wp_kses_hair_parse( string $attr )
Builds an attribute list from string containing attributes.
Description
Does not modify input. May return "evil" output. In case of unexpected input, returns false instead of stripping things.
Based on wp_kses_hair() but does not return a multi-dimensional array.
Parameters
- $attr
-
(Required) Attribute list from HTML element to closing HTML element tag
Return
(array|bool) List of attributes found in $attr. Returns false on failure.
Source
File: wp-includes/kses.php
function wp_kses_hair_parse( $attr ) {
if ( '' === $attr ) {
return array();
}
$regex =
'(?:'
. '[-a-zA-Z:]+' // Attribute name.
. '|'
. '\[\[?[^\[\]]+\]\]?' // Shortcode in the name position implies unfiltered_html.
. ')'
. '(?:' // Attribute value.
. '\s*=\s*' // All values begin with '='
. '(?:'
. '"[^"]*"' // Double-quoted
. '|'
. "'[^']*'" // Single-quoted
. '|'
. '[^\s"\']+' // Non-quoted
. '(?:\s|$)' // Must have a space
. ')'
. '|'
. '(?:\s|$)' // If attribute has no value, space is required.
. ')'
. '\s*'; // Trailing space is optional except as mentioned above.
// Although it is possible to reduce this procedure to a single regexp,
// we must run that regexp twice to get exactly the expected result.
$validation = "%^($regex)+$%";
$extraction = "%$regex%";
if ( 1 === preg_match( $validation, $attr ) ) {
preg_match_all( $extraction, $attr, $attrarr );
return $attrarr[0];
} else {
return false;
}
}
Changelog
| Version | Description |
|---|---|
| WP-4.2.3 | Introduced. |