3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'str1nk'; $size = strlen($str); echo $size; exit; for($i = $size; $i <= 0; $i--) echo $str{$i};

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)
8.3.60.0070.01018.30
8.3.50.0120.01221.92
8.3.40.0030.01018.57
8.3.30.0070.00718.97
8.3.20.0040.00420.04
8.3.10.0040.00420.45
8.3.00.0050.00517.38
8.2.180.0140.00716.50
8.2.170.0180.00422.96
8.2.160.0110.00420.45
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0070.00026.16
8.2.120.0050.00222.22
8.2.110.0060.00322.14
8.2.100.0040.00817.59
8.2.90.0030.00519.09
8.2.80.0060.00317.97
8.2.70.0030.00517.36
8.2.60.0050.00317.68
8.2.50.0000.00818.07
8.2.40.0040.00418.03
8.2.30.0050.00219.43
8.2.20.0000.00817.56
8.2.10.0050.00317.92
8.2.00.0040.00417.54
8.1.280.0110.00325.92
8.1.270.0080.00023.93
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0000.01023.82
8.1.230.0050.00519.09
8.1.220.0080.00017.74
8.1.210.0000.00918.77
8.1.200.0060.00317.10
8.1.190.0000.00817.10
8.1.180.0040.00418.10
8.1.170.0050.00318.42
8.1.160.0050.00321.99
8.1.150.0000.00718.71
8.1.140.0050.00317.36
8.1.130.0050.00317.80
8.1.120.0030.00317.36
8.1.110.0080.00017.34
8.1.100.0070.00017.36
8.1.90.0070.00317.38
8.1.80.0050.00317.27
8.1.70.0000.00717.20
8.1.60.0000.00817.44
8.1.50.0000.00817.29
8.1.40.0000.00717.35
8.1.30.0030.00617.47
8.1.20.0000.00717.48
8.1.10.0000.00717.23
8.1.00.0060.00317.24
8.0.300.0040.00418.77
8.0.290.0050.00216.63
8.0.280.0000.00718.25
8.0.270.0000.00717.15
8.0.260.0000.00617.10
8.0.250.0030.00316.72
8.0.240.0000.00716.90
8.0.230.0030.00316.81
8.0.220.0030.00316.88
8.0.210.0030.00316.88
8.0.200.0050.00316.88
8.0.190.0000.00816.71
8.0.180.0050.00216.81
8.0.170.0000.00716.70
8.0.160.0040.00416.87
8.0.150.0040.00416.67
8.0.140.0080.00016.70
8.0.130.0000.00613.27
8.0.120.0000.00816.76
8.0.110.0050.00216.65
8.0.100.0030.00516.68
8.0.90.0000.00716.82
8.0.80.0030.01216.81
8.0.70.0040.00416.73
8.0.60.0000.00716.73
8.0.50.0070.00016.84
8.0.30.0110.00816.93
8.0.20.0090.01317.40
8.0.10.0040.00417.01
8.0.00.0090.00916.66
7.4.330.0000.00515.00
7.4.320.0060.00016.48
7.4.300.0060.00016.35
7.4.290.0030.00316.54
7.4.280.0030.00516.46
7.4.270.0040.00416.59
7.4.260.0100.00016.51
7.4.250.0000.00716.41
7.4.240.0050.00316.47
7.4.230.0040.00416.34
7.4.220.0040.01416.38
7.4.210.0040.01116.54
7.4.200.0030.00316.51
7.4.160.0120.00616.26
7.4.150.0150.00317.40
7.4.140.0070.01017.86
7.4.130.0110.00516.60
7.4.120.0080.01016.58
7.4.110.0100.01316.47
7.4.100.0070.01016.35
7.4.90.0170.00016.60
7.4.80.0110.00716.45
7.4.70.0070.01716.43
7.4.60.0150.00016.30
7.4.50.0000.00816.58
7.4.40.0090.00616.63
