3v4l.org

run code in 300+ PHP versions simultaneously
<?php $requiredFields = ['name', 'age', 'hair_colour']; // Note: $errorArray is not initialised foreach ( $requiredFields as $field ) { if ( ! isset($_POST[$field]) ) { $errorArray[] = "Missing required field '$field'. "; } } echo implode('', $errorArray);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Missing required field 'name'. Missing required field 'age'. Missing required field 'hair_colour'.
preferences:
133.68 ms | 402 KiB | 121 Q