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<?php $class = 'VeryStrangeThirdPartyLibraryName\\This\\Is\\A\\Very\\Long\\Namespace\\Path\\With\\Many\\Parts\\To\\This\\Class'; $iterations = 100000; foreach (range(0, 9) as $iteration) { $start = microtime(true); for ($i = 0; $i < $iterations; $i++) { if (0 === strpos($class, 'Yii\\')) { } } $finish = microtime(true) - $start; $startOlympiad = microtime(true); for ($i = 0; $i < $iterations; $i++) { if ('Yii\\' === substr($class, 0, 4)) { } } $finishOlympiad = microtime(true) - $startOlympiad; var_dump($finish); var_dump($finishOlympiad); var_dump('-------------'); }

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34.18 ms | 402 KiB | 5 Q