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run code in 300+ PHP versions simultaneously
<?php $arr = array(null => "yup, null"); foreach($arr as $key => $value) { var_dump($key); var_dump($value); }
Output for 8.5.0 - 8.5.3
Deprecated: Using null as an array offset is deprecated, use an empty string instead in /in/Tnghp on line 2 string(0) "" string(9) "yup, null"
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.25, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18
string(0) "" string(9) "yup, null"
preferences:
96.86 ms | 1661 KiB | 4 Q