3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo substr("1c72f7597f1aa9e994f648342a", 1); // возвращает "d"

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)
8.3.60.0090.00918.43
8.3.50.0090.00921.14
8.3.40.0090.00618.77
8.3.30.0100.00718.83
8.3.20.0070.00020.04
8.3.10.0070.00023.61
8.3.00.0030.00619.15
8.2.180.0170.00318.42
8.2.170.0120.00322.96
8.2.160.0110.00420.41
8.2.150.0050.00224.18
8.2.140.0060.00324.66
8.2.130.0050.00326.16
8.2.120.0070.00721.09
8.2.110.0030.00622.06
8.2.100.0040.00717.63
8.2.90.0040.00418.98
8.2.80.0080.00017.97
8.2.70.0030.00617.50
8.2.60.0040.00417.93
8.2.50.0050.00318.07
8.2.40.0030.00618.09
8.2.30.0040.00417.86
8.2.20.0000.00717.67
8.2.10.0040.00417.84
8.2.00.0080.00017.41
8.1.280.0110.01125.92
8.1.270.0040.00422.19
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0060.00323.79
8.1.230.0040.00819.16
8.1.220.0060.00317.74
8.1.210.0080.00018.77
8.1.200.0030.00717.13
8.1.190.0050.00217.23
8.1.180.0040.00418.10
8.1.170.0040.00418.53
8.1.160.0040.00421.93
8.1.150.0000.00718.62
8.1.140.0000.00817.37
8.1.130.0000.00717.79
8.1.120.0000.00717.36
8.1.110.0040.00417.34
8.1.100.0080.00017.41
8.1.90.0080.00017.27
8.1.80.0000.00717.20
8.1.70.0050.00217.28
8.1.60.0030.00717.33
8.1.50.0000.00817.21
8.1.40.0040.00417.24
8.1.30.0040.00417.55
8.1.20.0060.00317.51
8.1.10.0000.00717.29
8.1.00.0050.00217.36
8.0.300.0040.00418.77
8.0.290.0000.00716.75
8.0.280.0030.00318.27
8.0.270.0000.00717.20
8.0.260.0000.00817.09
8.0.250.0040.00416.77
8.0.240.0030.00316.76
8.0.230.0030.00316.68
8.0.220.0030.00316.80
8.0.210.0030.00316.63
8.0.200.0000.00616.84
8.0.190.0000.00716.68
8.0.180.0040.00416.76
8.0.170.0040.00416.67
8.0.160.0000.00816.77
8.0.150.0030.00316.61
8.0.140.0000.00716.65
8.0.130.0000.00613.20
8.0.120.0000.00716.71
8.0.110.0000.00716.73
8.0.100.0050.00316.79
8.0.90.0020.00516.71
8.0.80.0060.01016.78
8.0.70.0040.00416.65
8.0.60.0030.00516.82
8.0.50.0030.00416.54
8.0.30.0070.01217.05
8.0.20.0060.01517.40
8.0.10.0070.00016.73
8.0.00.0090.00916.68
7.4.330.0030.00315.02
7.4.320.0030.00316.41
7.4.300.0040.00416.40
7.4.290.0070.00316.45
7.4.280.0040.00416.42
7.4.270.0060.00016.33
7.4.260.0000.00716.33
7.4.250.0080.00016.44
7.4.240.0020.00516.34
7.4.230.0070.00016.35
7.4.220.0060.01316.46
7.4.210.0100.01116.50
7.4.200.0030.00316.56
7.4.160.0100.00716.43
7.4.150.0090.00917.40
7.4.140.0090.01117.86
7.4.130.0110.00616.26
7.4.120.0060.01216.29
7.4.110.0130.00316.34
7.4.100.0140.00716.43
7.4.90.0140.00316.45
7.4.80.0140.01319.39
7.4.70.0070.01116.48
7.4.60.0090.00916.55
7.4.50.0040.00016.53
7.4.40.0130.00316.45
7.4.30.0060.01016.20
7.4.00.0140.00415.01
7.3.330.0020.00213.11
7.3.320.0000.00512.88
7.3.310.0000.00716.27
7.3.300.0000.00716.11
7.3.290.0050.01016.12
7.3.280.0090.00616.14
7.3.270.0100.00717.40
7.3.260.0090.00916.44
7.3.250.0100.00716.18
7.3.240.0090.00916.21
7.3.230.0100.00616.43
7.3.210.0060.01016.38
7.3.200.0160.00619.39
7.3.190.0120.00616.17
7.3.180.0190.00316.21
7.3.170.0110.01116.27
7.3.160.0070.01516.13
7.3.10.0050.00616.47
7.3.00.0070.00416.41
7.2.330.0110.00816.56
7.2.320.0030.01516.58
7.2.310.0070.01016.61
7.2.300.0100.00716.40
7.2.290.0160.00616.59
7.2.130.0070.00716.66
7.2.120.0040.00616.58
7.2.110.0070.00716.65
7.2.100.0080.00516.73
7.2.90.0030.00716.49
7.2.80.0030.01016.70
7.2.70.0050.00816.72
7.2.60.0050.00916.51
7.2.50.0050.00916.69
7.2.40.0070.00416.62
7.2.30.0060.00616.77
7.2.20.0020.01116.72
7.2.10.0070.00616.74
7.2.00.0060.00517.28
7.1.250.0040.00715.57
7.1.100.0100.00018.15
7.1.70.0030.00716.90
7.1.60.0030.02219.32
7.1.50.0030.02116.97
7.1.00.0030.07722.28
7.0.200.0000.00816.30
