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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 |
---|---|
2417 |
|
2418 | /** |
2419 | * Filters the submit button for the comment form to display. |
2420 | * |
2421 | * @since 4.2.0 |
2422 | * |
2423 | * @param string $submit_button HTML markup for the submit button. |
2424 | * @param array $args Arguments passed to `comment_form()`. |
2425 | */ |
2426 | $submit_button = apply_filters( 'comment_form_submit_button', $submit_button, $args ); |
2427 |
|
2428 | $submit_field = sprintf( |
2429 | $args['submit_field'], |
2430 | $submit_button, |
2431 | get_comment_id_fields( $post_id ) |
2432 | ); |
2433 |
|
2434 | /** |
2435 | * Filters the submit field for the comment form to display. |