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@ 2014-01-26T19:53:51Z

<?php
function f($req, $opt = null) {
	printf('$req: %d; $opt: %d; number of params: %d'."\n",
	$req, $opt);
}

f(1);
f(1, 2);
?>

Output
Performance
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References
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printf: documentation ( source)

preferences:dark modelive preview

40.43 ms | 402 KiB | 5 Q