3v4l.org

run code in 300+ PHP versions simultaneously
<?php a = ''; var_dump(empty(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)
5.4.340.0270.05719.32
5.4.320.0300.07019.23
5.4.310.0300.05719.25
5.4.300.0130.05719.22
5.4.290.0230.06018.87
5.4.280.0170.05719.13
5.4.270.0300.06319.06
5.4.260.0270.07019.15
5.4.250.0200.05718.96
5.4.240.0100.05018.84
5.4.230.0200.03719.30
5.4.220.0130.04318.85
5.4.210.0330.05318.86
5.4.200.0230.05319.19
5.4.190.0230.05018.98
5.4.180.0270.04319.13
5.4.170.0300.06319.07
5.4.160.0230.05318.96
5.4.150.0300.07019.22
5.4.140.0330.06316.54
5.4.130.0370.04016.33
5.4.120.0230.06716.32
5.4.110.0270.05316.56
5.4.100.0270.06316.52
5.4.90.0330.05716.54
5.4.80.0270.06316.34
5.4.70.0230.06316.55
5.4.60.0230.05016.43
5.4.50.0300.07016.34
5.4.40.0230.03716.49
5.4.30.0300.06316.43
5.4.20.0230.05316.42
5.4.10.0270.06716.37
5.4.00.0230.04315.78
5.3.290.0170.04014.50
5.3.280.0170.04314.43
5.3.270.0170.06014.70
5.3.260.0130.07014.48
5.3.250.0300.06014.69
5.3.240.0200.05714.48
5.3.230.0270.05014.55
5.3.220.0300.05314.51
5.3.210.0270.06014.41
5.3.200.0170.07014.43
5.3.190.0270.07314.41
5.3.180.0300.07314.61
5.3.170.0270.06314.65
5.3.160.0270.05714.51
5.3.150.0170.06314.40
5.3.140.0230.06714.39
5.3.130.0270.07314.39
5.3.120.0300.07314.40
5.3.110.0270.07314.38
5.3.100.0270.04313.89
5.3.90.0300.06714.07
5.3.80.0200.07313.96
5.3.70.0270.07014.10
5.3.60.0230.06314.09
5.3.50.0270.06713.99
5.3.40.0200.07713.89
5.3.30.0300.05313.75
5.3.20.0300.04013.49
5.3.10.0270.04313.53
5.3.00.0230.05313.58
5.2.170.0200.04713.33
5.2.160.0100.05013.33
5.2.150.0230.05313.33
5.2.140.0230.06013.33
5.2.130.0330.04013.33
5.2.120.0130.03713.33
5.2.110.0200.06313.33
5.2.100.0130.04013.33
5.2.90.0200.05013.33
5.2.80.0170.04713.33
5.2.70.0170.06013.33
5.2.60.0200.05713.33
5.2.50.0230.04713.33
5.2.40.0130.05713.33
5.2.30.0200.06313.33
5.2.20.0130.04713.33
5.2.10.0200.05713.33
5.2.00.0200.05313.33
5.1.60.0170.04313.33
5.1.50.0200.03013.33
5.1.40.0130.03013.33
5.1.30.0200.05013.33
5.1.20.0270.04313.33
5.1.10.0170.05013.33
5.1.00.0230.04313.33
5.0.50.0100.03313.33
5.0.40.0130.02013.33
5.0.30.0100.05313.33
5.0.20.0070.03013.33
5.0.10.0170.01713.33
5.0.00.0070.06313.33
4.4.90.0100.01713.33
4.4.80.0070.03013.33
4.4.70.0100.03313.33
4.4.60.0200.01313.33
4.4.50.0070.03013.33
4.4.40.0130.04713.33
4.4.30.0070.03013.33
4.4.20.0100.03013.33
4.4.10.0100.03013.33
4.4.00.0070.04713.33
4.3.110.0100.01713.33
4.3.100.0130.03013.33
4.3.90.0100.02013.33
4.3.80.0130.05313.33
4.3.70.0170.02313.33
4.3.60.0200.02313.33
4.3.50.0070.03713.33
4.3.40.0070.03313.33
4.3.30.0070.02713.33
4.3.20.0030.01713.33
4.3.10.0030.03013.33
4.3.00.0030.02313.33

preferences:
142.43 ms | 1394 KiB | 7 Q