3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'abcdef'; var_dump($string{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)
8.3.60.0070.01418.30
8.3.50.0050.01022.04
8.3.40.0060.00918.67
8.3.30.0070.00719.01
8.3.20.0080.00020.09
8.3.10.0080.00021.79
8.3.00.0070.00022.45
8.2.180.0090.01216.38
8.2.170.0070.00722.96
8.2.160.0140.00319.04
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0040.00419.13
8.2.110.0000.00922.15
8.2.100.0070.00419.51
8.2.90.0040.00418.92
8.2.80.0000.00817.97
8.2.70.0040.00717.38
8.2.60.0030.00617.80
8.2.50.0030.00618.07
8.2.40.0050.00318.09
8.2.30.0040.00817.98
8.2.20.0000.00717.63
8.2.10.0000.00917.43
8.2.00.0050.00317.41
8.1.280.0100.00325.92
8.1.270.0040.00422.19
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0040.00423.86
8.1.230.0040.00819.22
8.1.220.0050.00317.74
8.1.210.0050.00318.77
8.1.200.0040.00717.23
8.1.190.0040.00417.15
8.1.180.0060.00318.10
8.1.170.0000.00818.66
8.1.160.0040.00421.94
8.1.150.0040.00418.51
8.1.140.0040.00417.31
8.1.130.0020.00517.66
8.1.120.0070.00017.33
8.1.110.0070.00017.21
8.1.100.0000.00717.33
8.1.90.0040.00417.27
8.1.80.0040.00417.25
8.1.70.0070.00017.21
8.1.60.0030.00617.40
8.1.50.0040.00417.28
8.1.40.0070.00017.28
8.1.30.0020.00517.46
8.1.20.0040.00417.47
8.1.10.0080.00017.36
8.1.00.0080.00017.36
8.0.300.0080.00018.77
8.0.290.0080.00016.80
8.0.280.0000.00718.22
8.0.270.0030.00317.13
8.0.260.0060.00016.67
8.0.250.0000.00816.93
8.0.240.0030.00316.82
8.0.230.0000.00716.95
8.0.220.0000.00716.82
8.0.210.0000.00616.77
8.0.200.0060.00016.74
8.0.190.0000.00716.77
8.0.180.0000.00816.91
8.0.170.0000.00816.75
8.0.160.0070.00016.88
8.0.150.0000.00716.66
8.0.140.0040.00316.74
8.0.130.0060.00013.18
8.0.120.0040.00416.76
8.0.110.0070.00016.86
8.0.100.0000.00816.79
8.0.90.0060.00316.86
8.0.80.0080.00816.78
8.0.70.0040.00416.68
8.0.60.0040.00416.69
8.0.50.0000.00716.63
8.0.30.0140.00517.04
8.0.20.0110.00717.40
8.0.10.0000.00816.81
8.0.00.0100.01116.57
7.4.330.0070.00015.00
7.4.320.0030.00316.45
7.4.300.0030.00316.32
7.4.290.0070.00016.44
7.4.280.0060.00016.57
7.4.270.0070.00016.56
7.4.260.0040.00416.37
7.4.250.0040.00416.41
7.4.240.0000.00716.50
7.4.230.0070.00016.54
7.4.220.0030.01416.56
7.4.210.0100.00616.52
7.4.200.0030.00316.32
7.4.190.0000.00716.59
7.4.160.0070.01016.25
7.4.150.0090.00617.40
7.4.140.0070.01217.86
7.4.130.0080.01116.61
7.4.120.0090.01016.53
7.4.110.0050.01116.52
7.4.100.0090.00916.49
7.4.90.0040.01316.63
7.4.80.0220.00919.39
7.4.70.0110.00616.54
7.4.60.0070.01016.29
7.4.50.0040.00416.19
7.4.40.0060.00822.77
7.4.30.0060.01116.37
7.4.00.0070.01014.84
7.3.330.0050.00013.00
7.3.320.0020.00213.10
7.3.310.0060.00316.04
7.3.300.0000.00716.21
7.3.290.0180.00716.24
