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<?php $test=array(); for($run=0; $run<1000; $run++) $test[]=rand(0,100); $time=microtime(true); for($run=0; $run<100; $run++) $out=array_unique($test); $time=microtime(true)-$time; echo 'Array Unique: '.$time."\n"; $time=microtime(true); for($run=0; $run<100; $run++) $out=array_keys(array_flip($test)); $time=microtime(true)-$time; echo 'Keys Flip: '.$time."\n"; $time=microtime(true); for($run=0; $run<100; $run++) $out=array_flip(array_flip($test)); $time=microtime(true)-$time; echo 'Flip Flip: '.$time."\n"; ?>
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