PHP, including how to read data from forms using $_REQUEST, $_GET, and $_POST superglobals and validate user input data before using it. It provides examples of validating data types and required fields, and processing forms using both GET and POST requests.
1. The document describes the common HTTP methods used to retrieve or send data over the web, including GET, HEAD, POST, PUT, DELETE, CONNECT, OPTIONS, and TRACE.
2. GET is used to retrieve a resource, HEAD is like GET but only returns headers, and POST sends data to a server like form data or file uploads.
3. PUT replaces a resource with uploaded content, DELETE removes a resource, and CONNECT establishes a tunnel. OPTIONS returns supported methods and TRACE echoes a request for debugging.
This document discusses several techniques for using Java applets as front ends to server-side programs:
1. Sending GET requests and having the browser display results
2. Sending GET requests and processing results within the applet via HTTP tunneling
3. Using HTTP tunneling to exchange complex Java objects between applets and servlets via object serialization
4. Sending POST requests and processing results within the applets via HTTP tunneling
5. Bypassing the HTTP server entirely by using direct communication methods like RMI, JDBC, or raw sockets.
HTTP requests and responses follow a generic message format that includes a start line, message headers, an optional message body, and optional trailers. The start line indicates the request method and URI for requests or the HTTP version and status code for responses. Headers provide additional metadata about the message, sender, recipient, or content. The body carries request data or response content. Trailers are rarely used and provide additional headers after chunked content.
This document discusses different ways that PHP can receive input from forms and other sources like databases. It covers using GET and POST methods to pass variables between pages via URLs or form submissions. It also provides an example of linking a form to a database by connecting in PHP, obtaining POST variables, writing an SQL query, and redirecting to another page that displays the database records.
The document discusses REST (REpresentational State Transfer), an architectural style for building distributed systems. It covers REST concepts like resources, representations, URIs, HTTP methods, caching, and versioning. It provides guidance on designing RESTful APIs, including determining resources, supported methods, and return codes. Content negotiation and tools for testing REST APIs are also mentioned.
HTTP Request Header and HTTP Status CodeAbhishek L.R
This document provides information about HTTP and HTTPS request headers and status codes. It defines HTTP and HTTPS, describing HTTPS as HTTP plus cryptographic protocols for security. It lists some important HTTP request headers and their descriptions, as well as HTTPS status codes grouped into classes: informational (1xx), successful (2xx), redirects (3xx), client errors (4xx), and server errors (5xx). Each status code class is summarized with example response codes and descriptions.
The document provides an overview of how the web works, including definitions and explanations of key concepts like servers, clients, protocols, URLs, HTML, and considerations for diversity and accessibility on the web. It then walks through steps to create a simple web page for a restaurant website, including adding basic document structure and text elements, an image, and basic styling with CSS.
The document discusses HTTP request and response messages. Some key points:
- HTTP is a stateless, client-server protocol where clients send requests to servers and servers return response messages. Requests use methods like GET and POST and URLs to identify resources.
- Request messages contain a start line with the method, URL, and HTTP version, followed by header lines. Response messages contain a start line with the status code and reason, followed by header lines and an optional body.
- Common status codes include 200 for success, 404 for not found, 401 for unauthorized, and 500 for server errors.
- HTML forms can send data via GET by adding parameters to the URL or POST by placing them in the
Introduce the Java Enterprise (J2EE) model
Present the Hypertext Markup Language (HTML) tags
Present the Hypertext Transmission Protocol (HTTP)
Define an HTTP client request, server response, and HTTP request methods
HTTP headers carry important information in web requests and responses between browsers and servers. They define the request and response details like the request method, resources used, sender and receiver details, and content type. Common HTTP headers provide information on the request method, resources consumed, sender and destination, and content type. Tools like the Live HTTP Headers browser add-on or inspect element can be used to view HTTP headers and their carried information.
HTTP is the protocol of the web, and in this session we will look at HTTP from a web developer's perspective. We will cover resources, messages, cookies, and authentication protocols and we will see how the web scales to meet demand using cache headers. Armed with the fundamentals about HTTP, you will have the knowledge not only to build better Web/Mobile applications but also for consuming Web API.
