How to use PHP's http_build_query() function

(1) Function

The role of the http_build_query() function is to use the given array of associations (or subscripts) to generate a URL-encoded request string.

 

(2) Grammar

写法格式：http_build_query ( mixed $query_data [, string $numeric_prefix [, string $arg_separator [, int $enc_type = PHP_QUERY_RFC1738 ]]] )

 

(3) Cases

For example:

<?php
	$user = array('name' => 'Tony', 'age' => 23);
	$userInfo = http_build_query($user);
	echo $userInfo;
?>

Our output can get: name=Tony&age=23

 

(4) Scene

What's the use of this, this is to simulate an http request, and pass the obtained data through the function URL-encode, which is generally used in callbacks.