3v4l.org

run code in 300+ PHP versions simultaneously
<?php // casting vs. converting $a="123456789098734098710823740812038401982703489710289743089170289347019827034978"; $a*="123456789098734098710823740812038401982703489710289743089170289347019827034978"; $a*="123456789098734098710823740812038401982703489710289743089170289347019827034978"; $a*="12345678909873409871082374081203848768767896777556666689170289347019827034978"; const runs=2000000; $start=microtime(1); for ($i=1;$i<runs;$i++) if ($start+0); print 'Time: '.(microtime(1)-$start)."<br>\n"; $start=microtime(1); for ($i=1;$i<runs;$i++) if ((int)$start); print 'Time: '.(microtime(1)-$start);

preferences:
34.33 ms | 402 KiB | 5 Q