note 116943 added to function.array-push

I did a performance check, and I saw, if you push more than one value it can be faster the array push, that the normal $array[] version. Case 1: $array[] = something; Case 2: array_push($array, $value); Case 3: array_push($array, $value1, $value2, $value3 [...]); $values are definied Case 4: array_push($array, $value1, $value2, $value3 [...]); $values are definied, when $array is not empty Case 5: Case1 + Case 3 Case 6: Result array contains some value (Case 4) Case 7: Result array contains same value as the push array (Case 4) ----------------------------------------------------------------------------------------------------------- ~~~~~~~~~~~~ Case 1 ~~~~~~~~~~~~ Times: 0.0310 0.0300 0.0290 0.0340 0.0400 0.0440 0.0480 0.0550 0.0570 0.0570 Min: 0.0290 Max: 0.0570 Avg: 0.0425 ~~~~~~~~~~~~ Case 2 ~~~~~~~~~~~~ Times: 0.3890 0.3850 0.3770 0.4110 0.4020 0.3980 0.4020 0.4060 0.4130 0.4200 Min: 0.3770 Max: 0.4200 Avg: 0.4003 ~~~~~~~~~~~~ Case 3 ~~~~~~~~~~~~ Times: 0.0200 0.0220 0.0240 0.0340 0.0360 0.0410 0.0460 0.0500 0.0520 0.0520 Min: 0.0200 Max: 0.0520 Avg: 0.0377 ~~~~~~~~~~~~ Case 4 ~~~~~~~~~~~~ Times: 0.0200 0.0250 0.0230 0.0260 0.0330 0.0390 0.0460 0.0510 0.0520 0.0520 Min: 0.0200 Max: 0.0520 Avg: 0.0367 ~~~~~~~~~~~~ Case 5 ~~~~~~~~~~~~ Times: 0.0260 0.0250 0.0370 0.0360 0.0390 0.0440 0.0510 0.0520 0.0530 0.0560 Min: 0.0250 Max: 0.0560 Avg: 0.0419 ~~~~~~~~~~~~ Case 6 ~~~~~~~~~~~~ Times: 0.0340 0.0280 0.0370 0.0410 0.0450 0.0480 0.0560 0.0580 0.0580 0.0570 Min: 0.0280 Max: 0.0580 Avg: 0.0462 ~~~~~~~~~~~~ Case 7 ~~~~~~~~~~~~ Times: 0.0290 0.0270 0.0350 0.0410 0.0430 0.0470 0.0540 0.0540 0.0550 0.0550 Min: 0.0270 Max: 0.0550 Avg: 0.044 Tester code: // Case 1 $startTime = microtime(true); $array = array(); for ($x = 1; $x <= 100000; $x++) { $array[] = $x; } $endTime = microtime(true); // Case 2 $startTime = microtime(true); $array = array(); for ($x = 1; $x <= 100000; $x++) { array_push($array, $x); } $endTime = microtime(true); // Case 3 $result = array(); $array2 = array(&$result)+$array; $startTime = microtime(true); call_user_func_array("array_push", $array2); $endTime = microtime(true); // Case 4 $result = array(); for ($x = 1; $x <= 100000; $x++) { $result[] = $x; } $array2 = array(&$result)+$array; $startTime = microtime(true); call_user_func_array("array_push", $array2); $endTime = microtime(true); // Case 5 $result = array(); $startTime = microtime(true); $array = array(&$result); for ($x = 1; $x <= 100000; $x++) { $array[] = $x; } $endTime = microtime(true); // Case 6 $result = array(1,2,3,4,5,6); $startTime = microtime(true); $array = array(&$result); for ($x = 1; $x <= 100000; $x++) { $array[] = $x; } $endTime = microtime(true); // Case 7 $result = array(); for ($x = 1; $x <= 100000; $x++) { $result[] = $x; } $startTime = microtime(true); $array = array(&$result); for ($x = 1; $x <= 100000; $x++) { $array[] = $x; } $endTime = microtime(true); ---- Server IP: 72.52.91.14 Probable Submitter: 89.147.72.60 ---- Manual Page -- http://php.net/manual/en/function.array-push.php Edit -- https://master.php.net/note/edit/116943 Del: integrated -- https://master.php.net/note/delete/116943/integrated Del: useless -- https://master.php.net/note/delete/116943/useless Del: bad code -- https://master.php.net/note/delete/116943/bad+code Del: spam -- https://master.php.net/note/delete/116943/spam Del: non-english -- https://master.php.net/note/delete/116943/non-english Del: in docs -- https://master.php.net/note/delete/116943/in+docs Del: other reasons-- https://master.php.net/note/delete/116943 Reject -- https://master.php.net/note/reject/116943 Search -- https://master.php.net/manage/user-notes.php