7.0.140.0030.07322.13
7.0.60.0100.07719.94
7.0.50.0030.08017.89
7.0.40.0070.07320.23
7.0.30.0430.06020.29
7.0.20.0230.04320.02
7.0.10.0130.08020.33
7.0.00.0070.07720.01
5.6.280.0000.07720.91
5.6.210.0000.04720.46
5.6.200.0030.04018.23
5.6.190.0070.04020.77
5.6.180.0200.06320.77
5.6.170.0230.07020.48
5.6.160.0070.07320.50
5.6.150.0070.05318.18
5.6.140.0070.08318.18
5.6.130.0070.06718.11
5.6.120.0130.07720.98
5.6.110.0070.08321.04
5.6.100.0030.04320.97
5.6.90.0030.05321.11
5.6.80.0070.08020.37
5.6.70.1830.05720.55
5.5.350.0330.04320.52
5.5.340.0030.07717.91
5.5.330.0000.06720.21
5.5.320.0400.07320.18
5.5.310.0400.07020.23
5.5.300.0100.05717.95
5.5.290.0000.04317.90
5.5.280.0230.06720.79
5.5.270.0100.08020.86
5.5.260.0130.08320.87
5.5.250.0100.07320.69
5.5.240.3630.03320.06
5.4.450.4570.04019.42
5.4.440.4230.04319.45
5.4.430.4400.03719.38
5.4.420.4300.03319.11
5.4.410.4030.03719.32
5.4.400.3370.04719.07
5.4.390.3400.04319.06
5.4.380.2800.03018.88
5.4.370.2800.03719.13
5.4.360.3200.04019.13
5.4.350.3600.04019.24
5.4.340.2900.05019.18
5.4.320.4000.03719.22
5.4.310.3770.04019.24
5.4.300.4270.04318.80
5.4.290.3470.04019.09
5.4.280.3530.03718.88
5.4.270.3470.03719.13
5.4.260.3900.03019.25
5.4.250.4170.04019.08
5.4.240.4030.04018.91
5.4.230.4200.04019.24
5.4.220.4600.03319.04
5.4.210.4130.04018.92
5.4.200.4430.03719.05
5.4.190.3770.04019.08
5.4.180.4270.04319.23
5.4.170.3200.04019.15
5.4.160.3600.03718.79
5.4.150.4030.04019.06
5.4.140.4470.03716.20
5.4.130.3530.02316.31
5.4.120.3600.04016.37
5.4.110.3400.04016.38
5.4.100.3430.03316.19
5.4.90.4100.03016.43
5.4.80.3900.04016.41
5.4.70.3600.04016.29
5.4.60.3670.04016.18
5.4.50.3800.03016.36
5.4.40.3770.03316.03
5.4.30.3730.03716.35
5.4.20.3500.03316.31
5.4.10.3400.04016.04
5.4.00.4700.02715.73
5.3.290.3870.03314.50
5.3.280.4400.03314.45
5.3.270.3670.03314.55
5.3.260.3770.04014.44
5.3.250.3600.02314.63
5.3.240.3970.04714.54
5.3.230.3800.03714.52
5.3.220.4570.03014.41
5.3.210.3730.03714.40
5.3.200.3770.04014.65
5.3.190.3470.04314.40
5.3.180.4030.04014.44
5.3.170.3700.03714.61
5.3.160.3670.03014.39
5.3.150.3600.04014.42
5.3.140.4000.04014.60
5.3.130.3800.03314.38
5.3.120.3730.04314.59
5.3.110.4100.04714.59
5.3.100.4000.04013.86
5.3.90.3770.03013.96
5.3.80.3470.03314.06
5.3.70.3800.03713.81
5.3.60.4770.03014.04
5.3.50.3530.03013.71
5.3.40.3670.03013.96
5.3.30.3830.03013.74
5.3.20.4070.03713.59
5.3.10.3830.03013.50
5.3.00.3470.03313.57
5.2.170.2900.03012.13
5.2.160.3000.02712.13
5.2.150.2630.02712.13
5.2.140.2870.03012.13
5.2.130.3270.03012.13
5.2.120.3170.02012.13
5.2.110.3330.03312.13
5.2.100.3430.02312.13
5.2.90.3830.02312.13
5.2.80.3730.03312.13
5.2.70.3630.03312.13
5.2.60.4530.01712.13
5.2.50.3270.03312.13
5.2.40.3070.03012.13
5.2.30.3170.02312.13
5.2.20.3070.02712.13
5.2.10.3130.03012.13
5.2.00.2470.03012.13
5.1.60.2400.02712.13
5.1.50.2230.02712.13
5.1.40.2300.02312.13
5.1.30.2070.02312.13
5.1.20.2330.02712.13
5.1.10.2300.02312.13
5.1.00.2670.03312.13
5.0.50.1130.02012.13
5.0.40.1170.01712.13
5.0.30.1130.03312.13
5.0.20.1370.02012.13
5.0.10.1170.02012.13
5.0.00.0970.02712.13
4.4.90.1370.01712.13
4.4.80.1700.01712.13
4.4.70.1370.01712.13
4.4.60.1670.02012.13
4.4.50.1370.01712.13
4.4.40.1170.02312.13
4.4.30.0870.01712.13
4.4.20.1170.01312.13
4.4.10.1470.01712.13
4.4.00.0870.02712.13
4.3.110.0870.02012.13
4.3.100.1130.01712.13
4.3.90.1170.01312.13
4.3.80.1100.02712.13
4.3.70.1130.01712.13
4.3.60.0900.01312.13
4.3.50.0870.01712.13
4.3.40.1130.02312.13
4.3.30.0570.01712.13
4.3.20.0800.02012.13
4.3.10.0730.01712.13
4.3.00.0830.02712.13

preferences:
35.1 ms | 401 KiB | 5 Q