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@ 2014-10-01T14:44:01Z

<?php

$input = [];

$s = microtime(true);

for ($i = 0; $i < 1000000; $i++)
 $name = isset($input['name']) ? $input['name']:'John';

var_dump(microtime(true)-$s);

$s = microtime(true);

for ($i = 0; $i < 1000000; $i++)
 $name = $input['name'] ?? 'John';

var_dump(microtime(true)-$s);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
microtime: documentation ( source)

preferences:dark modelive preview

31.85 ms | 402 KiB | 5 Q