3v4l.org

run code in 300+ PHP versions simultaneously
<?php $b = "foo"; echo "$b$b";

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)
8.3.60.0060.00916.50
8.3.50.0110.00418.07
8.3.40.0070.00718.55
8.3.30.0100.00318.97
8.3.20.0000.00720.07
8.3.10.0080.00021.63
8.3.00.0060.00320.90
8.2.180.0040.01118.17
8.2.170.0130.00719.09
8.2.160.0000.01322.96
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0100.00019.33
8.2.110.0100.00020.36
8.2.100.0040.00818.09
8.2.90.0040.00419.22
8.2.80.0000.00817.97
8.2.70.0000.00917.38
8.2.60.0090.00017.93
8.2.50.0040.00418.07
8.2.40.0040.00718.10
8.2.30.0040.00418.12
8.2.20.0070.00017.69
8.2.10.0040.00418.04
8.2.00.0000.00717.60
8.1.280.0190.00425.92
8.1.270.0060.00320.79
8.1.260.0080.00026.35
8.1.250.0060.00628.09
8.1.240.0030.00623.82
8.1.230.0090.00319.12
8.1.220.0030.00517.74
8.1.210.0000.00718.77
8.1.200.0060.00317.36
8.1.190.0040.00417.22
8.1.180.0040.00418.10
8.1.170.0040.00418.65
8.1.160.0050.00322.00
8.1.150.0070.00318.73
8.1.140.0030.00517.42
8.1.130.0030.00317.69
8.1.120.0030.00617.37
8.1.110.0000.00717.31
8.1.100.0040.00417.38
8.1.90.0020.00517.44
8.1.80.0000.00717.38
8.1.70.0030.00317.31
8.1.60.0000.00917.52
8.1.50.0000.00817.43
8.1.40.0000.00817.34
8.1.30.0090.00017.42
8.1.20.0040.00417.46
8.1.10.0040.00417.44
8.1.00.0000.00817.43
8.0.300.0040.00418.77
8.0.290.0040.00416.75
8.0.280.0070.00018.43
8.0.270.0030.00317.23
8.0.260.0030.00317.25
8.0.250.0080.00016.84
8.0.240.0020.00516.82
8.0.230.0070.00016.98
8.0.220.0000.00716.75
8.0.210.0000.00716.74
8.0.200.0070.00016.91
8.0.190.0030.00616.95
8.0.180.0050.00216.99
8.0.170.0040.00416.72
8.0.160.0000.00716.89
8.0.150.0040.00416.78
8.0.140.0000.00816.81
8.0.130.0050.00013.28
8.0.120.0030.00516.86
8.0.110.0040.00416.71
8.0.100.0070.00016.82
8.0.90.0070.00016.87
8.0.80.0090.00616.82
8.0.70.0000.00716.75
8.0.60.0000.00716.91
8.0.50.0040.00416.74
8.0.30.0120.00917.04
8.0.20.0140.01417.40
8.0.10.0000.00716.81
8.0.00.0080.01416.78
7.4.330.0030.00315.03
7.4.320.0070.00016.29
7.4.300.0000.00616.50
7.4.290.0030.00616.32
7.4.280.0000.00816.32
7.4.270.0000.00616.42
7.4.260.0000.00716.35
7.4.250.0050.00316.29
7.4.240.0070.00216.46
7.4.230.0030.00416.53
7.4.220.0040.02216.56
7.4.210.0100.00516.47
7.4.200.0000.00716.33
7.4.160.0060.00916.39
7.4.150.0060.01217.40
7.4.140.0090.01017.86
7.4.130.0170.00216.37
7.4.120.0130.00616.45
7.4.110.0140.00316.48
7.4.100.0180.00316.41
7.4.90.0140.00316.30
7.4.80.0070.01119.39
7.4.70.0070.01116.48
7.4.60.0100.00716.35
7.4.50.0000.00816.56
7.4.40.0130.00316.43
7.4.30.0060.01616.52
7.4.00.0100.00614.72
7.3.330.0000.00513.11
7.3.320.0000.00513.11
7.3.310.0030.00316.12
7.3.300.0030.00316.22
7.3.290.0030.00316.09
7.3.280.0110.00716.18
7.3.270.0150.00317.40
7.3.260.0130.01016.25
7.3.250.0150.00916.18
7.3.240.0060.00916.47
7.3.230.0160.00616.41
7.3.210.0060.01016.60
7.3.200.0150.00719.39
7.3.190.0150.00316.12
7.3.180.0140.00616.21
7.3.170.0100.01016.47
7.3.160.0130.00316.18
7.2.330.0110.01116.60
7.2.320.0100.00716.30
7.2.310.0000.01716.49
7.2.300.0000.01716.60
7.2.290.0030.01416.41
7.2.60.0070.00716.79
7.2.00.0060.00619.29
7.1.100.0030.00918.14
7.1.70.0000.01217.00
7.1.60.0040.02119.46
7.1.50.0090.00916.66
7.1.00.0030.07722.48
7.0.200.0060.00314.82
7.0.140.0100.06721.92
7.0.60.0200.05020.02
7.0.50.0070.06717.88
7.0.40.0030.04320.07
7.0.30.0300.07720.04
7.0.20.0330.07020.12
7.0.10.0100.07320.09
7.0.00.0030.08320.08
