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@ 2015-05-05T16:02:48Z

<?php

interface TestInterface {}
class TestClass implements TestInterface {}

$time = time();
for ($i = 0; $i < 1000000; $i++) {
  is_a('TestClass', 'TestInterface', true);
}
var_dump(sprintf('is_a time: %s', time() - $time));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
time: documentation ( source)
is_a: documentation ( source)
sprintf: documentation ( source)

preferences:dark modelive preview

37.68 ms | 402 KiB | 5 Q