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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 |
|---|---|
| 1219 | * The filter is only evaluated if the file isn't stored locally and `allow_url_fopen` is enabled on the server. |
| 1220 | * |
| 1221 | * @since 3.1.0 |
| 1222 | * |
| 1223 | * @param string|false $image_url Current image URL. |
| 1224 | * @param int $attachment_id Attachment ID. |
| 1225 | * @param string|int[] $size Requested image size. Can be any registered image size name, or |
| 1226 | * an array of width and height values in pixels (in that order). |
| 1227 | */ |
| 1228 | $filepath = apply_filters( 'load_image_to_edit_attachmenturl', wp_get_attachment_url( $attachment_id ), $attachment_id, $size ); |
| 1229 | } |
| 1230 | |
| 1231 | /** |
| 1232 | * Filters the returned path or URL of the current image. |
| 1233 | * |
| 1234 | * @since 2.9.0 |
| 1235 | * |
| 1236 | * @param string|false $filepath File path or URL to current image, or false. |
| 1237 | * @param int $attachment_id Attachment ID. |