Online PHP editor | refs for IJHW6

<?php $classmap1 = array(); for ($i=1; $i<=5000; $i++) { $classmap1['a'.$i] = $i+1; } $classmap2 = array(); for ($i=1; $i<=5000; $i++) { $classmap2['b'.$i] = $i+1; } $startTimeFunc = microtime(true); array_merge($classmap1, $classmap2); $endTimeFunc = microtime(true); echo "Func took " . (($endTimeFunc - $startTimeFunc)*1000) ." microseconds<br />\n";