URI refers to Uniform Resource Identifiers, which include URLs and URNs used to identify resources on the web. URLs contain the protocol, host, path, and name to locate a resource using its network location. URIs are encoded to represent unsafe characters like spaces using percent encoding. Web browsers make HTTP requests to web servers, which respond by sending the requested pages back to the browser over the TCP protocol in a stateless manner according to the HTTP specification. HTML forms allow collecting user input on web pages for submission to servers via the GET or POST methods.
The document discusses PHP forms and includes the following key points:
1. Forms can submit data via GET and POST methods, with GET appending data to the URL and POST transmitting data hiddenly. Both methods store data in superglobal arrays ($_GET and $_POST).
2. Form validation ensures required fields are filled and data meets specified criteria. Common validations check for required fields, valid email addresses, URLs, and more.
3. HTML form elements like text fields, textareas, radio buttons, drop-downs are used to collect user input. PHP processes submitted data and can validate required fields are not empty.
The document discusses the Generic Connection Framework (GCF) in Java, which provides an extensible framework for I/O and networking. It describes the connection hierarchy in GCF, including interfaces like Connection, InputConnection, and HttpConnection. It also covers how to create and use HTTP connections to make client requests and process server responses in Java, including using GET and POST methods. Specific examples are given around retrieving data from a servlet and database using GET and POST.
The document provides an overview of PHP and its capabilities compared to other web technologies. It discusses how PHP allows for dynamic content and user interactivity on websites, unlike static HTML. It also summarizes HTTP and the client-server model, and how PHP integrates as a common gateway interface (CGI) to enable server-side scripting. Key topics covered include the history of HTML/XHTML, HTTP request/response formats, and how PHP addresses limitations of static websites by running on the server-side.
The document discusses the web request and response lifecycle from DNS lookup through HTTP methods and status codes. It describes the process of DNS lookup involving the browser, operating system, resolving name server, root name server, top-level domain name server and authoritative name server to resolve a domain name like www.yahoo.com to an IP address. It then explains the stateless HTTP protocol and how it can deliver different types of data, as well as the TCP three-way handshake process for establishing a connection and transmitting data using windows and acknowledgements. The document also briefly mentions HTTP requests, responses, methods including safe and idempotent methods, and status codes.
The document discusses various aspects of web technology including:
1. It describes how the internet is organized with clients making requests to servers and responses being sent back over various internet layers using protocols like HTTP and TCP.
2. It explains how URLs work to identify web pages and resources, with domains mapped to IP addresses by the DNS system in a hierarchical structure.
3. It provides an overview of HTML, the publishing language of the web, and common tags used to structure and format text, images, and links on web pages.
This paper is part of course from gray hat | security (grayhat.in)
In order to hunt for web application bugs, you would always like to know technologies in detailed. This paper will helping you getting hands-on knowledge of HTTP/HTTPS, COOKIES, SOP, CORS and many references to other valuable topics to test for web applications.
HTTP is the protocol used to deliver web pages over the internet. It uses a request/response model where clients make HTTP requests to servers, which respond with HTTP responses. Common HTTP request methods include GET, POST, PUT, DELETE, and HEAD. A request contains an initial line specifying the method, URL, and protocol version. A response contains a status line with the protocol version, status code, and description. Common status codes include 2xx for success, 3xx for redirects, 4xx for client errors, and 5xx for server errors.
This document discusses PHP global variables and form handling. It explains that $GLOBALS and superglobals like $_GET and $_POST can be accessed from anywhere without special declarations. $_GET collects URL parameters while $_POST collects form data submitted via HTTP POST. GET is generally used for non-sensitive data as its values are visible in the URL, while POST has no data limits and values are embedded in the request body. $_SERVER contains information about server headers, paths, and script locations.
The document discusses various aspects of working with PHP forms and form data, including:
1) HTML forms use tags like <form> and <input> to collect user data in fields like text boxes and radio buttons. Forms can use GET or POST methods to transmit the data.
2) PHP provides superglobal variables ($_GET, $_POST, $_REQUEST) to access transmitted form data in the backend.
3) It's important to validate form data for security, like checking for required fields and proper email/URL formats. Functions like filter_var() and regular expressions can help validate different field types.
