Online PHP editor | refs for JYXtF

<?php class abc { function abc() { $this->abc = 'Hello'; } function bcd() { $bcd = ' World'; return $this->abc . $bcd; } } $abc = new abc(); echo $abc->bcd(); $bcd = range( 1, 100 ); foreach( $bcd as $def ) { $efg = $def; } function better_array_diff($a, $b) { $map = array(); foreach($a as $val) $map[$val] = 1; foreach($b as $val) if(isset($map[$val])) unset($map[$val]); return $map; } $a = range(1, 10000); $b = range(5000, 15000); shuffle($a); shuffle($b); $ts = microtime(true); array_diff($a, $b); printf("array_diff=%.4f\n", microtime(true) - $ts); $ts = microtime(true); better_array_diff($a, $b); printf("better_array_diff=%.4f\n", microtime(true) - $ts);