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run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array(0,null,3,null); foreach ($array as &$row) { if ($row == null) unset($row); } var_dump($arr);
Output for 5.5.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined variable: array in /in/Wjo2W on line 4 Warning: Invalid argument supplied for foreach() in /in/Wjo2W on line 4 array(4) { [0]=> int(0) [1]=> NULL [2]=> int(3) [3]=> NULL }
Output for hhvm-3.10.0 - 3.12.0
array(4) { [0]=> int(0) [1]=> NULL [2]=> int(3) [3]=> NULL }
Output for 5.2.3 - 5.4.45
Warning: Invalid argument supplied for foreach() in /in/Wjo2W on line 4 array(4) { [0]=> int(0) [1]=> NULL [2]=> int(3) [3]=> NULL }
Output for 5.0.0 - 5.2.2
<br /> <b>Warning</b>: Invalid argument supplied for foreach() in <b>/in/Wjo2W</b> on line <b>4</b><br /> array(4) { [0]=> int(0) [1]=> NULL [2]=> int(3) [3]=> NULL }
Output for 4.4.2 - 4.4.9
<br /> <b>Parse error</b>: syntax error, unexpected '&', expecting T_VARIABLE or '$' in <b>/in/Wjo2W</b> on line <b>4</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
<br /> <b>Parse error</b>: parse error, unexpected '&', expecting T_VARIABLE or '$' in <b>/in/Wjo2W</b> on line <b>4</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br /> <b>Parse error</b>: parse error, expecting `T_VARIABLE' or `'$'' in <b>/in/Wjo2W</b> on line <b>4</b><br />
Process exited with code 255.