3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'c'.2; echo $a;

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)
5.4.270.0200.03319.19
5.4.260.0200.03318.85
5.4.250.0170.03718.88
5.4.240.0270.04019.22
5.4.230.0230.03719.21
5.4.220.0200.03719.05
5.4.210.0170.03719.05
5.4.200.0270.03019.13
5.4.190.0170.04019.07
5.4.180.0230.03318.86
5.4.170.0270.03719.06
5.4.160.0230.06319.22
5.4.150.0230.05018.92
5.4.140.0270.03316.42
5.4.130.0270.04316.37
5.4.120.0270.07316.45
5.4.110.0270.06016.45
5.4.100.0200.04316.31
5.4.90.0300.03716.55
5.4.80.0230.06716.19
5.4.70.0230.06016.54
5.4.60.0230.04316.18
5.4.50.0300.04016.52
5.4.40.0270.04316.55
5.4.30.0230.05716.42
5.4.20.0300.04316.43
5.4.10.0270.04316.51
5.4.00.0230.03715.92
5.3.280.0200.04014.40
5.3.270.0270.03714.52
5.3.260.0230.08014.51
5.3.250.0270.06014.48
5.3.240.0300.04014.66
5.3.230.0230.07714.54
5.3.220.0330.06014.66
5.3.210.0200.06314.43
5.3.200.0200.06014.63
5.3.190.0270.06714.52
5.3.180.0200.03314.40
5.3.170.0170.04314.50
5.3.160.0330.06314.51
5.3.150.0270.05714.44
5.3.140.0200.07314.43
5.3.130.0400.06014.39
5.3.120.0300.07314.50
5.3.110.0330.05714.57
5.3.100.0270.07714.10
5.3.90.0300.06714.10
5.3.80.0230.07314.10
5.3.70.0330.06314.10
5.3.60.0270.03314.10
5.3.50.0330.06714.10
5.3.40.0270.05014.10
5.3.30.0330.04314.10
5.3.20.0400.06714.10
5.3.10.0300.06714.10
5.3.00.0300.03714.10
5.2.170.0230.05714.10
5.2.160.0230.05314.10
5.2.150.0270.06014.10
5.2.140.0270.03014.10
5.2.130.0230.04714.10
5.2.120.0230.05714.10
5.2.110.0230.04714.10
5.2.100.0270.05314.10
5.2.90.0270.05714.10
5.2.80.0200.06014.10
5.2.70.0230.04714.10
5.2.60.0200.06014.10
5.2.50.0200.03714.10
5.2.40.0230.06014.10
5.2.30.0200.03714.10
5.2.20.0230.05314.10
5.2.10.0200.06014.10
5.2.00.0230.04714.10
5.1.60.0200.05314.10
5.1.50.0200.05014.10
5.1.40.0170.05314.10
5.1.30.0230.05014.10
5.1.20.0130.04014.10
5.1.10.0230.05014.10
5.1.00.0230.02714.10
5.0.50.0130.03314.10
5.0.40.0100.02714.10
5.0.30.0100.06714.10
5.0.20.0230.03014.10
5.0.10.0200.02314.10
5.0.00.0070.03314.10
4.4.90.0070.02314.10
4.4.80.0100.04014.10
4.4.70.0070.02314.10
4.4.60.0170.03014.10
4.4.50.0070.03014.10
4.4.40.0070.06014.10
4.4.30.0170.02714.10
4.4.20.0100.02714.10
4.4.10.0170.03014.10
4.4.00.0200.04014.10
4.3.110.0070.02714.10
4.3.100.0100.02014.10
4.3.90.0100.02714.10
4.3.80.0070.04314.10
4.3.70.0130.01014.10
4.3.60.0130.03014.10
4.3.50.0070.02314.10
4.3.40.0100.05314.10
4.3.30.0070.01314.10
4.3.20.0030.01714.10
4.3.10.0100.02014.10
4.3.00.0100.02714.10

preferences:
133.28 ms | 1398 KiB | 7 Q