wp_check_jsonp_callback

函数



      wp_check_jsonp_callback ( $callback )

参数

(string)
$callback
Supplied JSONP callback function name.
Required: 是

返回值

(bool) Whether the callback function name is valid.

定义位置

wp-includes/functions.php
, line 4505

引入: 4.6.0

弃用: –

Checks that a JSONP callback is a valid JavaScript callback name.

Only allows alphanumeric characters and the dot character in callback
function names. This helps to mitigate XSS attacks caused by directly
outputting user input.

function wp_check_jsonp_callback( $callback ) {
	if ( ! is_string( $callback ) ) {
		return false;
	}

	preg_replace( '/[^w.]/', '', $callback, -1, $illegal_char_count );

	return 0 === $illegal_char_count;
}

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