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@ 2014-04-14T07:16:54Z

<?php
class phpdbg {
    public function isGreat($greeting = null) {
        printf(
            "%s: %s\n", __METHOD__, $greeting);
        return $this;
    }
}

$dbg = new phpdbg();

var_dump($dbg->isGreat("PHP Rocks !!"));
?>

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
printf: documentation ( source)

preferences:dark modelive preview

36.3 ms | 402 KiB | 5 Q