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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 3 times in this file.
| Line | Code |
|---|---|
| 434 | $default_sizes = get_intermediate_image_sizes(); |
| 435 | |
| 436 | if ( isset($backup_sizes['full-orig']) && is_array($backup_sizes['full-orig']) ) { |
| 437 | $data = $backup_sizes['full-orig']; |
| 438 | |
| 439 | if ( $parts['basename'] != $data['file'] ) { |
| 440 | if ( defined('IMAGE_EDIT_OVERWRITE') && IMAGE_EDIT_OVERWRITE ) { |
| 441 | // delete only if it's edited image |
| 442 | if ( preg_match('/-e[0-9]{13}\./', $parts['basename']) ) { |
| 443 | $delpath = apply_filters('wp_delete_file', $file); |
| 444 | @unlink($delpath); |
| 445 | } |
| 446 | } else { |
| 447 | $backup_sizes["full-$suffix"] = array('width' => $meta['width'], 'height' => $meta['height'], 'file' => $parts['basename']); |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | $restored_file = path_join($parts['dirname'], $data['file']); |
| 452 | $restored = update_attached_file($post_id, $restored_file); |
| Line | Code |
| 459 | } |
| 460 | |
| 461 | foreach ( $default_sizes as $default_size ) { |
| 462 | if ( isset($backup_sizes["$default_size-orig"]) ) { |
| 463 | $data = $backup_sizes["$default_size-orig"]; |
| 464 | if ( isset($meta['sizes'][$default_size]) && $meta['sizes'][$default_size]['file'] != $data['file'] ) { |
| 465 | if ( defined('IMAGE_EDIT_OVERWRITE') && IMAGE_EDIT_OVERWRITE ) { |
| 466 | // delete only if it's edited image |
| 467 | if ( preg_match('/-e[0-9]{13}-/', $meta['sizes'][$default_size]['file']) ) { |
| 468 | $delpath = apply_filters( 'wp_delete_file', path_join($parts['dirname'], $meta['sizes'][$default_size]['file']) ); |
| 469 | @unlink($delpath); |
| 470 | } |
| 471 | } else { |
| 472 | $backup_sizes["$default_size-{$suffix}"] = $meta['sizes'][$default_size]; |
| 473 | } |
| 474 | } |
| 475 | |
| 476 | $meta['sizes'][$default_size] = $data; |
| 477 | } else { |
| Line | Code |
| 650 | $return->thumbnail = path_join( dirname($file_url), $thumb['file'] ); |
| 651 | else |
| 652 | $return->thumbnail = "$file_url?w=128&h=128"; |
| 653 | } |
| 654 | } else { |
| 655 | $delete = true; |
| 656 | } |
| 657 | |
| 658 | if ( $delete ) { |
| 659 | $delpath = apply_filters('wp_delete_file', $new_path); |
| 660 | @unlink($delpath); |
| 661 | } |
| 662 | |
| 663 | imagedestroy($img); |
| 664 | |
| 665 | $return->msg = esc_js( __('Image saved') ); |
| 666 | return $return; |
| 667 | } |
| 668 | |