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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 |
|---|---|
| 636 | * |
| 637 | * The filter is evaluated for all image sizes except 'full'. |
| 638 | * |
| 639 | * @since 3.1.0 |
| 640 | * |
| 641 | * @param string $path Path to the current image. |
| 642 | * @param string $attachment_id Attachment ID. |
| 643 | * @param string $size Size of the image. |
| 644 | */ |
| 645 | $filepath = apply_filters( 'load_image_to_edit_filesystempath', path_join( dirname( $filepath ), $data['file'] ), $attachment_id, $size ); |
| 646 | } |
| 647 | } elseif ( function_exists( 'fopen' ) && true == ini_get( 'allow_url_fopen' ) ) { |
| 648 | /** |
| 649 | * Filters the image URL if not in the local filesystem. |
| 650 | * |
| 651 | * The filter is only evaluated if fopen is enabled on the server. |
| 652 | * |
| 653 | * @since 3.1.0 |
| 654 | * |