(PHP 5 >= 5.5.0, PHP 7) Return string describing error code

(PHP 5 >= 5.5.0, PHP 7) Reset all options of a libcurl session handle

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Gets cURL version information

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Perform a cURL session

(PHP 5 >= 5.5.0, PHP 7) Initialize a cURL share handle

(PHP 5 >= 5.5.0, PHP 7) URL encodes the given string

(PHP 5, PHP 7) Run the sub-connections of the current cURL handle

(PHP 5, PHP 7) Returns a new cURL multi handle

(PHP 5, PHP 7) Close a set of cURL handles void

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Initialize a cURL session