3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = '12345'; $c = ''; for($i = 0; isset($a{$i}); $i++) { $c = $a{$i} . $c; } var_dump($c);

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)
8.3.60.0110.00418.56
8.3.50.0080.01321.92
8.3.40.0150.00418.61
8.3.30.0080.00518.84
8.3.20.0030.00520.26
8.3.10.0080.00020.53
8.3.00.0030.00519.25
8.2.180.0070.00718.16
8.2.170.0070.00722.96
8.2.160.0130.00020.48
8.2.150.0050.00224.18
8.2.140.0040.00424.66
8.2.130.0000.00726.16
8.2.120.0040.00422.11
8.2.110.0130.00722.27
8.2.100.0120.00017.53
8.2.90.0000.00719.09
8.2.80.0040.00417.97
8.2.70.0040.00417.38
8.2.60.0000.00817.91
8.2.50.0030.00518.07
8.2.40.0000.00818.16
8.2.30.0040.00419.43
8.2.20.0040.00417.55
8.2.10.0030.00517.90
8.2.00.0040.00417.60
8.1.280.0070.01425.92
8.1.270.0040.00422.14
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0090.01223.70
8.1.230.0040.00719.07
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0030.00717.23
8.1.190.0030.00517.00
8.1.180.0000.00718.10
8.1.170.0060.00318.46
8.1.160.0000.00721.95
8.1.150.0040.00418.80
8.1.140.0040.00417.23
8.1.130.0000.00717.80
8.1.120.0000.00717.34
8.1.110.0040.00417.28
8.1.100.0050.00317.25
8.1.90.0030.00417.20
8.1.80.0000.00717.25
8.1.70.0030.00317.27
8.1.60.0060.00317.45
8.1.50.0000.00717.40
8.1.40.0030.00617.39
8.1.30.0040.00417.51
8.1.20.0070.00017.58
8.1.10.0040.00417.21
8.1.00.0000.00717.24
8.0.300.0080.00018.77
8.0.290.0040.00416.63
8.0.280.0030.00318.32
8.0.270.0000.00816.98
8.0.260.0070.00017.12
8.0.250.0030.00316.78
8.0.240.0080.00016.89
8.0.230.0000.00716.95
8.0.220.0030.00316.86
8.0.210.0070.00016.69
8.0.200.0030.00316.89
8.0.190.0000.00716.78
8.0.180.0040.00416.75
8.0.170.0030.00616.73
8.0.160.0000.00716.82
8.0.150.0030.00316.70
8.0.140.0000.00716.80
8.0.130.0000.00813.26
8.0.120.0040.00416.79
8.0.110.0040.00416.66
8.0.100.0040.00416.70
8.0.90.0000.00716.67
8.0.80.0090.00916.80
8.0.70.0030.00616.71
8.0.60.0000.00816.86
8.0.50.0050.00316.86
8.0.30.0090.00916.99
8.0.20.0080.01017.40
8.0.10.0040.00416.83
8.0.00.0080.01116.70
7.4.330.0000.00615.08
7.4.320.0030.00316.59
7.4.300.0000.00616.42
7.4.290.0000.00716.64
7.4.280.0040.00416.49
7.4.270.0000.00616.60
7.4.260.0000.00816.55
7.4.250.0040.00416.52
7.4.240.0060.00116.54
7.4.230.0030.00316.56
7.4.220.0070.01016.38
7.4.210.0040.01016.55
7.4.200.0000.00716.64
7.4.160.0090.00616.65
7.4.150.0120.00717.40
7.4.140.0070.01017.86
7.4.130.0100.00716.41
7.4.120.0110.00616.47
7.4.110.0110.01116.63
7.4.100.0040.01816.43
7.4.90.0120.00616.59
