3v4l.org

run code in 300+ PHP versions simultaneously
<?php $n = new stdClass(); $n->dog = array(); $n->dog['und'][0]['value'] = '12345'; $d = 'dog'; echo $n->$d['und'][0]['value'];
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
12345
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Warning: Illegal string offset 'und' in /in/jUjXn on line 7 Warning: Illegal string offset 'value' in /in/jUjXn on line 7 Notice: Undefined property: stdClass::$d in /in/jUjXn on line 7
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Fatal error: Cannot use string offset as an array in /in/jUjXn on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
Notice: Undefined property: in /in/jUjXn on line 7
preferences:
208.21 ms | 402 KiB | 370 Q