wp-includes/shortcodes.php:664Combines user attributes with known attributes and fill in defaults when needed.
$pairsarray$attsarray$shortcodestringoptional''arrayOne hook fires while shortcode_atts() runs, in this order:
Filters shortcode attributes.
function shortcode_atts( $pairs, $atts, $shortcode = '' ) { $atts = (array) $atts; $out = array(); foreach ( $pairs as $name => $default ) { if ( array_key_exists( $name, $atts ) ) { $out[ $name ] = $atts[ $name ]; } else { $out[ $name ] = $default; } } if ( $shortcode ) { /** * Filters shortcode attributes. * * If the third parameter of the shortcode_atts() function is present then this filter is available. * The third parameter, $shortcode, is the name of the shortcode. * * @since 3.6.0 * @since 4.4.0 Added the `$shortcode` parameter. * * @param array $out The output array of shortcode attributes. * @param array $pairs The supported attributes and their defaults. * @param array $atts The user defined shortcode attributes. * @param string $shortcode The shortcode name. */ $out = apply_filters( "shortcode_atts_{$shortcode}", $out, $pairs, $atts, $shortcode ); } return $out;}Introduced in 2.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/shortcodes.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.