7.3.280.0110.00616.23
7.3.270.0090.00917.40
7.3.260.0080.00816.28
7.3.250.0160.00816.52
7.3.240.0100.00716.42
7.3.230.0110.01416.57
7.3.210.0030.01316.26
7.3.200.0110.00619.39
7.3.190.0110.00616.26
7.3.180.0030.01316.17
7.3.170.0090.00616.33
7.3.160.0040.01216.22
7.3.120.0060.00914.96
7.3.10.0150.00516.00
7.3.00.0260.00716.39
7.2.330.0150.00316.41
7.2.320.0070.01116.50
7.2.310.0070.01016.56
7.2.300.0120.00316.54
7.2.290.0100.01716.59
7.2.130.0190.00816.48
7.2.120.0190.00916.85
7.2.110.0140.01016.46
7.2.100.0120.00616.25
7.2.90.0100.01416.20
7.2.80.0170.00016.17
7.2.70.0090.00516.31
7.2.60.0170.00015.85
7.2.50.0130.01016.14
7.2.40.0220.00716.61
7.2.30.0130.00316.14
7.2.20.0070.01416.45
7.2.10.0120.01216.50
7.2.00.0100.00717.79
7.1.250.0100.01015.36
7.1.100.0030.00617.88
7.1.70.0050.00216.99
7.1.60.0100.01319.82
7.1.50.0090.00616.91
7.1.00.0030.07322.51
7.0.200.0070.00716.66
7.0.140.0100.06322.00
7.0.110.0170.07019.86
7.0.100.0100.04319.94
7.0.90.0000.05019.92
7.0.80.0070.03720.05
7.0.70.0000.04719.91
7.0.60.0000.04320.03
7.0.50.0100.03720.02
7.0.40.0030.03319.75
7.0.30.0070.04019.86
7.0.20.0000.04319.59
7.0.10.0000.05019.77
7.0.00.0030.03719.69
5.6.280.0000.07721.07
5.6.260.0030.06020.59
5.6.250.0070.03720.73
5.6.240.0030.04020.48
5.6.230.0030.04020.71
5.6.220.0030.03720.59
5.6.210.0030.04020.73
5.6.200.0100.04020.63
5.6.190.0100.03720.58
5.6.180.0030.04020.70
5.6.170.0100.02720.70
5.6.160.0030.04020.62
5.6.150.0030.03720.62
5.6.140.0030.04020.61
5.6.130.0070.03020.61
5.6.120.0030.03320.63
5.6.110.0030.04720.63
5.6.100.0100.04720.60
5.6.90.0000.07020.60
5.6.80.0100.03719.94
5.6.70.0030.04320.02
5.6.60.0030.03720.02
5.6.50.0030.04719.93
5.6.40.0070.03720.01
5.6.30.0130.07319.91
5.6.20.0100.05719.99
5.6.10.0030.06019.89
5.6.00.0030.04319.94
5.5.380.0030.04017.64
5.5.370.0030.04017.52
5.5.360.0000.04317.48
5.5.350.0030.04017.43
5.5.340.0100.03718.25
5.5.330.0030.06017.77
5.5.320.0000.04318.13
5.5.310.0000.04318.25
5.5.300.0070.03718.02
5.5.290.0100.03317.86
5.5.280.0070.03718.10
5.5.270.0070.03317.84
5.5.260.0100.06717.75
5.5.250.0000.06017.67
5.5.240.0030.03717.23
5.5.230.0030.07017.50
5.5.220.0030.03317.62
5.5.210.0000.04317.27
5.5.200.0070.05317.51
5.5.190.0000.04717.20
5.5.180.0070.04017.48
5.5.160.0000.04017.47
5.5.150.0070.03717.52
5.5.140.0000.04017.44
5.5.130.0030.03717.20
5.5.120.0070.05017.46
5.5.110.0030.05017.52
5.5.100.0100.07717.50
5.5.90.0030.04717.41
5.5.80.0030.05017.16
5.5.70.0030.07317.37
5.5.60.0070.06717.09
5.5.50.0100.03017.10
5.5.40.0070.06017.36
5.5.30.0100.05317.33
5.5.20.0070.03717.48
5.5.10.0030.03717.49
5.5.00.0030.06717.13
5.4.450.0030.04019.36
5.4.440.0070.06319.31
5.4.430.0000.03719.45
5.4.420.0000.03719.27
5.4.410.0000.04719.37
