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run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(); $a[] = 1; $a[] = 2; $a[] = 3; unset($a[1]); usort($a); var_dump($a);
Output for 5.3.0 - 7.1.0
Warning: usort() expects exactly 2 parameters, 1 given in /in/Co3h5 on line 7 array(2) { [0]=> int(1) [2]=> int(3) }
Output for 5.2.3 - 5.2.17
Warning: Wrong parameter count for usort() in /in/Co3h5 on line 7 array(2) { [0]=> int(1) [2]=> int(3) }
Output for 4.3.0 - 5.2.2
<br /> <b>Warning</b>: Wrong parameter count for usort() in <b>/in/Co3h5</b> on line <b>7</b><br /> array(2) { [0]=> int(1) [2]=> int(3) }