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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 |
|---|---|
| 18 | * @param mixed $file Filename of the original image, Or attachment id. |
| 19 | * @param int $max_side Maximum length of a single side for the thumbnail. |
| 20 | * @param mixed $deprecated Never used. |
| 21 | * @return string Thumbnail path on success, Error string on failure. |
| 22 | */ |
| 23 | function wp_create_thumbnail( $file, $max_side, $deprecated = '' ) { |
| 24 | if ( !empty( $deprecated ) ) |
| 25 | _deprecated_argument( __FUNCTION__, '1.2' ); |
| 26 | $thumbpath = image_resize( $file, $max_side, $max_side ); |
| 27 | return apply_filters( 'wp_create_thumbnail', $thumbpath ); |
| 28 | } |
| 29 | |
| 30 | /** |
| 31 | * Crop an Image to a given size. |
| 32 | * |
| 33 | * @since 2.1.0 |
| 34 | * |
| 35 | * @param string|int $src The source file or Attachment ID. |
| 36 | * @param int $src_x The start x position to crop from. |