Edit File: callback.php
<?php if ( ! defined( 'ABSPATH' ) ) { die; } // Cannot access directly. /** * * Field: callback * * @since 1.0.0 * @version 1.0.0 * */ if ( ! class_exists( 'CSF_Field_callback' ) ) { class CSF_Field_callback extends CSF_Fields { public function __construct( $field, $value = '', $unique = '', $where = '', $parent = '' ) { parent::__construct( $field, $value, $unique, $where, $parent ); } public function render() { if ( isset( $this->field['function'] ) && is_callable( $this->field['function'] ) ) { $args = ( isset( $this->field['args'] ) ) ? $this->field['args'] : null; call_user_func( $this->field['function'], $args ); } } } }