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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 2 times in this file.
| Line | Code |
|---|---|
| 385 | break; |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | return $img; |
| 390 | } |
| 391 | |
| 392 | function stream_preview_image($post_id) { |
| 393 | $post = get_post($post_id); |
| 394 | @ini_set( 'memory_limit', apply_filters( 'admin_memory_limit', WP_MAX_MEMORY_LIMIT ) ); |
| 395 | $img = load_image_to_edit( $post_id, $post->post_mime_type, array(400, 400) ); |
| 396 | |
| 397 | if ( !is_resource($img) ) |
| 398 | return false; |
| 399 | |
| 400 | $changes = !empty($_REQUEST['history']) ? json_decode( stripslashes($_REQUEST['history']) ) : null; |
| 401 | if ( $changes ) |
| 402 | $img = image_edit_apply_changes($img, $changes); |
| 403 | |
| Line | Code |
| 490 | $msg->msg = __('Image restored successfully.'); |
| 491 | |
| 492 | return $msg; |
| 493 | } |
| 494 | |
| 495 | function wp_save_image($post_id) { |
| 496 | $return = new stdClass; |
| 497 | $success = $delete = $scaled = $nocrop = false; |
| 498 | $post = get_post($post_id); |
| 499 | @ini_set( 'memory_limit', apply_filters( 'admin_memory_limit', WP_MAX_MEMORY_LIMIT ) ); |
| 500 | $img = load_image_to_edit($post_id, $post->post_mime_type); |
| 501 | |
| 502 | if ( !is_resource($img) ) { |
| 503 | $return->error = esc_js( __('Unable to create new image.') ); |
| 504 | return $return; |
| 505 | } |
| 506 | |
| 507 | $fwidth = !empty($_REQUEST['fwidth']) ? intval($_REQUEST['fwidth']) : 0; |
| 508 | $fheight = !empty($_REQUEST['fheight']) ? intval($_REQUEST['fheight']) : 0; |