This document discusses several techniques for using Java applets as front ends to server-side programs:
1. Sending GET requests and having the browser display results
2. Sending GET requests and processing results within the applet via HTTP tunneling
3. Using HTTP tunneling to exchange complex Java objects between applets and servlets via object serialization
4. Sending POST requests and processing results within the applets via HTTP tunneling
5. Bypassing the HTTP server entirely by using direct communication methods like RMI, JDBC, or raw sockets.
HTTP requests and responses follow a generic message format that includes a start line, message headers, an optional message body, and optional trailers. The start line indicates the request method and URI for requests or the HTTP version and status code for responses. Headers provide additional metadata about the message, sender, recipient, or content. The body carries request data or response content. Trailers are rarely used and provide additional headers after chunked content.
This document discusses different ways that PHP can receive input from forms and other sources like databases. It covers using GET and POST methods to pass variables between pages via URLs or form submissions. It also provides an example of linking a form to a database by connecting in PHP, obtaining POST variables, writing an SQL query, and redirecting to another page that displays the database records.
The document discusses REST (REpresentational State Transfer), an architectural style for building distributed systems. It covers REST concepts like resources, representations, URIs, HTTP methods, caching, and versioning. It provides guidance on designing RESTful APIs, including determining resources, supported methods, and return codes. Content negotiation and tools for testing REST APIs are also mentioned.
HTTP Request Header and HTTP Status CodeAbhishek L.R
This document provides information about HTTP and HTTPS request headers and status codes. It defines HTTP and HTTPS, describing HTTPS as HTTP plus cryptographic protocols for security. It lists some important HTTP request headers and their descriptions, as well as HTTPS status codes grouped into classes: informational (1xx), successful (2xx), redirects (3xx), client errors (4xx), and server errors (5xx). Each status code class is summarized with example response codes and descriptions.
The document provides an overview of how the web works, including definitions and explanations of key concepts like servers, clients, protocols, URLs, HTML, and considerations for diversity and accessibility on the web. It then walks through steps to create a simple web page for a restaurant website, including adding basic document structure and text elements, an image, and basic styling with CSS.
The document discusses HTTP request and response messages. Some key points:
- HTTP is a stateless, client-server protocol where clients send requests to servers and servers return response messages. Requests use methods like GET and POST and URLs to identify resources.
- Request messages contain a start line with the method, URL, and HTTP version, followed by header lines. Response messages contain a start line with the status code and reason, followed by header lines and an optional body.
- Common status codes include 200 for success, 404 for not found, 401 for unauthorized, and 500 for server errors.
- HTML forms can send data via GET by adding parameters to the URL or POST by placing them in the
Introduce the Java Enterprise (J2EE) model
Present the Hypertext Markup Language (HTML) tags
Present the Hypertext Transmission Protocol (HTTP)
Define an HTTP client request, server response, and HTTP request methods
HTTP headers carry important information in web requests and responses between browsers and servers. They define the request and response details like the request method, resources used, sender and receiver details, and content type. Common HTTP headers provide information on the request method, resources consumed, sender and destination, and content type. Tools like the Live HTTP Headers browser add-on or inspect element can be used to view HTTP headers and their carried information.
HTTP is the protocol of the web, and in this session we will look at HTTP from a web developer's perspective. We will cover resources, messages, cookies, and authentication protocols and we will see how the web scales to meet demand using cache headers. Armed with the fundamentals about HTTP, you will have the knowledge not only to build better Web/Mobile applications but also for consuming Web API.
URI refers to Uniform Resource Identifiers, which include URLs and URNs used to identify resources on the web. URLs contain the protocol, host, path, and name to locate a resource using its network location. URIs are encoded to represent unsafe characters like spaces using percent encoding. Web browsers make HTTP requests to web servers, which respond by sending the requested pages back to the browser over the TCP protocol in a stateless manner according to the HTTP specification. HTML forms allow collecting user input on web pages for submission to servers via the GET or POST methods.
The document discusses PHP forms and includes the following key points:
1. Forms can submit data via GET and POST methods, with GET appending data to the URL and POST transmitting data hiddenly. Both methods store data in superglobal arrays ($_GET and $_POST).
2. Form validation ensures required fields are filled and data meets specified criteria. Common validations check for required fields, valid email addresses, URLs, and more.
3. HTML form elements like text fields, textareas, radio buttons, drop-downs are used to collect user input. PHP processes submitted data and can validate required fields are not empty.
The document discusses the Generic Connection Framework (GCF) in Java, which provides an extensible framework for I/O and networking. It describes the connection hierarchy in GCF, including interfaces like Connection, InputConnection, and HttpConnection. It also covers how to create and use HTTP connections to make client requests and process server responses in Java, including using GET and POST methods. Specific examples are given around retrieving data from a servlet and database using GET and POST.
