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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 |
|---|---|
| 2946 | * - `parent_edit_pre` |
| 2947 | * - `type_edit_pre` |
| 2948 | * - `mime_type_edit_pre` |
| 2949 | * |
| 2950 | * @since 2.3.0 |
| 2951 | * |
| 2952 | * @param mixed $value Value of the post field. |
| 2953 | * @param int $post_id Post ID. |
| 2954 | */ |
| 2955 | $value = apply_filters( "{$field_no_prefix}_edit_pre", $value, $post_id ); |
| 2956 | } else { |
| 2957 | /** |
| 2958 | * Filters the value of a specific post field to edit. |
| 2959 | * |
| 2960 | * Only applied to post fields not prefixed with `post_`. |
| 2961 | * |
| 2962 | * The dynamic portion of the hook name, `$field`, refers to the |
| 2963 | * post field name. Possible filter names include: |
| 2964 | * |