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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 |
---|---|
2131 | /** |
2132 | * Filter the comment form default arguments. |
2133 | * |
2134 | * Use 'comment_form_default_fields' to filter the comment fields. |
2135 | * |
2136 | * @since 3.0.0 |
2137 | * |
2138 | * @param array $defaults The default comment form arguments. |
2139 | */ |
2140 | $args = wp_parse_args( $args, apply_filters( 'comment_form_defaults', $defaults ) ); |
2141 |
|
2142 | // Ensure that the filtered args contain all required default values. |
2143 | $args = array_merge( $defaults, $args ); |
2144 |
|
2145 | if ( comments_open( $post_id ) ) : ?> |
2146 | <?php |
2147 | /** |
2148 | * Fires before the comment form. |
2149 | * |