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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 |
|---|---|
| 2043 | * |
| 2044 | * The dynamic portion of the hook name, `$field`, refers to the post |
| 2045 | * field name. |
| 2046 | * |
| 2047 | * @since 2.3.0 |
| 2048 | * |
| 2049 | * @param mixed $value Value of the post field. |
| 2050 | * @param int $post_id Post ID. |
| 2051 | */ |
| 2052 | $value = apply_filters( "edit_{$field}", $value, $post_id ); |
| 2053 | |
| 2054 | /** |
| 2055 | * Filter the value of a specific post field to edit. |
| 2056 | * |
| 2057 | * The dynamic portion of the hook name, `$field_no_prefix`, refers to |
| 2058 | * the post field name. |
| 2059 | * |
| 2060 | * @since 2.3.0 |
| 2061 | * |