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wp_kses_hair_parse › WordPress Function

Since4.2.3
Deprecatedn/a
› wp_kses_hair_parse ( $attr )
Parameters:
  • (string) $attr Attribute list from HTML element to closing HTML element tag.
    Required: Yes
Returns:
  • (array|false) List of attributes found in $attr. Returns false on failure.
Defined at:
Codex:

Builds an attribute list from string containing attributes.

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.


Related Functions: wp_kses_attr_parse, wp_kses_hair, wp_kses_attr, wp_kses_data, wp_kses_attr_check

Source 

function wp_kses_hair_parse( $attr ) {
	if ( '' === $attr ) {
		return array();
	}

	$regex =
		'(?:
				[_a-zA-Z][-_a-zA-Z0-9:.]* # 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.
	 *
	 * Note: do NOT remove the `x` modifiers as they are essential for the above regex!
	 */

	$validation = "/^($regex)+$/x";
	$extraction = "/$regex/x";

	if ( 1 === preg_match( $validation, $attr ) ) {
		preg_match_all( $extraction, $attr, $attrarr );
		return $attrarr[0];
	} else {
		return false;
	}
}