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run code in 150+ php & hhvm versions
Bugs & Features
<?php     $START = time();     $foo['bar'] = "test";     for ($i = 0; $i < 10000000; ++$i) {         if ($foo['bar'] == "test") {             $j = 0;         }     }     $END = time() - $START;     print "Array took $END seconds\n";     $START = time();     $testvar = $foo['bar'];     for ($i = 0; $i < 10000000; ++$i) {         if ($testvar == "test") {             $j = 0;         }    }    $END = time() - $START;    print "Var took $END seconds\n";
based on A5Xof
Output for 5.3.0 - 5.4.32
<?php     $START = time();     $foo['bar'] = "test";     for ($i = 0; $i < 10000000; ++$i) {         if ($foo['bar'] == "test") {             $j = 0;         }     }     $END = time() - $START;     print "Array took $END seconds\n";     $START = time();     $testvar = $foo['bar'];     for ($i = 0; $i < 10000000; ++$i) {         if ($testvar == "test") {             $j = 0;         }    }    $END = time() - $START;    print "Var took $END seconds\n";