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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 |
|---|---|
| 394 | $default_sizes = get_intermediate_image_sizes(); |
| 395 | |
| 396 | if ( isset($backup_sizes['full-orig']) && is_array($backup_sizes['full-orig']) ) { |
| 397 | $data = $backup_sizes['full-orig']; |
| 398 | |
| 399 | if ( $parts['basename'] != $data['file'] ) { |
| 400 | if ( defined('IMAGE_EDIT_OVERWRITE') && IMAGE_EDIT_OVERWRITE ) { |
| 401 | // delete only if it's edited image |
| 402 | if ( preg_match('/-e[0-9]{13}\./', $parts['basename']) ) { |
| 403 | $delpath = apply_filters('wp_delete_file', $file); |
| 404 | @unlink($delpath); |
| 405 | } |
| 406 | } else { |
| 407 | $backup_sizes["full-$suffix"] = array('width' => $meta['width'], 'height' => $meta['height'], 'file' => $parts['basename']); |
| 408 | } |
| 409 | } |
| 410 | |
| 411 | $restored_file = path_join($parts['dirname'], $data['file']); |
| 412 | $restored = update_attached_file($post_id, $restored_file); |
| Line | Code |
| 419 | } |
| 420 | |
| 421 | foreach ( $default_sizes as $default_size ) { |
| 422 | if ( isset($backup_sizes["$default_size-orig"]) ) { |
| 423 | $data = $backup_sizes["$default_size-orig"]; |
| 424 | if ( isset($meta['sizes'][$default_size]) && $meta['sizes'][$default_size]['file'] != $data['file'] ) { |
| 425 | if ( defined('IMAGE_EDIT_OVERWRITE') && IMAGE_EDIT_OVERWRITE ) { |
| 426 | // delete only if it's edited image |
| 427 | if ( preg_match('/-e[0-9]{13}-/', $meta['sizes'][$default_size]['file']) ) { |
| 428 | $delpath = apply_filters( 'wp_delete_file', path_join($parts['dirname'], $meta['sizes'][$default_size]['file']) ); |
| 429 | @unlink($delpath); |
| 430 | } |
| 431 | } else { |
| 432 | $backup_sizes["$default_size-{$suffix}"] = $meta['sizes'][$default_size]; |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | $meta['sizes'][$default_size] = $data; |
| 437 | } else { |
| Line | Code |
| 610 | $return->thumbnail = path_join( dirname($file_url), $thumb['file'] ); |
| 611 | else |
| 612 | $return->thumbnail = "$file_url?w=128&h=128"; |
| 613 | } |
| 614 | } else { |
| 615 | $delete = true; |
| 616 | } |
| 617 | |
| 618 | if ( $delete ) { |
| 619 | $delpath = apply_filters('wp_delete_file', $new_path); |
| 620 | @unlink($delpath); |
| 621 | } |
| 622 | |
| 623 | imagedestroy($img); |
| 624 | |
| 625 | $return->msg = esc_js( __('Image saved') ); |
| 626 | return $return; |
| 627 | } |
| 628 | |