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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 |
|---|---|
| 256 | return $destfilename; |
| 257 | } |
| 258 | |
| 259 | // resize an image to make a thumbnail or intermediate size, and return metadata describing the new copy |
| 260 | // returns false if no image was created |
| 261 | function image_make_intermediate_size($file, $width, $height, $crop=false) { |
| 262 | if ( $width || $height ) { |
| 263 | $resized_file = image_resize($file, $width, $height, $crop); |
| 264 | if ( !is_wp_error($resized_file) && $resized_file && $info = getimagesize($resized_file) ) { |
| 265 | $resized_file = apply_filters('image_make_intermediate_size', $resized_file); |
| 266 | return array( |
| 267 | 'file' => basename( $resized_file ), |
| 268 | 'width' => $info[0], |
| 269 | 'height' => $info[1], |
| 270 | ); |
| 271 | } |
| 272 | } |
| 273 | return false; |
| 274 | } |