Filter hook 'wp_create_thumbnail'

Hook Information

Hook Parameters

Usage Examples

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

function my_custom_filter($file, $max_side, $deprecated) {
    // Your custom filtering logic here
    return $file;
}

Source Code Context

<?php
1132   * @param mixed $deprecated Never used.
1133   * @return string Thumbnail path on success, Error string on failure.
1134   */
1135  function wp_create_thumbnail( $file, $max_side, $deprecated = '' ) {
1136  	_deprecated_function( __FUNCTION__, '3.5.0', 'image_resize()' );
1137  	return apply_filters( 'wp_create_thumbnail', image_resize( $file, $max_side, $max_side ) );
1138  }
1139  
1140  /**
1141   * This was once used to display a meta box for the nav menu theme locations.
1142   *

PHP Documentation

<?php
/**
 * This was once used to create a thumbnail from an Image given a maximum side size.
 *
 * @since 1.2.0
 * @deprecated 3.5.0 Use image_resize()
 * @see image_resize()
 *
 * @param mixed $file Filename of the original image, Or attachment ID.
 * @param int $max_side Maximum length of a single side for the thumbnail.
 * @param mixed $deprecated Never used.
 * @return string Thumbnail path on success, Error string on failure.
 */