This document provides an introduction and overview of PHP, including:
1. PHP is an open-source scripting language used for web development that allows developers to add dynamic content to websites. It can be embedded into HTML and is commonly used to create dynamic websites.
2. Key features of PHP include that it is free, runs on most web servers, and supports a wide range of databases. It allows developers to generate dynamic page content, collect form data, and more.
3. The document discusses PHP syntax, variables, embedding PHP code in web pages, and outputting data through functions like print(), echo(), and sprintf(). It provides examples of how to write PHP code and integrate it into HTML
PHP is a server-side web programming language that is broadly used for website/web development. Hence, PHP is productive with good security, reliable and fast to customise for developing web applications. We have shared some of the good points bases on that. We hope it will be helpful to you work with it.
PHP is a server-side web programming language that is broadly used for website/web development. Hence, PHP is productive with good security, reliable and fast to customise for developing web applications. We have shared some of the good points bases on that. We hope it will be helpful to you work with it.
Presentation of codeigniter to understand the framework and easy to understand for beginners.Codeigniter is php framework easy to learn and useful for start into web devlopment.
Advanced PHP Web Development Tools in 2015iScripts
Professional web developers make php web development absolutely stunning with the aid of different kinds of tools. A designer prefers tools after checking number of features, and the choice of the right tool for php web development is vital for creating user-friendliness and better interaction
Brief History of PHP
PHP (PHP: Hypertext Preprocessor) was created by Rasmus Lerdorf in 1994. It was initially developed for HTTP usage logging and server-side form generation in Unix.
PHP 2 (1995) transformed the language into a Server-side embedded scripting language. Added database support, file uploads, variables, arrays, recursive functions, conditionals, iteration, regular expressions, etc.
PHP 3 (1998) added support for ODBC data sources, multiple platform support, email protocols (SNMP,IMAP), and new parser written by Zeev Suraski and Andi Gutmans .
PHP 4 (2000) became an independent component of the web server for added efficiency. The parser was renamed the Zend Engine. Many security features were added.
PHP 5 (2004) adds Zend Engine II with object oriented programming, robust XML support using the libxml2 library, SOAP extension for interoperability with Web Services, SQLite has been bundled with PHP
What is PHP Used For?
PHP is a general-purpose server-side scripting language originally designed for web development to produce dynamic web pages
PHP can interact with MySQL databases
What is PHP?
PHP == ‘Hypertext Preprocessor’
Open-source, server-side scripting language
Used to generate dynamic web-pages
PHP scripts reside between reserved PHP tags
This allows the programmer to embed PHP scripts within HTML pages
What is PHP (cont’d)
Interpreted language, scripts are parsed at run-time rather than compiled beforehand
Executed on the server-side
Source-code not visible by client
‘View Source’ in browsers does not display the PHP code
Various built-in functions allow for fast development
Compatible with many popular databases
What does PHP code look like?
Structurally similar to C/C++
Supports procedural and object-oriented paradigm (to some degree)
All PHP statements end with a semi-colon
Each PHP script must be enclosed in the reserved PHP tag
Comments in PHP
Standard C, C++, and shell comment symbols
Variables in PHP
PHP variables must begin with a “$” sign
Case-sensitive ($Foo != $foo != $fOo)
Global and locally-scoped variables
Global variables can be used anywhere
Local variables restricted to a function or class
Certain variable names reserved by PHP
Form variables ($_POST, $_GET)
Server variables ($_SERVER)
Etc.
Variable usage
Arithmetic Operations
$a - $b // subtraction
$a * $b // multiplication
$a / $b // division
$a += 5 // $a = $a+5 Also works for *= and /=
Concatenation
Use a period to join strings into one.
If ... Else...
If (condition)
{
Statements;
}
Else
{
Statement;
}
While Loops
While (condition)
{
Statements;
}
Date Display
$datedisplay=date(“yyyy/m/d”);
Print $datedisplay;
# If the date is April 1st, 2009
# It would display as 2009/4/1
Month, Day & Date Format Symbols
Presentation of codeigniter to understand the framework and easy to understand for beginners.Codeigniter is php framework easy to learn and useful for start into web devlopment.
