Comment Phone Wordpress

comment-phone.php

<?php
/*
Plugin Name: Comment IP
Author: Ahmad Saugi
*/

add_action('plugin_init', 'ip_init');
function ip_init() {
}

function custom_extra_comment_field($field){
    $field['comment_field'] .= '<label for="phone">Phone</label>
    <input type="phone" id="phone" name="phone" placeholder="Your phone number">';
    return $field;
}
add_filter('comment_form_defaults', 'custom_extra_comment_field');

function save_comment($comment) {
    echo $_POST['phone'];
    add_comment_meta($comment, 'phone', $_POST['phone']);
}
add_action('comment_post', 'save_comment');


add_action('manage_edit-comments_columns', 'edit_comments_columns');
function edit_comments_columns($cols) {
    $cols['phone'] = 'Phone Number';
    return $cols;
}
add_action('manage_comments_custom_column', 'display_comment_phone', 10, 2);
function display_comment_phone($col, $comment_id) {
    if($col == 'phone') {
        echo get_comment_meta($comment_id, 'phone', true);
    }
}
?>