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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 |
---|---|
2401 |
|
2402 | /** |
2403 | * Filters the submit button for the comment form to display. |
2404 | * |
2405 | * @since 4.2.0 |
2406 | * |
2407 | * @param string $submit_button HTML markup for the submit button. |
2408 | * @param array $args Arguments passed to `comment_form()`. |
2409 | */ |
2410 | $submit_button = apply_filters( 'comment_form_submit_button', $submit_button, $args ); |
2411 |
|
2412 | $submit_field = sprintf( |
2413 | $args['submit_field'], |
2414 | $submit_button, |
2415 | get_comment_id_fields( $post_id ) |
2416 | ); |
2417 |
|
2418 | /** |
2419 | * Filters the submit field for the comment form to display. |