3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = str_split('testing'); $i = 0; var_dump(implode('', array_map(function($val, $key) { return $key % 2 ? $val : null; }, $string, array_keys($string))));

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)
8.3.60.0110.00316.63
8.3.50.0130.00522.93
8.3.40.0070.00718.75
8.3.30.0100.00319.00
8.3.20.0040.00420.38
8.3.10.0080.00021.61
8.3.00.0060.00319.14
8.2.180.0120.00916.50
8.2.170.0100.01022.96
8.2.160.0100.00322.09
8.2.150.0070.00724.18
8.2.140.0040.00424.66
8.2.130.0160.00326.16
8.2.120.0040.00421.02
8.2.110.0030.00622.11
8.2.100.0110.00017.72
8.2.90.0040.00419.05
8.2.80.0040.00417.97
8.2.70.0050.00317.50
8.2.60.0030.00517.93
8.2.50.0090.00018.07
8.2.40.0000.00718.03
8.2.30.0080.00018.07
8.2.20.0080.00017.57
8.2.10.0070.00018.15
8.2.00.0000.00717.75
8.1.280.0070.00725.92
8.1.270.0040.00422.02
8.1.260.0030.00326.35
8.1.250.0040.00428.09
8.1.240.0060.00323.91
8.1.230.0070.00419.21
8.1.220.0030.00617.79
8.1.210.0060.00318.77
8.1.200.0050.00917.25
8.1.190.0000.00817.23
8.1.180.0000.00818.10
8.1.170.0030.00518.59
8.1.160.0080.00022.14
8.1.150.0000.00718.77
8.1.140.0000.00817.41
8.1.130.0060.00317.38
8.1.120.0000.00817.37
8.1.110.0000.00817.46
8.1.100.0050.00317.46
8.1.90.0000.00717.45
8.1.80.0030.00317.43
8.1.70.0030.00317.40
8.1.60.0060.00317.57
8.1.50.0000.00817.48
8.1.40.0030.00517.52
8.1.30.0000.00817.67
8.1.20.0050.00317.55
8.1.10.0040.00417.40
8.1.00.0000.00817.41
8.0.300.0070.00018.77
8.0.290.0040.00416.63
8.0.280.0000.00818.42
8.0.270.0060.00317.18
8.0.260.0030.00316.73
8.0.250.0030.00316.93
8.0.240.0030.00316.95
8.0.230.0040.00416.86
8.0.220.0000.00716.92
8.0.210.0030.00316.89
8.0.200.0000.00716.95
8.0.190.0080.00016.92
8.0.180.0050.00216.93
8.0.170.0070.00016.91
8.0.160.0030.00316.87
8.0.150.0000.00816.81
8.0.140.0000.00916.87
8.0.130.0030.00313.28
8.0.120.0060.00316.85
8.0.110.0000.00716.89
8.0.100.0040.00416.76
8.0.90.0080.00016.89
8.0.80.0080.00716.82
8.0.70.0040.00416.72
8.0.60.0070.00016.75
8.0.50.0030.00516.94
8.0.30.0080.01216.86
8.0.20.0120.00917.40
8.0.10.0030.00616.93
8.0.00.0080.01116.73
7.4.330.0020.00215.00
7.4.320.0000.00716.67
7.4.300.0040.00416.60
7.4.290.0070.00316.61
7.4.280.0000.00716.55
7.4.270.0030.00316.46
7.4.260.0030.00516.50
7.4.250.0000.00816.45
7.4.240.0010.00616.51
7.4.230.0000.00716.61
7.4.220.0110.00716.61
7.4.210.0090.00616.70
7.4.200.0040.00416.44
7.4.160.0040.01216.58
7.4.150.0070.01717.40
7.4.140.0090.00817.86
7.4.130.0140.01016.55
7.4.120.0110.00816.49
7.4.110.0210.00016.35
7.4.100.0090.00916.49
7.4.90.0100.00616.33
7.4.80.0170.00619.39
7.4.70.0130.00316.68
7.4.60.0120.00616.52
7.4.50.0000.00816.69
7.4.40.0120.00616.57
7.4.30.0080.00816.63
7.4.00.0060.00915.02
7.3.330.0030.00313.26
7.3.320.0050.00013.27
7.3.310.0000.00616.16
7.3.300.0030.00316.33
7.3.290.0060.00916.29
7.3.280.0070.01016.37
7.3.270.0070.01517.40
7.3.260.0080.00916.27
7.3.240.0070.01316.18
7.3.230.0030.01316.47
7.3.210.0070.01016.37
7.3.200.0030.01419.39
7.3.190.0070.01016.34
7.3.180.0030.01416.21
7.3.170.0040.01116.50
7.3.160.0060.00916.64
7.3.10.0150.00416.57
7.3.00.0100.00816.39
7.2.330.0110.00716.47
7.2.320.0120.00716.52
7.2.310.0090.00916.49
7.2.300.0150.00316.58
7.2.290.0060.01216.63
7.2.130.0150.00516.61
7.2.120.0120.00516.84
7.2.110.0020.01216.59
7.2.100.0120.00416.71
7.2.90.0070.00916.50
7.2.80.0110.00916.64
7.2.70.0110.00416.77
7.2.60.0090.00816.58
7.2.50.0120.00716.70
7.2.40.0060.00816.99
7.2.30.0060.01016.67
7.2.20.0090.00816.56
7.2.10.0060.00716.53
7.2.00.0090.00617.50
7.1.250.0050.01215.52
7.1.200.0080.00315.74
7.1.100.0000.01417.68
7.1.70.0040.00417.02
