Online PHP editor | refs for t8CM0

<?php //copyright Lawrence Truett and FluffyCat.com 2009, all rights reserved define('BR', "\n"); echo 'Performance Testing PHP if / else VS switch with 100,000 iterations'.BR.BR; $ifTime = 0; $switchTime = 0; $arrayTime = 0; for ($x = 0; $x < 100000; $x++) { $oneToFive = rand(1,5); if (0 == fmod($x,2)) { $switchTime = $switchTime + testSwitch($oneToFive); $arrayTime = $arrayTime + testArray($oneToFive); $ifTime = $ifTime + testIf($oneToFive); } else { $ifTime = $ifTime + testArray($oneToFive); $arrayTime = $arrayTime + testArray($oneToFive); $switchTime = $switchTime + testIf($oneToFive); } } echo 'total if / else time: '.$ifTime.BR; echo 'total case time: '.$switchTime.BR; echo 'total array time: '.$arrayTime.BR; echo BR; if ($ifTime > $switchTime) { echo 'switch is quicker by '.($ifTime - $switchTime).BR; } else { echo 'if / else is quicker by '.($switchTime - $ifTime).BR; } function testSwitch($oneToFive) { $time_start = microtime(true); switch($oneToFive) { case 1: $z = 1; break; case 2: $z = 2; break; case 3: $z = 3; break; case 4: $z = 4; break; case 5: $z = 5; break; } $time_end = microtime(true); $time = $time_end - $time_start; return $time; } function testIf($oneToFive) { $time_start = microtime(true); if (1 == $oneToFive) { $z = 1; } elseif(2 == $oneToFive) { $z = 2; } elseif(3 == $oneToFive) { $z = 3; } elseif(4 == $oneToFive) { $z = 4; } elseif(5 == $oneToFive) { $z = 5; } $time_end = microtime(true); $time = $time_end - $time_start; return $time; } function testArray($oneToFive){ $time_start = microtime(true); $array = array(0,1,2,3,4,5); $result = $array[$oneToFive]; $time_end = microtime(true); $time = $time_end - $time_start; return $time; }