3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(substr('X', 0, 0));

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)
8.3.60.0140.00016.50
8.3.50.0120.00918.16
8.3.40.0120.00318.72
8.3.30.0040.01119.05
8.3.20.0050.00320.34
8.3.10.0040.00421.59
8.3.00.0090.00019.38
8.2.180.0100.01018.00
8.2.170.0090.00922.96
8.2.160.0120.00320.48
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0000.00819.64
8.2.110.0000.01022.04
8.2.100.0040.00817.63
8.2.90.0000.00718.80
8.2.80.0080.00017.97
8.2.70.0000.00917.38
8.2.60.0030.00517.80
8.2.50.0040.00418.07
8.2.40.0070.00018.09
8.2.30.0040.00417.99
8.2.20.0030.00517.47
8.2.10.0040.00417.81
8.2.00.0000.00717.55
8.1.280.0170.00325.92
8.1.270.0040.00418.73
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00323.84
8.1.230.0070.00419.01
8.1.220.0000.00917.74
8.1.210.0000.00918.77
8.1.200.0030.00617.22
8.1.190.0080.00017.10
8.1.180.0080.00018.10
8.1.170.0040.00718.38
8.1.160.0030.00321.95
8.1.150.0050.00318.64
8.1.140.0000.00717.34
8.1.130.0030.00317.83
8.1.120.0000.00717.32
8.1.110.0040.00417.23
8.1.100.0040.00417.35
8.1.90.0070.00017.38
8.1.80.0040.00417.30
8.1.70.0040.00417.38
8.1.60.0040.00417.37
8.1.50.0040.00417.39
8.1.40.0040.00417.32
8.1.30.0040.00417.42
8.1.20.0000.00717.50
8.1.10.0080.00017.34
8.1.00.0040.00417.35
8.0.300.0020.00518.77
8.0.290.0040.00416.63
8.0.280.0030.00318.35
8.0.270.0070.00017.18
8.0.260.0060.00017.20
8.0.250.0030.00316.83
8.0.240.0000.00716.73
8.0.230.0030.00716.82
8.0.220.0030.00316.64
8.0.210.0030.00316.75
8.0.200.0000.00616.86
8.0.190.0050.00316.84
8.0.180.0050.00316.67
8.0.170.0000.00816.80
8.0.160.0080.00016.88
8.0.150.0070.00016.75
8.0.140.0070.00016.69
8.0.130.0000.00713.18
8.0.120.0000.00716.79
8.0.110.0030.00516.68
8.0.100.0040.00416.71
8.0.90.0050.00216.78
8.0.80.0160.00616.66
8.0.70.0070.00016.76
8.0.60.0000.00716.66
8.0.50.0000.00816.81
8.0.30.0160.00416.84
8.0.20.0130.00917.40
8.0.10.0040.00416.91
8.0.00.0090.00816.81
7.4.330.0030.00315.03
7.4.320.0030.00316.50
7.4.300.0040.00416.35
7.4.290.0070.00016.40
7.4.280.0040.00416.48
7.4.270.0000.00716.28
7.4.260.0000.00716.46
7.4.250.0030.00316.46
7.4.240.0050.00316.41
7.4.230.0030.00316.28
7.4.220.0040.01416.41
7.4.210.0060.00916.47
7.4.200.0050.00316.39
7.4.160.0090.00616.62
7.4.150.0150.00317.40
7.4.140.0080.01117.86
7.4.130.0100.00816.39
7.4.120.0100.00716.36
7.4.110.0070.01016.34
7.4.100.0060.01216.36
7.4.90.0110.00616.43
7.4.80.0080.01119.39
7.4.70.0090.00616.20
7.4.60.0080.00816.57
7.4.50.0020.00216.46
7.4.40.0130.00616.36
7.4.30.0000.01716.34
7.4.00.0020.01514.93
7.3.330.0000.00612.97
