Filter hook 'post_gallery'

Hook Information

Hook Parameters

Usage Examples

<?php
// Hook into post_gallery
add_filter('post_gallery', 'my_custom_filter', 10, 3);

function my_custom_filter($output, $attr, $instance) {
    // Your custom filtering logic here
    return $output;
}

Source Code Context

<?php
2709  	 *
2710  	 * @param string $output   The gallery output. Default empty.
2711  	 * @param array  $attr     Attributes of the gallery shortcode.
2712  	 * @param int    $instance Unique numeric ID of this gallery shortcode instance.
2713  	 */
2714  	$output = apply_filters( 'post_gallery', '', $attr, $instance );
2715  
2716  	if ( ! empty( $output ) ) {
2717  		return $output;
2718  	}
2719  

PHP Documentation

<?php
/**
	 * Filters the default gallery shortcode output.
	 *
	 * If the filtered output isn't empty, it will be used instead of generating
	 * the default gallery template.
	 *
	 * @since 2.5.0
	 * @since 4.2.0 The `$instance` parameter was added.
	 *
	 * @see gallery_shortcode()
	 *
	 * @param string $output   The gallery output. Default empty.
	 * @param array  $attr     Attributes of the gallery shortcode.
	 * @param int    $instance Unique numeric ID of this gallery shortcode instance.
	 */