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@ 2016-02-19T09:58:51Z

<?php

$a = ['a' => 1, 'b' => 2];
$b = "&";
$b .= array_walk($a, function($v, $k) {
    return ( '&'.$k.'='.'$v');
});

print_r($b);

Output
Performance
VLD
References
Branches

print_r: documentation ( source)
array_walk: documentation ( source)

preferences:dark modelive preview

57.19 ms | 402 KiB | 5 Q