The comment_form WordPress PHP action fires at the bottom of the comment form, inside the closing form tag.
Usage
add_action('comment_form', 'your_custom_function_name');
function your_custom_function_name($post_id) {
// your custom code here
}
Parameters
- $post_id (int): The post ID.
More information
See WordPress Developer Resources: comment_form
Examples
Add a Custom Field to the Comment Form
This example adds a custom field “Favorite Color” to the comment form.
add_action('comment_form', 'add_favorite_color_field');
function add_favorite_color_field($post_id) {
echo '<p class="comment-form-color"><label for="color">' . __('Favorite Color') . '</label><input id="color" name="color" type="text" /></p>';
}
Add a Checkbox to Agree to the Terms and Conditions
This example adds a checkbox for users to agree to terms and conditions before submitting a comment.
add_action('comment_form', 'add_terms_and_conditions_checkbox');
function add_terms_and_conditions_checkbox($post_id) {
echo '<p class="comment-form-tac"><input id="tac" name="tac" type="checkbox" /><label for="tac">' . __('I agree to the Terms and Conditions') . '</label></p>';
}