Advanced PHP Web Development Tools in 2015iScripts
Professional web developers make php web development absolutely stunning with the aid of different kinds of tools. A designer prefers tools after checking number of features, and the choice of the right tool for php web development is vital for creating user-friendliness and better interaction
Brief History of PHP
PHP (PHP: Hypertext Preprocessor) was created by Rasmus Lerdorf in 1994. It was initially developed for HTTP usage logging and server-side form generation in Unix.
PHP 2 (1995) transformed the language into a Server-side embedded scripting language. Added database support, file uploads, variables, arrays, recursive functions, conditionals, iteration, regular expressions, etc.
PHP 3 (1998) added support for ODBC data sources, multiple platform support, email protocols (SNMP,IMAP), and new parser written by Zeev Suraski and Andi Gutmans .
PHP 4 (2000) became an independent component of the web server for added efficiency. The parser was renamed the Zend Engine. Many security features were added.
PHP 5 (2004) adds Zend Engine II with object oriented programming, robust XML support using the libxml2 library, SOAP extension for interoperability with Web Services, SQLite has been bundled with PHP
What is PHP Used For?
PHP is a general-purpose server-side scripting language originally designed for web development to produce dynamic web pages
PHP can interact with MySQL databases
What is PHP?
PHP == ‘Hypertext Preprocessor’
Open-source, server-side scripting language
Used to generate dynamic web-pages
PHP scripts reside between reserved PHP tags
This allows the programmer to embed PHP scripts within HTML pages
What is PHP (cont’d)
Interpreted language, scripts are parsed at run-time rather than compiled beforehand
Executed on the server-side
Source-code not visible by client
‘View Source’ in browsers does not display the PHP code
Various built-in functions allow for fast development
Compatible with many popular databases
What does PHP code look like?
Structurally similar to C/C++
Supports procedural and object-oriented paradigm (to some degree)
All PHP statements end with a semi-colon
Each PHP script must be enclosed in the reserved PHP tag
Comments in PHP
Standard C, C++, and shell comment symbols
Variables in PHP
PHP variables must begin with a “$” sign
Case-sensitive ($Foo != $foo != $fOo)
Global and locally-scoped variables
Global variables can be used anywhere
Local variables restricted to a function or class
Certain variable names reserved by PHP
Form variables ($_POST, $_GET)
Server variables ($_SERVER)
Etc.
Variable usage
Arithmetic Operations
$a - $b // subtraction
$a * $b // multiplication
$a / $b // division
$a += 5 // $a = $a+5 Also works for *= and /=
Concatenation
Use a period to join strings into one.
If ... Else...
If (condition)
{
Statements;
}
Else
{
Statement;
}
While Loops
While (condition)
{
Statements;
}
Date Display
$datedisplay=date(“yyyy/m/d”);
Print $datedisplay;
# If the date is April 1st, 2009
# It would display as 2009/4/1
Month, Day & Date Format Symbols
PHP may seem to be a very easy language but many of don't know how PHP works. We will discuss the less known facts about PHP and we will also cover some common type of software design patterns used with PHP
PHP Programming course provides the knowledge necessary to design and develop dynamic, database-driven web pages using PHP version 5. PHP is a language written for the web, quick to learn, easy to deploy and provides substantial functionality required for e-commerce. This course introduces the PHP framework and syntax, and covers in depth the most important techniques used to build dynamic web sites. Students also learn how to configure PHP and the Apache Web Server. Comprehensive hands on exercises are integrated throughout to reinforce learning and develop real competency.
These pages will show how to process PHP forms with security in mind. Proper validation of form data is important to protect your form from hackers and spammers!
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
Online aptitude test management system project report.pdfKamal Acharya
The purpose of on-line aptitude test system is to take online test in an efficient manner and no time wasting for checking the paper. The main objective of on-line aptitude test system is to efficiently evaluate the candidate thoroughly through a fully automated system that not only saves lot of time but also gives fast results. For students they give papers according to their convenience and time and there is no need of using extra thing like paper, pen etc. This can be used in educational institutions as well as in corporate world. Can be used anywhere any time as it is a web based application (user Location doesn’t matter). No restriction that examiner has to be present when the candidate takes the test.
