wp_kses_attr_check() │ WP 4.2.3

Determines whether an attribute is allowed.

Хуков нет.

Возвращает

true|false. Whether or not the attribute is allowed.

Использование

wp_kses_attr_check( $name, $value, $whole, $vless, $element, $allowed_html );

$name(строка) (обязательный) (передается по ссылке — &)

The attribute name. Passed by reference. Returns empty string when not allowed.

$value(строка) (обязательный) (передается по ссылке — &)

The attribute value. Passed by reference. Returns a filtered value.

$whole(строка) (обязательный) (передается по ссылке — &)

The name=value input. Passed by reference. Returns filtered input.

$vless(строка) (обязательный)

Whether the attribute is valueless. Use 'y' or 'n'.

$element(строка) (обязательный)

The name of the element to which this attribute belongs.

$allowed_html(массив) (обязательный)

The full list of allowed elements and attributes.

Список изменений

Код wp_kses_attr_check() wp kses attr check ^{WP 6.8}

function wp_kses_attr_check( &$name, &$value, &$whole, $vless, $element, $allowed_html ) {
	$name_low    = strtolower( $name );
	$element_low = strtolower( $element );

	if ( ! isset( $allowed_html[ $element_low ] ) ) {
		$name  = '';
		$value = '';
		$whole = '';
		return false;
	}

	$allowed_attr = $allowed_html[ $element_low ];

	if ( ! isset( $allowed_attr[ $name_low ] ) || '' === $allowed_attr[ $name_low ] ) {
		/*
		 * Allow `data-*` attributes.
		 *
		 * When specifying `$allowed_html`, the attribute name should be set as
		 * `data-*` (not to be mixed with the HTML 4.0 `data` attribute, see
		 * https://www.w3.org/TR/html40/struct/objects.html#adef-data).
		 *
		 * Note: the attribute name should only contain `A-Za-z0-9_-` chars.
		 */
		if ( str_starts_with( $name_low, 'data-' ) && ! empty( $allowed_attr['data-*'] )
			&& preg_match( '/^data-[a-z0-9_-]+$/', $name_low, $match )
		) {
			/*
			 * Add the whole attribute name to the allowed attributes and set any restrictions
			 * for the `data-*` attribute values for the current element.
			 */
			$allowed_attr[ $match[0] ] = $allowed_attr['data-*'];
		} else {
			$name  = '';
			$value = '';
			$whole = '';
			return false;
		}
	}

	if ( 'style' === $name_low ) {
		$new_value = safecss_filter_attr( $value );

		if ( empty( $new_value ) ) {
			$name  = '';
			$value = '';
			$whole = '';
			return false;
		}

		$whole = str_replace( $value, $new_value, $whole );
		$value = $new_value;
	}

	if ( is_array( $allowed_attr[ $name_low ] ) ) {
		// There are some checks.
		foreach ( $allowed_attr[ $name_low ] as $currkey => $currval ) {
			if ( ! wp_kses_check_attr_val( $value, $vless, $currkey, $currval ) ) {
				$name  = '';
				$value = '';
				$whole = '';
				return false;
			}
		}
	}

	return true;
}