5.4.400.0130.04719.03
5.4.390.0100.05719.08
5.4.380.0000.04718.93
5.4.370.0070.07318.98
5.4.360.0170.06019.03
5.4.350.0030.04019.25
5.4.340.0070.06019.16
5.4.320.0070.06719.27
5.4.310.0000.04018.93
5.4.300.0070.07719.09
5.4.290.0070.07318.95
5.4.280.0130.03719.09
5.4.270.0030.04318.95
5.4.260.0070.06718.90
5.4.250.0070.03319.00
5.4.240.0070.03718.96
5.4.230.0130.05019.07
5.4.220.0000.08019.24
5.4.210.0100.05319.00
5.4.200.0070.03319.00
5.4.190.0100.06018.99
5.4.180.0030.06018.94
5.4.170.0030.06319.15
5.4.160.0030.06318.96
5.4.150.0070.08319.25
5.4.140.0000.04016.47
5.4.130.0000.03716.25
5.4.120.0030.03316.46
5.4.110.0130.08016.18
5.4.100.0030.04016.40
5.4.90.0030.06016.30
5.4.80.0170.06016.26
5.4.70.0030.05716.36
5.4.60.0130.06716.06
5.4.50.0030.03316.21
5.4.40.0000.06716.55
5.4.30.0000.03316.45
5.4.20.0000.03716.36
5.4.10.0070.03716.25
5.4.00.0070.07715.65
5.3.290.0030.07014.57
5.3.280.0030.07314.60
5.3.270.0030.06014.45
5.3.260.0070.08014.68
5.3.250.0130.07314.45
5.3.240.0030.07014.45
5.3.230.0000.06714.61
5.3.220.0070.03014.48
5.3.210.0070.05014.35
5.3.200.0200.06014.40
5.3.190.0070.07714.46
5.3.180.0130.06014.46
5.3.170.0100.04314.39
5.3.160.0070.03714.38
5.3.150.0030.04014.41
5.3.140.0070.07714.45
5.3.130.0100.07014.42
5.3.120.0130.06314.61
5.3.110.0030.07714.42
5.3.100.0000.03313.95
5.3.90.0030.04713.95
5.3.80.0100.06313.89
5.3.70.0100.05713.90
5.3.60.0130.06714.00
5.3.50.0000.05713.76
5.3.40.0070.07313.86
5.3.30.0170.04713.96
5.3.20.0030.03713.75
5.3.10.0030.07013.52
5.3.00.0100.02713.41
5.2.170.0000.06012.07
5.2.160.0030.05712.07
5.2.150.0000.03012.07
5.2.140.0200.04712.07
5.2.130.0030.05712.07
5.2.120.0000.05712.07
5.2.110.0000.05712.07
5.2.100.0030.05712.07
5.2.90.0070.03712.07
5.2.80.0100.04012.07
5.2.70.0100.02712.07
5.2.60.0070.03012.07
5.2.50.0000.06712.07
5.2.40.0100.02312.07
5.2.30.0100.04012.07
5.2.20.0030.05012.07
5.2.10.0070.04312.07
5.2.00.0100.04712.07
5.1.60.0030.03012.07
5.1.50.0030.05712.07
5.1.40.0030.04712.07
5.1.30.0070.04012.07
5.1.20.0030.05012.07
5.1.10.0170.03012.07
5.1.00.0030.02712.07
5.0.50.0000.04312.07
5.0.40.0070.02312.07
5.0.30.0000.06312.07
5.0.20.0000.02012.07
5.0.10.0000.02712.07
5.0.00.0000.04712.07
4.4.90.0070.03312.07
4.4.80.0030.01312.07
4.4.70.0070.03012.07
4.4.60.0000.02012.07
4.4.50.0030.01712.07
4.4.40.0000.04312.07
4.4.30.0030.03312.07
4.4.20.0000.02312.07
4.4.10.0030.02312.07
4.4.00.0000.04012.07
4.3.110.0000.02312.07
4.3.100.0030.02012.07
4.3.90.0030.02012.07
4.3.80.0000.04012.07
4.3.70.0000.01712.07
4.3.60.0000.01712.07
4.3.50.0030.01312.07
4.3.40.0000.04712.07
4.3.30.0000.02012.07
4.3.20.0000.03712.07
4.3.10.0000.01712.07
4.3.00.0000.03012.07

preferences:
48.67 ms | 401 KiB | 5 Q