7.1.60.0160.00619.40
7.1.50.0030.01417.07
7.1.00.0030.07322.28
7.0.200.0030.01016.52
7.0.140.0030.07322.02
7.0.60.0000.04720.01
7.0.50.0100.07717.86
7.0.40.0000.09320.35
7.0.30.0270.08020.13
7.0.20.0230.06320.12
7.0.10.0170.04020.16
7.0.00.0030.04320.27
5.6.280.0000.07720.86
5.6.210.0030.07020.67
5.6.200.0070.05318.19
5.6.190.0070.08320.55
5.6.180.0230.06720.48
5.6.170.0200.04320.48
5.6.160.0030.05020.46
5.6.150.0070.07318.14
5.6.140.0130.06318.25
5.6.130.0000.08718.18
5.6.120.0070.08021.14
5.6.110.0000.06321.14
5.6.100.0000.04721.01
5.6.90.0070.07720.96
5.6.80.0000.04320.51
5.5.350.0000.07020.31
5.5.340.0030.04318.02
5.5.330.0100.05320.30
5.5.320.0230.05020.32
5.5.310.0200.05720.26
5.5.300.0130.03018.08
5.5.290.0070.03718.08
5.5.280.0100.08020.88
5.5.270.0030.05320.98
5.5.260.0030.04720.75
5.5.250.0200.07020.46
5.5.240.0270.06320.19
5.4.450.0530.04319.52
5.4.440.0230.05019.31
5.4.430.0170.04319.38
5.4.420.0330.03719.54
5.4.410.0370.04319.43
5.4.400.0500.03719.15
5.4.390.0600.04319.14
5.4.380.0430.04318.80
5.4.370.0470.06018.60
5.4.360.0400.05718.59
5.4.350.0430.05018.80
5.4.340.0430.04718.79
5.4.320.0090.03612.50
5.4.310.0070.04212.50
5.4.300.0060.03512.50
5.4.290.0080.03612.50
5.4.280.0050.03612.39
5.4.270.0070.04012.40
5.4.260.0050.04812.39
5.4.250.0050.04612.39
5.4.240.0050.03712.39
5.4.230.0040.03912.39
5.4.220.0060.03812.39
5.4.210.0050.03812.39
5.4.200.0110.03312.39
5.4.190.0120.03712.38
5.4.180.0080.03912.38
5.4.170.0050.03512.40
5.4.160.0020.03812.39
5.4.150.0070.04412.39
5.4.140.0060.04212.07
5.4.130.0030.03812.05
5.4.120.0050.04112.02
5.4.110.0050.04112.01
5.4.100.0040.04812.01
5.4.90.0040.03912.01
5.4.80.0070.04412.01
5.4.70.0050.03412.01
5.4.60.0040.03712.01
5.4.50.0060.04412.01
5.4.40.0020.03712.00
5.4.30.0070.03412.00
5.4.20.0030.03811.99
5.4.10.0040.03611.99
5.4.00.0050.04011.48
5.3.290.0060.04012.80
5.3.280.0060.03812.70
5.3.270.0040.04212.73
5.3.260.0060.04012.72
5.3.250.0080.03812.72
5.3.240.0050.03812.72
5.3.230.0050.04312.71
5.3.220.0070.04112.68
5.3.210.0080.04612.68
5.3.200.0080.04512.68
5.3.190.0040.04312.68
5.3.180.0060.04012.68
5.3.170.0070.04112.67
5.3.160.0070.03512.67
5.3.150.0070.03912.68
5.3.140.0060.03612.66
5.3.130.0060.03812.65
5.3.120.0090.03512.66
5.3.110.0040.04212.66
5.3.100.0050.03912.12
5.3.90.0070.03712.10
5.3.80.0060.03612.09
5.3.70.0070.03612.09
5.3.60.0070.03712.07
5.3.50.0070.03712.02
5.3.40.0080.03712.02
5.3.30.0060.03611.98
5.3.20.0070.03311.76
5.3.10.0090.03511.73
5.3.00.0050.03711.72
5.2.170.0060.0299.18
5.2.160.0040.0309.18
5.2.150.0050.0299.19
5.2.140.0060.0369.18
5.2.130.0050.0289.14
5.2.120.0040.0309.14
5.2.110.0100.0299.14
5.2.100.0010.0359.14
5.2.90.0070.0269.14
5.2.80.0040.0309.14
5.2.70.0050.0299.14
5.2.60.0020.0329.10
5.2.50.0030.0319.07
5.2.40.0090.0309.04
5.2.30.0040.0399.02
5.2.20.0030.0319.00
5.2.10.0060.0298.93
5.2.00.0030.0308.78
5.1.60.0040.0238.06
5.1.50.0070.0248.06
5.1.40.0050.0238.05
5.1.30.0060.0268.40
5.1.20.0050.0338.42
5.1.10.0010.0318.14
5.1.00.0050.0288.14
5.0.50.0050.0206.63
5.0.40.0030.0276.48
5.0.30.0020.0376.29
5.0.20.0050.0186.26
5.0.10.0040.0236.24
5.0.00.0020.0326.23
4.4.90.0010.0184.78
4.4.80.0000.0184.75
4.4.70.0020.0194.75
4.4.60.0040.0144.76
4.4.50.0040.0134.77
4.4.40.0040.0254.71
4.4.30.0020.0204.76
4.4.20.0040.0144.84
4.4.10.0070.0144.85
4.4.00.0020.0344.75
4.3.110.0030.0204.67
4.3.100.0030.0154.66
4.3.90.0020.0154.64
4.3.80.0050.0234.58
4.3.70.0010.0164.63
4.3.60.0050.0134.62
4.3.50.0010.0184.63
4.3.40.0050.0264.54
4.3.30.0050.0143.29
4.3.20.0030.0153.27
4.3.10.0000.0173.22
4.3.00.0130.01315.92

preferences:
42.06 ms | 401 KiB | 5 Q