The document provides an overview of PHP and its capabilities compared to other web technologies. It discusses how PHP allows for dynamic content and user interactivity on websites, unlike static HTML. It also summarizes HTTP and the client-server model, and how PHP integrates as a common gateway interface (CGI) to enable server-side scripting. Key topics covered include the history of HTML/XHTML, HTTP request/response formats, and how PHP addresses limitations of static websites by running on the server-side.
The document discusses the web request and response lifecycle from DNS lookup through HTTP methods and status codes. It describes the process of DNS lookup involving the browser, operating system, resolving name server, root name server, top-level domain name server and authoritative name server to resolve a domain name like www.yahoo.com to an IP address. It then explains the stateless HTTP protocol and how it can deliver different types of data, as well as the TCP three-way handshake process for establishing a connection and transmitting data using windows and acknowledgements. The document also briefly mentions HTTP requests, responses, methods including safe and idempotent methods, and status codes.
The document discusses various aspects of web technology including:
1. It describes how the internet is organized with clients making requests to servers and responses being sent back over various internet layers using protocols like HTTP and TCP.
2. It explains how URLs work to identify web pages and resources, with domains mapped to IP addresses by the DNS system in a hierarchical structure.
3. It provides an overview of HTML, the publishing language of the web, and common tags used to structure and format text, images, and links on web pages.
This paper is part of course from gray hat | security (grayhat.in)
In order to hunt for web application bugs, you would always like to know technologies in detailed. This paper will helping you getting hands-on knowledge of HTTP/HTTPS, COOKIES, SOP, CORS and many references to other valuable topics to test for web applications.
HTTP is the protocol used to deliver web pages over the internet. It uses a request/response model where clients make HTTP requests to servers, which respond with HTTP responses. Common HTTP request methods include GET, POST, PUT, DELETE, and HEAD. A request contains an initial line specifying the method, URL, and protocol version. A response contains a status line with the protocol version, status code, and description. Common status codes include 2xx for success, 3xx for redirects, 4xx for client errors, and 5xx for server errors.
This document discusses PHP global variables and form handling. It explains that $GLOBALS and superglobals like $_GET and $_POST can be accessed from anywhere without special declarations. $_GET collects URL parameters while $_POST collects form data submitted via HTTP POST. GET is generally used for non-sensitive data as its values are visible in the URL, while POST has no data limits and values are embedded in the request body. $_SERVER contains information about server headers, paths, and script locations.
The document discusses various aspects of working with PHP forms and form data, including:
1) HTML forms use tags like <form> and <input> to collect user data in fields like text boxes and radio buttons. Forms can use GET or POST methods to transmit the data.
2) PHP provides superglobal variables ($_GET, $_POST, $_REQUEST) to access transmitted form data in the backend.
3) It's important to validate form data for security, like checking for required fields and proper email/URL formats. Functions like filter_var() and regular expressions can help validate different field types.
The document discusses PHP form handling and validation. It covers using the GET and POST methods to submit form data, and the PHP superglobals like $_GET and $_POST that contain this submitted data. It then discusses validating form fields, including checking for required fields, validating names, emails, and URLs. It provides code examples for validating field values and displaying error messages. It also covers basics of SQL like using CREATE TABLE, INSERT, SELECT, WHERE clauses, and JOINs.
This document discusses PHP forms and form handling methods. It covers the GET and POST methods for submitting form data to servers, how PHP handles form data using the $_GET and $_POST variables, validating form data with isset(), using cookies to store data on the client side, and using PHP sessions to store data on the server side. The main differences between GET and POST are also outlined.
Lecture7 form processing by okello erickokelloerick
This document discusses handling HTML forms in PHP and inserting the form data into a database. It provides an example of a simple HTML form with name and email inputs that is submitted to a PHP file. It then explains the differences between GET and POST methods for form submission and when each should be used. It outlines getting the form data in the PHP script and the three steps for saving the form data to a MySQL database: connecting to the database, constructing a SQL command string, and executing the SQL command string.
This document discusses HTML forms and how they are used to send data to a server. It explains that forms contain input controls placed between opening and closing form tags. The form's method can be set to either GET or POST. GET appends data to the URL and has limits, while POST embeds data securely in the HTTP request body without limits. The PHP superglobals $_GET, $_POST, and $_REQUEST can be used to access form data sent via GET, POST, or either method respectively.
