note 114136 added to language.generators.overview

Abstract test. <?php $start_time=microtime(true); $array = array(); $result = ''; for($count=1000000; $count--;) { $array[]=$count/2; } foreach($array as $val) { $val += 145.56; $result .= $val; } $end_time=microtime(true); echo "time: ", bcsub($end_time, $start_time, 4), "\n"; echo "memory (byte): ", memory_get_peak_usage(true), "\n"; ?> <?php $start_time=microtime(true); $result = ''; function it() { for($count=1000000; $count--;) { yield $count/2; } } foreach(it() as $val) { $val += 145.56; $result .= $val; } $end_time=microtime(true); echo "time: ", bcsub($end_time, $start_time, 4), "\n"; echo "memory (byte): ", memory_get_peak_usage(true), "\n"; ?> Result: ---------------------------------- | time | memory, mb | ---------------------------------- | not gen | 2.1216 | 89.25 | |--------------------------------- | with gen | 6.1963 | 8.75 | |--------------------------------- | diff | < 192% | > 90% | ---------------------------------- ---- Server IP: 72.52.91.14 Probable Submitter: 72.52.91.14 ---- Manual Page -- http://php.net/manual/en/language.generators.overview.php Edit -- https://master.php.net/note/edit/114136 Del: integrated -- https://master.php.net/note/delete/114136/integrated Del: useless -- https://master.php.net/note/delete/114136/useless Del: bad code -- https://master.php.net/note/delete/114136/bad+code Del: spam -- https://master.php.net/note/delete/114136/spam Del: non-english -- https://master.php.net/note/delete/114136/non-english Del: in docs -- https://master.php.net/note/delete/114136/in+docs Del: other reasons-- https://master.php.net/note/delete/114136 Reject -- https://master.php.net/note/reject/114136 Search -- https://master.php.net/manage/user-notes.php