7.3.320.0120.00013.03
7.3.310.0030.00316.00
7.3.300.0000.00716.18
7.3.290.0030.00316.07
7.3.280.0110.00816.14
7.3.270.0110.00617.40
7.3.260.0110.00716.41
7.3.250.0060.01216.31
7.3.240.0060.01016.48
7.3.230.0230.01316.39
7.3.210.0170.00016.21
7.3.200.0070.01016.07
7.3.190.0130.00316.26
7.3.180.0090.00616.38
7.3.170.0120.00616.27
7.3.160.0130.00316.25
7.3.120.0070.00714.44
7.3.110.0100.00714.72
7.3.100.0030.01214.84
7.3.90.0100.00314.69
7.3.80.0000.01414.47
7.3.70.0100.00314.69
7.3.60.0030.00614.53
7.3.50.0000.01414.69
7.3.40.0070.00414.75
7.3.30.0120.00314.77
7.3.20.0040.00416.27
7.3.10.0060.00716.46
7.3.00.0060.00616.43
7.2.330.0170.00016.55
7.2.320.0560.01316.48
7.2.310.0070.01016.53
7.2.300.0080.00816.25
7.2.290.0040.01416.54
7.2.250.0100.00614.88
7.2.240.0080.01214.80
7.2.230.0060.00914.82
7.2.220.0090.00314.99
7.2.210.0030.01015.02
7.2.200.0090.00014.79
7.2.190.0120.00414.47
7.2.180.0030.01314.93
7.2.170.0110.00414.73
7.2.130.0030.01516.65
7.2.120.0030.01216.73
7.2.110.0090.00616.86
7.2.100.0040.01216.80
7.2.90.0070.00716.87
7.2.80.0070.01016.70
7.2.70.0070.00316.87
7.2.60.0040.01116.58
7.2.50.0040.01116.46
7.2.40.0030.01316.64
7.2.30.0090.00616.54
7.2.20.0030.01016.59
7.2.10.0120.00316.90
7.2.00.0080.00817.64
7.1.330.0080.00615.64
7.1.320.0100.00015.71
7.1.310.0030.01015.48
7.1.300.0030.00915.77
7.1.290.0030.00715.46
7.1.280.0090.00315.40
7.1.270.0110.00315.84
7.1.260.0030.00615.63
7.1.250.0070.00315.66
7.1.100.0090.00617.91
7.1.70.0040.00417.20
7.1.60.0110.01419.50
7.1.50.0000.02416.50
7.1.00.0000.08022.43
7.0.200.0000.00716.34
7.0.140.0070.05722.19
7.0.60.0000.04719.90
7.0.50.0030.04317.79
7.0.40.0100.08320.30
7.0.30.0370.07020.09
7.0.20.0230.06320.02
7.0.10.0070.07320.09
7.0.00.0070.06020.09
5.6.280.0130.06321.09
5.6.210.0170.07720.48
5.6.200.0070.08018.15
5.6.190.0070.04020.64
5.6.180.3770.04320.54
5.6.170.0230.05720.47
5.6.160.0000.07020.38
5.6.150.0030.04018.21
5.6.140.0070.06318.14
5.6.130.0070.04018.07
5.6.120.0070.08021.09
5.6.110.0030.06321.04
5.6.100.0070.07720.88
5.6.90.0130.04321.09
5.6.80.0130.07320.37
5.6.70.3570.03320.52
5.5.350.0070.08020.29
5.5.340.0070.06717.93
5.5.330.0070.07020.06
5.5.320.0100.04720.13
5.5.310.0370.04720.29
5.5.300.0070.04017.87
5.5.290.0070.04717.95
5.5.280.0030.07320.88
5.5.270.0170.07320.83
5.5.260.0100.07320.96
5.5.250.0000.06320.57
5.5.240.0000.08320.20
5.4.450.0030.04319.14
5.4.440.3370.04019.39
5.4.430.3500.04719.54
5.4.420.3030.04319.56
5.4.410.3330.04019.44
5.4.400.3930.04019.10
5.4.390.3500.03719.09
5.4.380.3530.04018.95
5.4.370.3330.04018.93
5.4.360.2930.03319.13