5.6.280.0070.06721.12
5.6.210.0100.06020.49
5.6.200.0070.03718.13
5.6.190.0070.08020.56
5.6.180.3600.03020.41
5.6.170.0230.06720.62
5.6.160.0100.05020.43
5.6.150.0070.03718.18
5.6.140.0100.07018.15
5.6.130.0070.04718.11
5.6.120.0100.07720.98
5.6.110.0130.07021.09
5.6.100.0130.07720.84
5.6.90.0070.06721.09
5.6.80.0000.04320.26
5.6.70.3500.03720.33
5.5.350.0230.06320.34
5.5.340.0000.07318.03
5.5.330.0030.07020.36
5.5.320.0170.06020.31
5.5.310.0270.07320.28
5.5.300.0130.06717.91
5.5.290.0000.06017.89
5.5.280.0030.08720.83
5.5.270.0070.04020.64
5.5.260.0100.05320.73
5.5.250.0070.03720.78
5.5.240.0270.07320.26
5.4.450.0730.06019.45
5.4.440.0330.05719.61
5.4.430.0230.05719.46
5.4.420.0270.05319.63
5.4.410.0270.05319.34
5.4.400.0200.05318.95
5.4.390.0900.06018.52
5.4.380.1000.05318.72
5.4.370.0870.06718.73
5.4.360.0930.05318.65
5.4.350.0870.05318.70
5.4.340.1070.05018.45
5.4.320.0870.05318.73
5.4.310.0900.06718.59
5.4.300.0970.05018.65
5.4.290.0800.06318.65
5.4.280.0870.05318.48
5.4.270.0870.05018.48
5.4.260.0870.04718.69
5.4.250.0870.05318.48
5.4.240.0930.06718.71
5.4.230.0930.04318.68
5.4.220.0900.06018.48
5.4.210.0930.07018.68
5.4.200.0830.05316.64
5.4.190.1100.04018.47
5.4.180.0830.05718.75
5.4.170.0770.06018.57
5.4.160.0830.05318.56
5.4.150.0800.05318.60
5.4.140.0830.05316.41
5.4.130.0900.04016.26
5.4.120.1000.04316.04
5.4.110.0800.05716.30
5.4.100.1030.04016.07
5.4.90.0930.05716.25
5.4.80.0930.05316.23
5.4.70.0900.05316.29
5.4.60.1000.04316.12
5.4.50.0970.04716.18
5.4.40.1030.04016.09
5.4.30.1200.06016.19
5.4.20.1030.06016.23
5.4.10.1130.06716.31
5.4.00.0900.05315.71
5.3.290.1100.05314.66
5.3.280.1000.05014.50
5.3.270.1100.05714.57
5.3.260.1030.04714.53
5.3.250.1030.05014.57
5.3.240.1070.04714.69
5.3.230.0930.05714.56
5.3.220.1030.04314.47
5.3.210.0900.06714.50
5.3.200.0930.06014.48
5.3.190.1030.04314.66
5.3.180.0870.05314.54
5.3.170.0970.04014.65
5.3.160.0830.06014.51
5.3.150.1030.04014.55
5.3.140.0930.04714.51
5.3.130.0930.05714.55
5.3.120.1000.05314.49
5.3.110.0870.06314.45
5.3.100.1000.05314.13
5.3.90.1000.04714.05
5.3.80.1070.05314.09
5.3.70.1170.06713.95
5.3.60.1270.06013.95
5.3.50.0900.05313.91
5.3.40.0970.07013.92
5.3.30.1000.06314.00
5.3.20.0870.05713.79
5.3.10.1030.04713.64
5.3.00.1000.04713.62
5.2.170.0800.04311.20
5.2.160.0800.04011.13
5.2.150.0830.03711.18
5.2.140.0770.05011.11
5.2.130.0770.04311.10
5.2.120.0870.03311.09
5.2.110.0900.05011.03
5.2.100.0870.03311.16
5.2.90.0800.04011.05
5.2.80.0830.03711.02
5.2.70.0870.04011.05
5.2.60.0870.03710.96
5.2.50.0630.06010.98
5.2.40.0600.04010.99
5.2.30.0670.03311.00
5.2.20.0630.04310.91
5.2.10.0730.03010.89
5.2.00.0630.04310.84
5.1.60.0630.03710.02
5.1.50.0630.03310.04
5.1.40.0600.0339.99
5.1.30.0700.03010.42
5.1.20.0600.03710.41
5.1.10.0630.03310.12
5.1.00.0600.04010.06
5.0.50.0270.0338.57
5.0.40.0370.0238.50
5.0.30.0330.0408.32
5.0.20.0300.0308.27
5.0.10.0330.0308.15
5.0.00.0300.0438.14
4.4.90.0400.0135.93
4.4.80.0370.0175.92
4.4.70.0300.0235.92
4.4.60.0300.0235.92
4.4.50.0300.0235.95
4.4.40.0300.0335.92
4.4.30.0300.0235.94
4.4.20.0300.0235.92
4.4.10.0370.0175.93
4.4.00.0300.0375.92
4.3.110.0330.0205.92
4.3.100.0330.0205.92
4.3.90.0370.0175.92
4.3.80.0400.0305.92
4.3.70.0300.0205.92
4.3.60.0400.0135.92
4.3.50.0370.0205.92
4.3.40.0330.0305.92
4.3.30.0230.0175.92
4.3.20.0130.0275.92
4.3.10.0270.0205.92
4.3.00.0070.03314.42

preferences:
41.77 ms | 400 KiB | 5 Q