Working with Data and built-in functions of PHPmohanaps
This PPT for PHP covers:
Working with Data
Form and input elements validating the user input, passing variables
between pages, through GET, through POST, through REQUEST and
RESPOND, string functions - chr, ord, strtolower, strtoupper, strlen, ltrim,
rtrim, substr, strcmp, math functions - abs, ceil, floor, round, fmod, min,
max, pow, sqrt, rand, array functions - count, list, in_array, current, next,
previous, end, each, sort, rsort, Rest API.
This document discusses CGI programming and HTTP cookies. It provides an overview of CGI and how it is used to send data to servers via the GET and POST methods. It also explains how templates can be used to dynamically generate web pages. Finally, it covers HTTP cookies in detail, including how they are delivered, valid parameters for setting cookies, the different types (persistent and non-persistent), and how they are stored on a user's device.
This document provides information on handling PHP forms. It discusses how the $_GET and $_POST superglobals are used to collect form data via the GET and POST methods. It provides an example of a simple HTML form and how to display submitted data using $_GET and $_POST. It discusses when to use GET vs POST and how to validate form data with PHP to protect against malicious code. It also covers required fields, validating email addresses and URLs, and keeping form values populated after submission. The document is intended to guide readers through processing PHP forms securely and with validation.
This document discusses PHP forms and form validation. It explains that forms allow users to enter and submit data via HTML forms. The form data is sent to a PHP file for processing via the POST or GET HTTP methods. It provides examples of basic PHP forms using POST and GET, and how to display submitted form data. The document also discusses the differences between GET and POST, and emphasizes the importance of validating form data on the server-side to protect against hackers and spam. It provides examples of validating URLs, emails, names, and other common form fields.
This document discusses forms and global variables in PHP. It covers creating forms using the <form> element and GET and POST methods. It also discusses accessing form data using $_GET and $_POST superglobals. The document explains validating form input to prevent attacks and escaping output with htmlspecialchars(). It introduces global variables in PHP like $GLOBALS and superglobals like $_SERVER that are available everywhere.
This document provides an introduction to embedding PHP code in HTML documents and sending form data from the client to the server. It discusses using PHP to echo HTML tags and strings. It explains how form data is sent via GET and POST methods and how it can be accessed in the PHP file specified in the form's action using the $_GET, $_POST and $_REQUEST superglobal arrays. It also covers uploading files via HTML forms and accessing file data in the PHP file using the $_FILES array.
Introduction to Web Programming with PerlDave Cross
This document provides an introduction to creating dynamic web pages using Perl and CGI (Common Gateway Interface). It covers the basics of HTTP requests and responses, how CGI allows programs to generate dynamic output for the web server, and using Perl and the CGI.pm module to write simple CGI programs. These programs can accept input from HTML forms, handle GET and POST requests, and produce various types of output like text, HTML and images. Debugging techniques are also discussed. The document concludes with a section on web security and potential vulnerabilities in CGI programs.
The document discusses PHP forms and form handling. It explains that the $_GET and $_POST superglobals are used to collect form data submitted via GET or POST methods. It provides an example HTML form that submits to a PHP file and displays the submitted data. The differences between GET and POST are outlined, including when each method should be used. Validation of required fields is demonstrated with PHP code. Other PHP topics like dates, times, and including files are briefly covered.
This document provides an introduction to web techniques and PHP error handling. It discusses HTTP basics including requests, responses, and methods. It also covers PHP variables, server information, processing forms, and maintaining state. Regarding error handling, the document defines PHP errors like notices, warnings, and fatal errors. It discusses using die(), custom error handling functions, and error reporting levels to handle errors in PHP.
This is the presentation from Null/OWASP/g4h December Bangalore MeetUp by Akash Mahajan.
technology.inmobi.com/events/null-owasp-g4h-december-meetup
Abstract:
This will cover the basics of Hyper Text Transfer Protocol. You will learn how to send HTTP requests like GET, POST by crafting them manually and using a command line tool like CURL. You will also see how session management using cookies happens using the same tools.
To practice along please install curl (http://curl.haxx.se/download.html).
The constrained application protocol (co ap) part 2Hamdamboy (함담보이)
The document provides an overview of the Constrained Application Protocol (CoAP), including:
- CoAP is a web transfer protocol for constrained nodes and networks that can be used as a lightweight alternative to HTTP. It uses UDP instead of TCP for transport and is designed for constrained environments.