5.4.350.3630.04019.13
5.4.340.3470.03719.09
5.4.320.3030.03718.92
5.4.310.3830.02718.88
5.4.300.3730.03718.92
5.4.290.3700.04019.16
5.4.280.3800.04019.08
5.4.270.4030.03319.13
5.4.260.4230.04019.15
5.4.250.4170.03719.17
5.4.240.3830.04719.07
5.4.230.3500.04019.15
5.4.220.2530.04019.08
5.4.210.3430.03719.08
5.4.200.3330.03319.08
5.4.190.3270.04318.92
5.4.180.3230.04018.87
5.4.170.4230.04319.23
5.4.160.3500.04318.89
5.4.150.3300.03719.23
5.4.140.4270.03316.29
5.4.130.4270.03316.25
5.4.120.3770.03316.30
5.4.110.3030.03716.39
5.4.100.3400.03316.48
5.4.90.3900.04316.40
5.4.80.3330.02716.39
5.4.70.3970.03716.48
5.4.60.3530.04016.33
5.4.50.3600.03716.36
5.4.40.3570.03316.39
5.4.30.3600.03316.39
5.4.20.3870.04016.41
5.4.10.3400.03716.46
5.4.00.3670.04715.71
5.3.290.3330.03714.56
5.3.280.3500.03014.63
5.3.270.3570.03714.69
5.3.260.3300.04014.43
5.3.250.4070.03714.45
5.3.240.4130.03314.47
5.3.230.4030.03314.68
5.3.220.3030.04014.47
5.3.210.3830.04714.39
5.3.200.3630.03714.59
5.3.190.3600.04014.41
5.3.180.3630.03014.51
5.3.170.3500.03714.51
5.3.160.3670.03714.39
5.3.150.3830.04014.51
5.3.140.3600.03014.59
5.3.130.3770.03314.49
5.3.120.3630.03714.40
5.3.110.3030.03714.40
5.3.100.3770.04714.01
5.3.90.3570.04013.97
5.3.80.3470.03313.89
5.3.70.3700.04313.96
5.3.60.3770.03013.78
5.3.50.3570.03313.78
5.3.40.0970.04713.74
5.3.30.0000.07313.75
5.3.20.4400.03013.63
5.3.10.3530.04013.74
5.3.00.3430.04013.48
5.2.170.2730.03010.97
5.2.160.3170.02710.98
5.2.150.0030.04311.19
5.2.140.0000.04011.20
5.2.130.3670.02010.96
5.2.120.3370.03711.04
5.2.110.3000.03311.03
5.2.100.3000.03011.00
5.2.90.2800.02710.95
5.2.80.3030.03011.24
5.2.70.2930.03311.18
5.2.60.2830.03711.05
5.2.50.3130.04010.86
5.2.40.2230.03310.83
5.2.30.1900.03710.82
5.2.20.1900.02710.97
5.2.10.2030.02710.82
5.2.00.2200.03310.74
5.1.60.2270.02010.70
5.1.50.2700.02310.70
5.1.40.2230.02310.70
5.1.30.2200.03010.70
5.1.20.2200.02710.70
5.1.10.0070.02010.70
5.1.00.0000.02710.70
5.0.50.0070.01710.70
5.0.40.0000.02010.70
5.0.30.0000.03010.70
5.0.20.1230.02010.70
5.0.10.0870.01710.70
5.0.00.1100.03310.70
4.4.90.1100.01710.70
4.4.80.1530.01010.70
4.4.70.1100.01710.70
4.4.60.1130.01310.70
4.4.50.1130.01310.70
4.4.40.1170.02010.70
4.4.30.1230.01010.70
4.4.20.0430.01310.70
4.4.10.0000.01710.70
4.4.00.0000.02310.70
4.3.110.0030.01010.70
4.3.100.1130.01310.70
4.3.90.1100.01310.70
4.3.80.1170.02710.70
4.3.70.1270.02010.70
4.3.60.1470.01710.70
4.3.50.1330.02010.70
4.3.40.1170.02010.70
4.3.30.0600.01310.70
4.3.20.0530.01710.70
4.3.10.0770.02310.70
4.3.00.0730.02310.70

preferences:
47.6 ms | 400 KiB | 5 Q