3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php add_filter( 'gform_field_validation', 'validate_phone', 10, 4 ); function validate_phone( $result, $value, $form, $field ) { $pattern = "/^(\+44\s?7\d{3}|\(?07\d{3}\)|\(?01\d{3}\)?)\s?\d{3}\s?\d{3}$/"; if ( $field->type == 'phone' && $this->phoneFormat != 'standard' && ! preg_match( $pattern, $value ) ) { $result['is_valid'] = false; $result['message'] = 'Please enter a valid phone number'; } return $result; }
Output for 7.0.0 - 7.3.0rc4
Fatal error: Uncaught Error: Call to undefined function add_filter() in /in/maDcH:3 Stack trace: #0 {main} thrown in /in/maDcH on line 3
Process exited with code 255.
Output for 5.3.20 - 5.6.28
Fatal error: Call to undefined function add_filter() in /in/maDcH on line 3
Process exited with code 255.