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wp_kses_bad_protocol ›

Since1.0.0
Deprecatedn/a
wp_kses_bad_protocol ( $string, $allowed_protocols )
Parameters: (2)
  • (string) $string Content to filter bad protocols from.
    Required: Yes
  • (string[]) $allowed_protocols Array of allowed URL protocols.
    Required: Yes
Returns:
  • (string) Filtered content.
Defined at:
Codex:

Sanitizes a string and removed disallowed URL protocols.

This function removes all non-allowed protocols from the beginning of the string. It ignores whitespace and the case of the letters, and it does understand HTML entities. It does its work recursively, so it won't be fooled by a string like javascript:javascript:alert(57).



Source

function wp_kses_bad_protocol( $string, $allowed_protocols ) {
	$string     = wp_kses_no_null( $string );
	$iterations = 0;

	do {
		$original_string = $string;
		$string          = wp_kses_bad_protocol_once( $string, $allowed_protocols );
	} while ( $original_string != $string && ++$iterations < 6 );

	if ( $original_string != $string ) {
		return '';
	}

	return $string;
}