The document discusses the WordPress HTTP API and its helper functions for making HTTP requests. It explains that the WP HTTP API provides a powerful interface for making remote calls using functions like wp_remote_get(), wp_remote_post(), and wp_remote_request(). These functions return responses that can be parsed to retrieve things like the body, headers, response code, and response message. Additional resources for using the API are also provided.

1. WP HTTP API Eunus Hosen!
Co-Founder & CTO!
DevsTeam

2. What is HTTP API

3. Why HTTP API
❖ cURL : A library to communicate with remote hosts. Works only
when the cURL extension is loaded into PHP.!
❖ File system (fopen, file_get_contents) : This function opens up a file
or an URL and this works when php ini_settings allows for this.!
❖ Sockets (fsockopen) : Initiates a socket connection to the resource
specified by host-name. Again it’s possible that the hosting company
might have disabled the fsockopen function.!
❖ Streams: Works on PHP 4.3 or later.!
❖ HTTP: Provides a powerful request and parallel interface for remote
calls. It needs PHP 5.2+

4. WP_HTTP Class

5. Helper Functions
❖ wp_remote_get() - Retrieves a URL using the GET HTTP
method.!
❖ wp_remote_post() - Retrieves a URL using the POST HTTP
method.!
❖ wp_remote_head() - Retrieves a URL using the HEAD
HTTP method.!
❖ wp_remote_request() - Retrieves a URL using either the
default GET or a custom HTTP method (should be caps)
that you specify.

6. An Example

7. Response

8. Retrieve Body: wp_remote_retrieve_body($response)

9. Retrieve Body: wp_remote_retrieve_headers($response)

10. More Helper Functions
❖ wp_remote_retrieve_body() - Retrieves just the body from the response.!
❖ wp_remote_retrieve_header() - Gives you a single HTTP header based
on name from the response.!
❖ wp_remote_retrieve_headers() - Returns all of the HTTP headers in an
array for processing.!
❖ wp_remote_retrieve_response_code() - Gives you the number for the
HTTP response. This should be 200, but could be 4xx or even 3xx on
failure.!
❖ wp_remote_retrieve_response_message() - Returns the response
message based on the response code

11. Resources
❖ wp_remote_get: http://codex.wordpress.org/Function_Reference/wp_remote_get!
❖ wp_remote_post: http://codex.wordpress.org/Function_Reference/wp_remote_post!
❖ wp_remote_head: http://codex.wordpress.org/Function_Reference/wp_remote_head!
❖ wp_remote_retrieve_body : http://codex.wordpress.org/Function_Reference/
wp_remote_retrieve_body!
❖ wp_remote_retrieve_headers : http://codex.wordpress.org/Function_Reference/
wp_remote_retrieve_headers!
❖ wp_remote_retrieve_header: http://codex.wordpress.org/Function_Reference/
wp_remote_retrieve_header!
❖ wp_remote_retrieve_response_code : http://codex.wordpress.org/Function_Reference/
wp_remote_retrieve_response_code!
❖ wp_remote_retrieve_response_message : http://codex.wordpress.org/Function_Reference/
wp_remote_retrieve_response_message

12. Got a Question?

13. Thank you!