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@ 2014-10-24T05:45:47Z

<?php
$num = 2;
$array = array(1,2,3,4,5,6,7);
foreach($array as $key) {
	if($key === $num) var_dump(key(prev($array)));
	break;	
}

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
prev: documentation ( source)
key: documentation ( source)

preferences:dark modelive preview

35.13 ms | 402 KiB | 5 Q