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@ 2014-09-23T18:53:55Z

<?php

$keys = array(1,2,3);

function foo($key) {

             return sprintf(':%s', $key);
        }

$placeholders = array_map('foo', $keys);

Output
Performance
VLD
References
Branches

array_map: documentation ( source)
sprintf: documentation ( source)

preferences:dark modelive preview

36.61 ms | 402 KiB | 5 Q