Every time when lecturers/professors need to conduct examinations they have to sit down think about the questions and then create a whole new set of questions for each and every exam. In some cases the professor may want to give an open book online exam that is the student can take the exam any time anywhere, but the student might have to answer the questions in a limited time period. The professor may want to change the sequence of questions for every student. The problem that a student has is whenever a date for the exam is declared the student has to take it and there is no way he can take it at some other time. This project will create an interface for the examiner to create and store questions in a repository. It will also create an interface for the student to take examinations at his convenience and the questions and/or exams may be timed. Thereby creating an application which can be used by examiners and examinee’s simultaneously.
Examination System is very useful for Teachers/Professors. As in the teaching profession, you are responsible for writing question papers. In the conventional method, you write the question paper on paper, keep question papers separate from answers and all this information you have to keep in a locker to avoid unauthorized access. Using the Examination System you can create a question paper and everything will be written to a single exam file in encrypted format. You can set the General and Administrator password to avoid unauthorized access to your question paper. Every time you start the examination, the program shuffles all the questions and selects them randomly from the database, which reduces the chances of memorizing the questions.
Understanding Inductive Bias in Machine LearningSUTEJAS
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Harnessing WebAssembly for Real-time Stateless Streaming PipelinesChristina Lin
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
HEAP SORT ILLUSTRATED WITH HEAPIFY, BUILD HEAP FOR DYNAMIC ARRAYS.
Heap sort is a comparison-based sorting technique based on Binary Heap data structure. It is similar to the selection sort where we first find the minimum element and place the minimum element at the beginning. Repeat the same process for the remaining elements.
6th International Conference on Machine Learning & Applications (CMLA 2024)ClaraZara1
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.
2. What is PHP?
1. PHP is a server scripting language, and a powerful tool for making dynamic and
interactive Web pages.
2. PHP is a widely-used, free, and efficient alternative to competitors such as
Microsoft's ASP.
3. PHP is an acronym for "PHP: Hypertext Preprocessor"
4. PHP is a widely-used, open source scripting language
5. PHP scripts are executed on the server
6. PHP is free to download and use
What is a PHP File?
1. PHP files can contain text, HTML, CSS, JavaScript, and PHP code
2. PHP code are executed on the server, and the result is returned to the browser as
plain HTML
3. PHP files have extension ".php"
3. What Can PHP Do?
1. PHP can generate dynamic page content
2. PHP can create, open, read, write, delete, and close files on the server
3. PHP can collect form data
4. PHP can send and receive cookies
5. PHP can add, delete, modify data in your database
6. PHP can be used to control user-access
7. PHP can encrypt data
8. With PHP you are not limited to output HTML. You can output images,
PDF files, and even Flash movies. You can also output any text, such as
XHTML and XML.
• Why PHP?
1. PHP runs on various platforms (Windows, Linux, Unix, Mac OS X, etc.)
2. PHP is compatible with almost all servers used today (Apache, IIS, etc.)
3. PHP supports a wide range of databases
4. PHP is free. Download it from the official PHP resource: www.php.net
5. PHP is easy to learn and runs efficiently on the server side
4. PHP INSTALLATION
• What Do I Need?
1. To start using PHP, you can:
2. Find a web host with PHP and MySQL support
3. Install a web server on your own PC, and then install PHP and MySQL
• Use a Web Host With PHP Support
1. If your server has activated support for PHP you do not need to do
anything.
2. Just create some .php files, place them in your web directory, and the
server will automatically parse them for you.
3. You do not need to compile anything or install any extra tools.
4. Because PHP is free, most web hosts offer PHP support.
• Set Up PHP on Your Own PC
1. However, if your server does not support PHP, you must:
2. install a web server
3. install PHP
4. install a database, such as MySQL
5. The official PHP website (PHP.net) has installation instructions for
PHP: http://php.net/manual/en/install.php
5. INSTALLATION PREREQUISITES
• Downloading Apache
• These days, Apache is packaged with all mainstream Linux distributions. So if
you’re using one of these platforms, chances are quite good you already have it
installed or can easily install it through your distribution’s packaging service (e.g.,
by running the apt-get command on Ubuntu).