7.4.30.0140.00316.50
7.4.00.0100.00314.88
7.3.330.0030.00313.25
7.3.320.0000.00513.09
7.3.310.0000.00716.25
7.3.300.0030.00316.17
7.3.290.0060.01216.35
7.3.280.0070.01016.36
7.3.270.0040.01517.40
7.3.260.0080.00916.39
7.3.250.0060.01216.44
7.3.240.0030.01316.41
7.3.230.0100.00716.58
7.3.210.0060.01816.24
7.3.200.0120.00619.39
7.3.190.0100.00616.36
7.3.180.0120.00616.17
7.3.170.0130.00616.50
7.3.160.0060.01216.25
7.3.120.0040.01414.86
7.3.110.0090.00614.83
7.3.100.0030.01214.48
7.3.90.0150.00014.61
7.3.80.0070.00714.81
7.3.70.0090.00314.90
7.3.60.0030.01314.39
7.3.50.0040.01114.91
7.3.40.0080.00814.80
7.3.30.0070.01014.77
7.3.20.0000.01516.51
7.3.10.0060.00816.41
7.3.00.0100.00716.22
7.2.330.0070.01016.38
7.2.320.0100.01316.56
7.2.310.0110.00816.28
7.2.300.0160.00616.61
7.2.290.0120.00916.48
7.2.240.0030.01415.13
7.2.230.0070.01014.77
7.2.220.0030.01114.95
7.2.210.0100.00714.68
7.2.200.0100.00615.08
7.2.190.0040.01115.02
7.2.180.0030.01314.96
7.2.170.0060.00915.01
7.2.160.0100.00714.80
7.2.150.0100.00616.86
7.2.140.0100.00616.53
7.2.130.0080.00516.66
7.2.120.0070.00916.66
7.2.110.0060.00616.52
7.2.100.0050.01116.76
7.2.90.0090.00416.56
7.2.80.0050.01116.36
7.2.70.0050.00916.48
7.2.60.0060.00816.61
7.2.50.0060.01016.62
7.2.40.0080.00816.75
7.2.30.0060.00716.61
7.2.20.0130.00416.71
7.2.10.0100.00216.86
7.2.00.0030.01217.52
7.1.330.0000.01215.73
7.1.320.0070.00315.64
7.1.310.0000.01215.77
7.1.300.0030.01015.78
7.1.290.0040.00815.82
7.1.280.0030.00915.85
7.1.270.0030.01415.63
7.1.260.0030.00915.81
7.1.250.0070.00715.62
7.1.200.0040.00715.44
7.1.100.0230.01018.02
7.1.70.0040.00417.28
7.1.60.0070.01619.61
7.1.50.0110.01416.78
7.1.00.0070.07322.43
7.0.200.0060.00616.70
7.0.140.0070.06322.21
7.0.60.0200.05019.97
7.0.50.0100.08017.78
7.0.40.0030.09320.24
7.0.30.0270.04720.20
7.0.20.0200.04020.09
7.0.10.0070.08720.20
7.0.00.0230.07020.16
5.6.280.0000.07321.02
5.6.210.0170.06720.76
5.6.200.0100.05718.17
5.6.190.0170.04320.41
5.6.180.0200.04720.77
5.6.170.0270.07720.44
5.6.160.0130.07720.50
5.6.150.0000.04018.14
5.6.140.0070.06718.20
5.6.130.0030.05318.23
5.6.120.0030.05321.00
5.6.110.0100.07720.96
5.6.100.0070.06020.96
5.6.90.0000.04720.96
5.6.80.0070.08020.37
5.5.350.0170.03720.41
5.5.340.0070.04017.96
5.5.330.0030.04020.19
5.5.320.0400.04320.31
5.5.310.0270.04020.34
5.5.300.0030.08017.91
5.5.290.0100.08017.91
5.5.280.0130.07720.87
5.5.270.0070.05020.76
5.5.260.0030.04020.86
5.5.250.0070.04320.46
5.5.240.0070.07320.24
5.4.450.0370.05019.41
5.4.440.0300.04019.45
5.4.430.0230.04319.24
5.4.420.0330.04019.25
5.4.410.0170.04719.28
5.4.400.0300.03018.81
