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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 |
|---|---|
| 2592 | * Filters a comment form field for display. |
| 2593 | * |
| 2594 | * The dynamic portion of the filter hook, `$name`, refers to the name |
| 2595 | * of the comment form field. Such as 'author', 'email', or 'url'. |
| 2596 | * |
| 2597 | * @since 3.0.0 |
| 2598 | * |
| 2599 | * @param string $field The HTML-formatted output of the comment form field. |
| 2600 | */ |
| 2601 | echo apply_filters( "comment_form_field_{$name}", $field ) . "\n"; |
| 2602 | |
| 2603 | if ( $last_field === $name ) { |
| 2604 | /** |
| 2605 | * Fires after the comment fields in the comment form, excluding the textarea. |
| 2606 | * |
| 2607 | * @since 3.0.0 |
| 2608 | */ |
| 2609 | do_action( 'comment_form_after_fields' ); |
| 2610 | } |