7.4.80.0090.00919.39
7.4.70.0130.00316.25
7.4.60.0060.01116.50
7.4.50.0040.00416.37
7.4.40.0090.00916.70
7.4.30.0140.00716.57
7.4.00.0060.00814.85
7.3.330.0030.00313.09
7.3.320.0000.00513.10
7.3.310.0030.00316.21
7.3.300.0070.00016.29
7.3.290.0220.00016.30
7.3.280.0070.00916.32
7.3.270.0150.00317.40
7.3.260.0110.01416.63
7.3.250.0090.00816.42
7.3.240.0060.01516.36
7.3.230.0090.00616.39
7.3.210.0120.00616.40
7.3.200.0090.00919.39
7.3.190.0140.00716.45
7.3.180.0030.01316.38
7.3.170.0070.01116.37
7.3.160.0040.01216.59
7.3.120.0040.01414.81
7.3.110.0100.01014.57
7.3.100.0100.00614.96
7.3.90.0110.00414.79
7.3.80.0030.01015.02
7.3.70.0090.00914.83
7.3.60.0040.01114.97
7.3.50.0080.00814.86
7.3.40.0060.00614.80
7.3.30.0030.00915.05
7.3.20.0070.01016.73
7.3.10.0040.01116.35
7.3.00.0030.01016.62
7.2.330.0060.01316.64
7.2.320.0080.00916.50
7.2.310.0120.00916.48
7.2.300.0100.00616.66
7.2.290.0120.00916.70
7.2.250.0060.00915.03
7.2.240.0060.01315.00
7.2.230.0060.01214.83
7.2.220.0060.00615.16
7.2.210.0100.00315.07
7.2.200.0060.01315.08
7.2.190.0060.00614.77
7.2.180.0080.00415.06
7.2.170.0060.00314.65
7.2.00.0030.01319.30
7.1.330.0000.01215.93
7.1.320.0070.00715.76
7.1.310.0100.00715.57
7.1.300.0060.01015.70
7.1.290.0070.01015.88
7.1.280.0060.00815.95
7.1.270.0040.01515.96
7.1.260.0070.00715.96
7.1.200.0030.00915.99
7.1.100.0000.01518.21
7.1.70.0070.00317.13
7.1.60.0000.01117.32
7.1.50.0090.00316.93
7.1.00.0100.07022.31
7.0.200.0030.01416.46
7.0.140.0100.06722.10
7.0.60.0100.08319.78
7.0.50.0030.04317.86
7.0.40.0030.04320.07
7.0.30.0300.07320.18
7.0.20.0230.06320.19
7.0.10.0130.04320.17
7.0.00.0170.07320.32
5.6.280.0030.07320.77
5.6.210.0070.04720.66
5.6.200.0030.06018.22
5.6.190.0130.04320.77
5.6.180.0170.04020.44
5.6.170.0170.04020.49
5.6.160.0030.08320.40
5.6.150.0030.05018.21
5.6.140.0070.08018.15
5.6.130.0000.05018.21
5.6.120.0070.04721.14
5.6.110.0300.04720.99
5.6.100.0070.08321.13
5.6.90.0030.09020.99
5.6.80.0100.07320.39
5.6.70.3130.03320.36
5.5.350.0030.08320.38
5.5.340.0000.04317.99
5.5.330.0130.04320.27
5.5.320.0500.06320.29
5.5.310.0330.02720.17
5.5.300.0030.07318.00
5.5.290.0030.08017.98
5.5.280.0100.04320.65
5.5.270.0200.07020.87
5.5.260.0000.05020.86
5.5.250.0100.06320.48
5.5.240.0100.08020.26
5.4.450.0470.04719.45
5.4.440.0370.04019.45
5.4.430.0400.03319.45
5.4.420.0330.02719.45
5.4.410.0300.04019.45
5.4.400.0270.03719.45
5.4.390.0400.03719.45
5.4.380.0330.05318.68
5.4.370.0330.05318.46
5.4.360.0370.05318.68
5.4.350.0600.06018.50