• If you’re running Windows and would like to use Apache, then download the latest
stable Windows binary located within the binaries/win32 directory. Two binary
versions are available: one containing additional SSL-related capabilities and one
lacking these capabilities. It is suggested choosing the non-SSL capable version for
development purposes.
• Downloading PHP
• Windows zip package: If you plan to use PHP in conjunction with Apache on
Windows, you should download this distribution because it’s the focus of the later
installation instructions.
• Windows installer: This version offers a convenient Windows installer interface
for installing and configuring PHP, plus support for automatically configuring the
IIS, PWS, and Xitami servers.
6. PHP SYNTAX
• A PHP script is executed on the server, and the plain HTML result is sent
back to the browser.
• Basic PHP Syntax
• A PHP script can be placed anywhere in the document.
• A PHP script starts with <?php and ends with ?>:
• <?php
// PHP code goes here
?>
• The default file extension for PHP files is ".php".
• A PHP file normally contains HTML tags, and some PHP scripting code.
7. PHP FEATURES
• Practicality
• After all, Lerdorf’s original intention was not to design an entirely new
language, but to resolve a problem that had no readily available solution.
• For instance, a useful PHP script can consist of as little as one line; unlike C,
there is no need for the mandatory inclusion of libraries.
• For example, the following represents a complete PHP script, the purpose of
which is to output the current date, in this case one formatted like September
23, 2007: <?php echo date("F j, Y"); ?>
• PHP is a loosely typed language, meaning there is no need to explicitly create,
typecast, or destroy a variable, although you are not prevented from doing so.
• Power
• Create and manipulate Adobe Flash and Portable Document Format (PDF) files.
• Parse even the most complex of strings using the POSIX and Perl-based regular
expression libraries.
• Authenticate users against login credentials stored in flat files, databases, and
even Microsoft’s Active Directory.
• Communicate with a wide variety of protocols, including LDAP, IMAP, POP3,
NNTP, and DNS, among others.
8. Possibility
1. For example, consider PHP’s array of
database support options.
2. Native support is offered for more
than 25 database products, including
IBM DB2, mSQL, Microsoft SQL
Server, MySQL, Oracle, PostgreSQL,
Solid, Sybase, Unix dbm, and Velocis
3. PHP’s flexible string-parsing
capabilities offer users of differing skill
sets the opportunity to not only
immediately begin performing
complex string operations but also to
quickly port programs of similar
functionality (such as Perl and Python)
over to PHP
Price
1. PHP is available free of charge! Since its
inception, PHP has been without usage,
modification, and redistribution
restrictions.
2. Free of licensing restrictions imposed by
most commercial products:
3. Although some discrepancies do exist
among license variants, users are largely
free to modify, redistribute, and integrate
the software into other products.
4. Open development and auditing process
5. Because the source code is freely available
for anyone to examine, security holes and
potential problems are rapidly found and
fixed.
9. PHP VARIABLES
• Variables are "containers" for storing information.
• Creating (Declaring) PHP Variables
• In PHP, a variable starts with the $ sign, followed by the name of the
variable:
• Example
• <?php
$txt = "Hello world!";
$x = 5;
$y = 10.5;
?>
• Note: When you assign a text value to a variable, put quotes around the
value.
• Note: Unlike other programming languages, PHP has no command for
declaring a variable. It is created the moment you first assign a value to it.
• A variable can have a short name (like x and y) or a more descriptive name
(age, carname, total_volume).
• Rules for PHP variables:
• A variable starts with the $ sign, followed by the name of the variable
• A variable name must start with a letter or the underscore character
• A variable name cannot start with a number
• A variable name can only contain alpha-numeric characters and underscores
(A-z, 0-9, and _ )
• Variable names are case-sensitive ($age and $AGE are two different
variables)
10. • Output Variables
• The PHP echo statement is often used to output data to the screen. The following
example will show how to output text and a variable:
• Example
• <?php
$txt = "W3Schools.com";
echo "I love $txt!";
?>
• PHP is a Loosely Typed Language
• In the example above, notice that we did not have to tell PHP which data type the
variable is.PHP automatically converts the variable to the correct data type, depending
on its value.
• In other languages such as C, C++, and Java, the programmer must declare the name
and type of the variable before using it.
