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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.
| Line | Code |
|---|---|
| 337 | * |
| 338 | * @since 3.5.0 |
| 339 | * |
| 340 | * @param bool|null $override Value to return instead of saving. Default null. |
| 341 | * @param string $filename Name of the file to be saved. |
| 342 | * @param WP_Image_Editor $image The image editor instance. |
| 343 | * @param string $mime_type The mime type of the image. |
| 344 | * @param int $post_id Attachment post ID. |
| 345 | */ |
| 346 | $saved = apply_filters( 'wp_save_image_editor_file', null, $filename, $image, $mime_type, $post_id ); |
| 347 | |
| 348 | if ( null !== $saved ) { |
| 349 | return $saved; |
| 350 | } |
| 351 | |
| 352 | return $image->save( $filename, $mime_type ); |
| 353 | } else { |
| 354 | /* translators: 1: $image, 2: WP_Image_Editor */ |
| 355 | _deprecated_argument( __FUNCTION__, '3.5.0', sprintf( __( '%1$s needs to be a %2$s object.' ), '$image', 'WP_Image_Editor' ) ); |