5.4.390.0270.05019.13
5.4.380.0300.05018.46
5.4.370.0470.04718.70
5.4.360.0530.05718.68
5.4.350.0270.06018.46
5.4.340.0230.05718.64
5.4.320.0090.03212.46
5.4.310.0090.03612.45
5.4.300.0060.03712.46
5.4.290.0060.04312.45
5.4.280.0060.03512.35
5.4.270.0040.03612.35
5.4.260.0040.03912.35
5.4.250.0040.04612.35
5.4.240.0080.03112.35
5.4.230.0040.03712.34
5.4.220.0070.03912.34
5.4.210.0060.03712.34
5.4.200.0060.03512.34
5.4.190.0020.03812.34
5.4.180.0040.03712.34
5.4.170.0060.03412.35
5.4.160.0040.04612.34
5.4.150.0050.03512.34
5.4.140.0070.03412.02
5.4.130.0080.03812.02
5.4.120.0070.03811.97
5.4.110.0080.03711.96
5.4.100.0070.03411.97
5.4.90.0060.03911.96
5.4.80.0030.04011.96
5.4.70.0050.03411.96
5.4.60.0070.03211.96
5.4.50.0060.03411.96
5.4.40.0040.03611.95
5.4.30.0050.03511.95
5.4.20.0050.03611.95
5.4.10.0040.03511.95
5.4.00.0060.03511.44
5.3.290.0050.04012.80
5.3.280.0070.03612.71
5.3.270.0040.04112.72
5.3.260.0050.03912.72
5.3.250.0060.03712.71
5.3.240.0040.03812.72
5.3.230.0050.03812.71
5.3.220.0050.03912.68
5.3.210.0050.04012.68
5.3.200.0070.03512.68
5.3.190.0050.03812.68
5.3.180.0080.03412.68
5.3.170.0080.03312.66
5.3.160.0070.03712.67
5.3.150.0040.03912.67
5.3.140.0070.04012.66
5.3.130.0050.04312.66
5.3.120.0080.03612.66
5.3.110.0090.03412.66
5.3.100.0040.03812.12
5.3.90.0040.03612.09
5.3.80.0090.04112.07
5.3.70.0040.03812.07
5.3.60.0090.04212.07
5.3.50.0040.03912.00
5.3.40.0070.03412.00
5.3.30.0080.03311.95
5.3.20.0050.03511.73
5.3.10.0090.03011.69
5.3.00.0050.03611.68
5.2.170.0060.0289.18
5.2.160.0060.0279.18
5.2.150.0010.0339.18
5.2.140.0070.0279.18
5.2.130.0040.0299.14
5.2.120.0050.0359.13
5.2.110.0030.0299.14
5.2.100.0030.0289.14
5.2.90.0090.0309.14
5.2.80.0030.0349.14
5.2.70.0050.0299.14
5.2.60.0060.0279.09
5.2.50.0040.0309.06
5.2.40.0060.0309.03
5.2.30.0050.0289.01
5.2.20.0050.0269.00
5.2.10.0060.0318.93
5.2.00.0030.0298.79
5.1.60.0010.0268.08
5.1.50.0030.0258.07
5.1.40.0030.0258.06
5.1.30.0060.0298.41
5.1.20.0040.0258.43
5.1.10.0030.0288.15
5.1.00.0050.0248.15
5.0.50.0040.0206.63
5.0.40.0040.0226.49
5.0.30.0040.0366.31
5.0.20.0050.0186.27
5.0.10.0040.0196.25
5.0.00.0060.0286.24
4.4.90.0020.0214.78
4.4.80.0070.0184.76
4.4.70.0040.0214.75
4.4.60.0130.0274.75
4.4.50.0040.0154.77
4.4.40.0030.0254.71
4.4.30.0010.0174.76
4.4.20.0020.0164.84
4.4.10.0030.0154.85
4.4.00.0030.0244.76
4.3.110.0050.0204.67
4.3.100.0000.0184.66
4.3.90.0030.0144.63
4.3.80.0040.0234.58
4.3.70.0020.0154.63
4.3.60.0040.0134.63
4.3.50.0050.0154.63
4.3.40.0040.0224.53
4.3.30.0020.0163.29
4.3.20.0030.0163.27
4.3.10.0000.0173.23
4.3.00.0000.02016.72

preferences:
51.13 ms | 401 KiB | 5 Q