• PHP Variables Scope
• In PHP, variables can be declared anywhere in the script. The scope of a variable is
the part of the script where the variable can be referenced/used.
• PHP has three different variable scopes:
• local
• global
• static
11. EMBEDDING PHP CODE IN YOUR WEB PAGES
• One of PHP’s advantages is that you can embed PHP code directly alongside
HTML. For the code to do anything, the page must be passed to the PHP
engine for interpretation. But the web server doesn’t just pass every page;
rather, it passes only those pages identified by a specific file extension
(typically .php)
• Therefore, the engine needs some means to immediately determine which areas of
the page are PHP-enabled. This is logically accomplished by delimiting the PHP
code. There are four delimitation variants.
12. 1.Default Syntax
The default delimiter syntax opens with <?php and concludes with ?>, like this:
If you save this code as test.php and execute it from a PHP-enabled web server, you’ll
see the output shown in Figure.
2.Short-Tags
this syntax forgoes the php reference required in the default syntax. However, to use
this feature, you need to enable PHP’s short_open_tag directive. An example
follows:
<? print "This is another PHP example."; ?>
13. When short-tags syntax is enabled and you want to quickly escape to and
from PHP to output a bit of dynamic text, you can omit these statements
using an output variation known as short-circuit syntax:
<?="This is another PHP example.";?>
This is functionally equivalent to both of the following variations:
<? echo "This is another PHP example."; ?>
<?php echo "This is another PHP example.";?>
3.Script
Certain editors have historically had problems dealing with PHP’s more
commonly used escape syntax variants. Therefore, support for another mainstream
delimiter variant, <script>, is offered:
<script language="php">
print "This is another PHP example.";
</script>
4.ASP Style
Microsoft ASP pages employ a delimiting strategy similar to that used by PHP,
delimiting static from dynamic syntax by using a predefined character pattern:
opening dynamic syntax with <%, and concluding with %>.
<% print "This is another PHP example."; %>
14. Embedding Multiple Code Blocks
You can escape to and from PHP as many times as required within a given page. For
instance, the following example is perfectly acceptable:
As you can see, any variables declared in a prior code block are remembered for later
blocks, as is the case with the $date variable in this example.
Commenting Your Code
Whether for your own benefit or for that of somebody tasked with maintaining your
code, the importance of thoroughly commenting your code cannot be overstated.
PHP offers several syntactical variations.
15. Single-Line C++ Syntax
Comments often require no more than a single line. Because of its brevity,
there is no need to delimit the comment’s conclusion because the newline
(n) character fills this need quite nicely.
PHP supports C++ single-line comment syntax, which is prefaced with a
double slash (//), like this:
Shell Syntax
PHP also supports an alternative to the C++-style single-
line syntax, known as shell syntax, which is prefaced with
a hash mark (#).
<?php # Title: My first PHP script # Author: Jason
Gilmore
echo "This is a PHP program."; ?>
16. Multiple-Line C Syntax
PHP also offers a multiple-line variant that can open and close the comment on different
lines. Here’s an example:
<?php
/* Processes PayPal payments This script is responsible for processing the
customer's payment via PayPal. accepting the customer's credit card information
and billing address. Copyright 2010 W.J. Gilmore, LLC. */
?>
Outputting Data to the Browser
The print() Statement The print() statement outputs data passed to it . Its
prototype looks like this:
int print(argument)
All of the following are plausible print() statements:
<?php print("<p>I love the summertime.</p>"); ?>
<?php $season = "summertime"; print "<p>I love the $season.</p>"; ?>
<?php print "<p>I love the summertime.</p>"; ?>
All these statements produce identical output:
I love the summertime.
17. The echo() Statement
Alternatively, you could use the echo() statement for the same purposes as print().
echo()’s prototype looks like this:
void echo(string argument1 [, ...string argumentN])
To use echo(), just provide it with an argument just as was done with print():
echo "I love the summertime.";
Here’s an example:
The sprintf() Statement
The sprintf() statement is functionally identical to printf() except that the output is
assigned to a string rather than rendered to the browser. The prototype follows:
string sprintf(string format [, mixed arguments])
An example follows:
$cost = sprintf("$%.2f", 43.2); // $cost = $43.20