5.4.340.0430.05018.50
5.4.320.0090.03712.46
5.4.310.0090.05212.45
5.4.300.0070.04112.46
5.4.290.0070.03912.45
5.4.280.0070.03412.35
5.4.270.0040.04312.35
5.4.260.0040.05012.35
5.4.250.0060.04312.35
5.4.240.0060.04612.35
5.4.230.0090.03912.34
5.4.220.0030.03912.34
5.4.210.0120.04012.34
5.4.200.0070.04312.34
5.4.190.0040.05512.34
5.4.180.0030.04112.34
5.4.170.0050.04212.35
5.4.160.0090.04012.34
5.4.150.0070.04212.34
5.4.140.0070.03612.03
5.4.130.0040.04812.01
5.4.120.0100.04311.97
5.4.110.0020.03911.96
5.4.100.0020.05311.97
5.4.90.0070.03411.96
5.4.80.0060.04411.96
5.4.70.0030.03611.96
5.4.60.0070.04011.96
5.4.50.0050.03511.96
5.4.40.0040.04111.95
5.4.30.0050.03811.95
5.4.20.0080.04311.95
5.4.10.0060.03211.95
5.4.00.0060.03911.44
5.3.290.0100.04412.80
5.3.280.0070.04112.71
5.3.270.0080.03812.72
5.3.260.0070.03612.72
5.3.250.0050.04212.72
5.3.240.0070.04012.72
5.3.230.0060.04512.71
5.3.220.0030.03912.68
5.3.210.0080.04412.68
5.3.200.0100.03512.68
5.3.190.0040.04312.68
5.3.180.0090.04012.67
5.3.170.0040.04112.67
5.3.160.0040.03812.67
5.3.150.0070.03712.68
5.3.140.0030.03712.66
5.3.130.0090.03412.66
5.3.120.0040.04212.66
5.3.110.0040.04112.66
5.3.100.0090.04012.12
5.3.90.0050.04912.08
5.3.80.0060.04112.08
5.3.70.0060.03912.08
5.3.60.0060.03512.07
5.3.50.0080.03412.00
5.3.40.0080.03512.00
5.3.30.0060.03711.94
5.3.20.0040.03511.72
5.3.10.0050.03411.69
5.3.00.0070.03811.68
5.2.170.0060.0339.18
5.2.160.0050.0379.18
5.2.150.0070.0279.18
5.2.140.0060.0329.18
5.2.130.0030.0309.14
5.2.120.0060.0269.13
5.2.110.0030.0299.14
5.2.100.0070.0269.14
5.2.90.0020.0389.14
5.2.80.0030.0319.13
5.2.70.0030.0349.13
5.2.60.0060.0299.09
5.2.50.0040.0299.05
5.2.40.0040.0319.03
5.2.30.0040.0299.01
5.2.20.0040.0289.00
5.2.10.0030.0288.91
5.2.00.0030.0298.77
5.1.60.0060.0218.06
5.1.50.0030.0248.05
5.1.40.0090.0188.04
5.1.30.0040.0258.39
5.1.20.0070.0248.41
5.1.10.0050.0248.13
5.1.00.0060.0288.13
5.0.50.0010.0276.62
5.0.40.0040.0176.48
5.0.30.0040.0296.29
5.0.20.0060.0256.26
5.0.10.0070.0186.24
5.0.00.0020.0376.23
4.4.90.0040.0134.78
4.4.80.0010.0164.75
4.4.70.0020.0234.76
4.4.60.0050.0134.75
4.4.50.0020.0154.77
4.4.40.0040.0234.71
4.4.30.0020.0164.76
4.4.20.0020.0164.85
4.4.10.0020.0164.85
4.4.00.0030.0244.76
4.3.110.0020.0164.67
4.3.100.0010.0164.66
4.3.90.0020.0184.63
4.3.80.0030.0234.58
4.3.70.0050.0274.63
4.3.60.0030.0154.63
4.3.50.0030.0154.63
4.3.40.0010.0254.54
4.3.30.0020.0163.28
4.3.20.0010.0173.26
4.3.10.0010.0163.21
4.3.00.0070.01719.45

preferences:
42.06 ms | 401 KiB | 5 Q