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wp_kses_bad_protocol_once › WordPress Function

Since1.0.0
Deprecatedn/a
› wp_kses_bad_protocol_once ( $string, $allowed_protocols, $count = 1 )
Parameters: (3)
  • (string) $string Content to check for bad protocols.
    Required: Yes
  • (string[]) $allowed_protocols Array of allowed URL protocols.
    Required: Yes
  • (int) $count Depth of call recursion to this function.
    Required: No
    Default: 1
Returns:
  • (string) Sanitized content.
Defined at:
Codex:

Sanitizes content from bad protocols and other characters.

This function searches for URL protocols at the beginning of the string, while handling whitespace and HTML entities.


Related Functions: wp_kses_bad_protocol, wp_kses_post_deep, wp_allowed_protocols, wp_refresh_post_nonces, wp_kses_attr_check

Source 

function wp_kses_bad_protocol_once( $string, $allowed_protocols, $count = 1 ) {
	$string  = preg_replace( '/(&#0*58(?![;0-9])|&#x0*3a(?![;a-f0-9]))/i', '$1;', $string );
	$string2 = preg_split( '/:|&#0*58;|&#x0*3a;|:/i', $string, 2 );
	if ( isset( $string2[1] ) && ! preg_match( '%/\?%', $string2[0] ) ) {
		$string   = trim( $string2[1] );
		$protocol = wp_kses_bad_protocol_once2( $string2[0], $allowed_protocols );
		if ( 'feed:' === $protocol ) {
			if ( $count > 2 ) {
				return '';
			}
			$string = wp_kses_bad_protocol_once( $string, $allowed_protocols, ++$count );
			if ( empty( $string ) ) {
				return $string;
			}
		}
		$string = $protocol . $string;
	}

	return $string;
}