3v4l.org

run code in 300+ PHP versions simultaneously
<?php function CreateA6DigitUserID() { $az = range('A','Z'), range('a','z'); $one = $az[mt_rand(0,count($az)-1)]; $two = $az[mt_rand(0,count($az)-1)]; $digits = str_pad(mt_rand(0,9999), 4, "0", STR_PAD_LEFT); return $one.$two.$digits; } echo CreateA6DigitUserID();

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
5.4.270.0070.07318.84
5.4.260.0100.07719.00
5.4.250.0100.05019.04
5.4.240.0130.05018.83
5.4.230.0130.05318.96
5.4.220.0170.04719.00
5.4.210.0070.05718.65
5.4.200.0030.06018.65
5.4.190.0030.08018.74
5.4.180.0100.06018.94
5.4.170.0100.05718.83
5.4.160.0200.04318.89
5.4.150.0100.05718.64
5.4.140.0030.07716.52
5.4.130.0070.05316.43
5.4.120.0130.06716.55
5.4.110.0000.05716.36
5.4.100.0070.05716.57
5.4.90.0070.05016.51
5.4.80.0100.04316.40
5.4.70.0130.07316.41
5.4.60.0100.05016.39
5.4.50.0130.05316.38
5.4.40.0170.06016.44
5.4.30.0070.05016.49
5.4.20.0000.05716.62
5.4.10.0030.05316.38
5.4.00.0100.05016.00
5.3.280.0030.07314.58
5.3.270.0130.05014.43
5.3.260.0200.06314.67
5.3.250.0070.05014.69
5.3.240.0170.04714.59
5.3.230.0070.05014.59
5.3.220.0100.05014.65
5.3.210.0130.05014.75
5.3.200.0100.05314.64
5.3.190.0300.03314.79
5.3.180.0030.06314.46
5.3.170.0070.06314.74
5.3.160.0070.05014.39
5.3.150.0030.08314.70
5.3.140.0070.07714.56
5.3.130.0030.05714.52
5.3.120.0070.05314.76
5.3.110.0130.06714.70
5.3.100.0070.05314.01
5.3.90.0200.04714.02
5.3.80.0070.05314.02
5.3.70.0130.05314.10
5.3.60.0130.05014.02
5.3.50.0130.04313.93
5.3.40.0030.06013.92
5.3.30.0030.05313.92
5.3.20.0030.05313.76
5.3.10.0170.05713.73
5.3.00.0070.06713.73
5.2.170.0070.04311.21
5.2.160.0030.06011.14
5.2.150.0070.06011.30
5.2.140.0070.03711.20
5.2.130.0000.06711.06
5.2.120.0000.04711.18
5.2.110.0100.03711.01
5.2.100.0000.06011.10
5.2.90.0100.04011.25
5.2.80.0070.04311.07
5.2.70.0070.05011.15
5.2.60.0030.04010.96
5.2.50.0130.04011.24
5.2.40.0030.05710.95
5.2.30.0070.04010.92
5.2.20.0200.02711.14
5.2.10.0170.03010.93
5.2.00.0000.05010.80
5.1.60.0130.0339.83
5.1.50.0100.03010.09
5.1.40.0000.04010.07
5.1.30.0030.03710.51
5.1.20.0000.05010.57
5.1.10.0070.03310.02
5.1.00.0130.03010.02
5.0.50.0030.0278.61
5.0.40.0030.0308.46
5.0.30.0070.0508.29
5.0.20.0030.0278.28
5.0.10.0000.0308.21
5.0.00.0070.0408.16
4.4.90.0000.0336.25
4.4.80.0100.0236.25
4.4.70.0030.0236.25
4.4.60.0030.0206.25
4.4.50.0030.0336.25
4.4.40.0030.0436.25
4.4.30.0130.0206.25
4.4.20.0000.0336.25
4.4.10.0030.0206.25
4.4.00.0170.0206.25
4.3.110.0100.0206.25
4.3.100.0070.0306.25
4.3.90.0070.0206.25
4.3.80.0000.0376.25
4.3.70.0000.0236.25
4.3.60.0000.0236.25
4.3.50.0030.0306.25
4.3.40.0030.0336.25
4.3.30.0030.0276.25
4.3.20.0000.0236.25
4.3.10.0070.0236.25
4.3.00.0100.0236.72

preferences:
144.49 ms | 1394 KiB | 7 Q