- CoAP supports the same methods as HTTP (GET, POST, PUT, DELETE) but uses a simpler binary header and message format. It includes features like asynchronous messaging, multicast support, and optional block transfers and observations.
- CoAP can be secured using DTLS and includes options for caching, proxying, and resource discovery. It is implemented in many IoT devices and platforms and allows constrained nodes to integrate
The constrained application protocol (coap) part 2Hamdamboy
This document discusses the Constrained Application Protocol (CoAP) and its features. It describes CoAP's methods like GET, POST, PUT, DELETE and how they work. It explains CoAP's message format including the message header and option format. It also covers CoAP's caching model and how it uses options like Max-Age and Etag for cache validation. The document provides an overview of CoAP as a protocol for constrained devices and networks.
The constrained application protocol (coap) part 2Hamdamboy (함담보이)
This document discusses the Constrained Application Protocol (CoAP), which is a web transfer protocol for resource-constrained devices. It describes CoAP methods like GET, POST, PUT, DELETE and their usage. It also explains CoAP message format, options, caching model, and how CoAP can be used for machine-to-machine applications and can be proxied to HTTP.
This document discusses web scraping using PHP. It provides an overview of HTTP requests like GET and POST, libraries for making requests like cURL and PEAR HTTP Client, parsing responses, and best practices for web scraping applications.
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How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
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How to Add Chatter in the odoo 17 ERP ModuleCeline George
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
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1. GET and POST Methods
The client browser uses two methods to send
information from the client to the web server. These
methods are GET and POST. However, before
sending the information, the browser first encodes
the information using the coding scheme called URL
encoding.
In this coding scheme, key-value pairs, which are
here name-value pairs, which are here name-value
pairs, are combined together in such a way that
different name-value pairs are separated by &
(ampersand). Any whitespaces are replaced by the
plus sign(+) and non-alphanumeric characters are
replaced with their hexadecimal values. Once the
encoding process is over, the data is sent to the web
server. https://phpgurukul.com/get-and-post-
methods/
2. The GET Method
When the GET method is used for sending
information to the web server, it sends the same
along with the page URL. The URL is appended
by the encoded information and the question
mark sign (?) separates the former from the
latter. Some of the key things to note about the
use of this method include –
Since this method appends the page URL, the
sent information will also appear in the logs of
the server.
The maximum number of characters that can be
sent using the GET method is 1024 characters.
There is an inherent issue of compromised
confidentiality with this method. Therefore, its use
must be avoided when you are sending
passwords or critical information to the
webserver.
https://phpgurukul.com/get-and-post-
methods/
3. Another inherent limitation of the GET
method is that documents and images
cannot be sent to the server using this
method.
Besides the above-mentioned, it is also
possible to access the data sent using
this method by retrieving the
QUERY_STRING environment
variable. Therefore, data is not safe.
It is possible to access all the sent
information using this method by
accessing $_GET, which is an
associative array provided by PHP for
this purpose. https://phpgurukul.com/get-and-post-
methods/
5. The POST Method
An alternative to the GET method is the POST method. This
method makes uses of HTTP headers to transfer information
from the client to the server. The encoded information is out
into the header. Some of the things that you must know about
the use of this method for information transfer has been listed
below-
Unlike the GET method, there is no limitation on the number
of characters that can be sent using this method.
It is possible to send binary as well as ASCII data using this
method.
As far as the security of data is concerned, data security
totally lies in the hands of the HTTP protocol. You can ensure
higher security of data by using HTTP secure.
All the data using the POST method can be accessed using
the $_POST associative array.
You can try the sample code given below to understand how
this method is used.
https://phpgurukul.com/get-and-post-
methods/
7. The $_REQUEST Variable
The contents of $_GET and $_POST
are available in $_REQUEST. Besides
this, $_REQUEST also contains data
associated with $_COOKIE> The form
data sent to the webserver using both
the methods namely GET and POST
can be accessed by accessing this
variable.
Here $_PHP_SELF variable contains
the name of the self script in which it is
being called.
https://phpgurukul.com/get-and-post-
methods/
8. For More Info
Visit: https://phpgurukul.com/get-and-
post-methods/
https://phpgurukul.com/get-and-post-
methods/