3v4l.org

run code in 300+ PHP versions simultaneously
<?php $chunk = 'abcd'; $str = ''; // Generating a random string. for ($i = 0; $i < 8; ++$i) { $str = strrev($str . $chunk); } echo $str;

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)
8.3.60.0100.01018.18
8.3.50.0040.01817.93
8.3.40.0090.00618.48
8.3.30.0100.01019.02
8.3.20.0000.00720.09
8.3.10.0060.00321.86
8.3.00.0060.00319.02
8.2.180.0070.00718.17
8.2.170.0080.01222.96
8.2.160.0140.00020.39
8.2.150.0080.00024.18
8.2.140.0070.00024.66
8.2.130.0040.00426.16
8.2.120.0050.00319.36
8.2.110.0100.00019.21
8.2.100.0080.00417.50
8.2.90.0080.00019.08
8.2.80.0060.00317.97
8.2.70.0050.00317.50
8.2.60.0080.00017.93
8.2.50.0050.00318.07
8.2.40.0030.00519.88
8.2.30.0070.00018.05
8.2.20.0030.00517.73
8.2.10.0040.00418.11
8.2.00.0000.00817.71
8.1.280.0120.00625.92
8.1.270.0030.00620.67
8.1.260.0030.01026.35
8.1.250.0070.00028.09
8.1.240.0030.00624.03
8.1.230.0080.00817.48
8.1.220.0080.00017.74
8.1.210.0080.00018.77
8.1.200.0070.00317.23
8.1.190.0050.00317.23
8.1.180.0080.00018.10
8.1.170.0080.00019.01
8.1.160.0070.00021.79
8.1.150.0080.00018.72
8.1.140.0000.00717.28
8.1.130.0030.00317.75
8.1.120.0000.00717.44
8.1.110.0080.00017.37
8.1.100.0050.00317.25
8.1.90.0030.00317.39
8.1.80.0000.00717.39
8.1.70.0030.00317.34
8.1.60.0030.00517.57
8.1.50.0030.00617.34
8.1.40.0000.00917.51
8.1.30.0080.00017.59
8.1.20.0050.00217.48
8.1.10.0040.00417.40
8.1.00.0030.00617.48
8.0.300.0070.00018.77
8.0.290.0080.00016.63
8.0.280.0000.00718.39
8.0.270.0000.00817.25
8.0.260.0040.00417.23
8.0.250.0030.00316.86
8.0.240.0030.00316.95
8.0.230.0040.00416.98
8.0.220.0000.00716.89
8.0.210.0000.00716.81
8.0.200.0030.00316.94
8.0.190.0000.00816.87
8.0.180.0030.00516.95
8.0.170.0050.00316.88
8.0.160.0050.00316.97
8.0.150.0000.00816.86
8.0.140.0040.00416.67
8.0.130.0040.00413.33
8.0.120.0040.00416.83
8.0.110.0030.00516.90
8.0.100.0040.00416.90
8.0.90.0000.00816.80
8.0.80.0040.01116.91
8.0.70.0040.00416.91
8.0.60.0080.00016.94
8.0.50.0070.00016.69
8.0.30.0160.01016.89
8.0.20.0150.00717.40
8.0.10.0050.00316.95
8.0.00.0100.00616.75
7.4.330.0000.00515.03
7.4.320.0000.00616.43
7.4.300.0070.00016.28
7.4.290.0030.00316.57
7.4.280.0000.00716.38
7.4.270.0040.00416.44
7.4.260.0000.00716.40
7.4.250.0000.00816.25
7.4.240.0030.00316.41
7.4.230.0040.00416.18
7.4.220.0070.01016.38
7.4.210.0030.01016.48
7.4.200.0030.00316.50
7.4.160.0120.00916.21
7.4.150.0060.01117.40
7.4.140.0100.00817.86
7.4.130.0070.01316.45
7.4.120.0140.00516.41
7.4.110.0130.01016.52
7.4.100.0040.01316.52
7.4.90.0140.00316.34
7.4.80.0070.01119.39
7.4.70.0140.00316.59
7.4.60.0150.00616.39
7.4.50.0030.00316.35
7.4.40.0080.00816.44
7.4.30.0150.00616.40
7.4.00.0060.00915.09
7.3.330.0030.00313.05
7.3.320.0060.00613.13
7.3.310.0000.00716.11
7.3.300.0030.00316.25
7.3.290.0050.01116.29
7.3.280.0120.00816.29
7.3.270.0050.01317.40
7.3.260.0180.00716.23
7.3.250.0080.01116.21
7.3.240.0070.01016.55
7.3.230.0090.00916.39
7.3.210.0130.00316.40
7.3.200.0040.01219.39
7.3.190.0080.00816.63
7.3.180.0090.00616.61
7.3.170.0090.01316.27
7.3.160.0090.01316.37
7.2.330.0100.01316.78
7.2.320.0060.01616.66
7.2.310.0100.00616.48
7.2.300.0110.00616.80
7.2.290.0070.01616.68
7.2.60.0090.00616.65
7.2.00.0090.01219.60
7.1.200.0110.00015.46
7.1.100.0000.01318.20
7.1.70.0000.00816.96
7.1.60.0090.01519.50
7.1.50.0000.02217.00
7.1.00.0030.07722.31
7.0.200.6310.00314.73
7.0.140.0070.03022.12
7.0.60.0070.03719.91
7.0.50.0030.04017.80
7.0.40.0130.08320.20
7.0.30.0400.07320.21
7.0.20.0200.04320.16
7.0.10.0170.07020.04
7.0.00.0030.04020.03
5.6.280.0000.07721.13
5.6.210.0130.07720.69
5.6.200.0070.06018.11
5.6.190.0100.06020.57
5.6.180.0000.08020.59
5.6.170.0300.06020.50
5.6.160.0100.06020.49
5.6.150.0130.07318.21
5.6.140.0030.06018.14
5.6.130.0070.04018.21
5.6.120.0100.08021.12
5.6.110.0070.05321.13
5.6.100.0070.05021.10
5.6.90.0130.06021.03
5.6.80.0070.07720.35
5.6.70.0200.05720.38
5.5.350.0200.06320.43
5.5.340.0030.05017.95
5.5.330.0030.09020.29
5.5.320.0000.07020.29
5.5.310.0530.05720.50
5.5.300.0070.04017.92
5.5.290.0100.05017.89
5.5.280.0030.06720.68
5.5.270.0070.05720.82
5.5.260.0030.04320.88
5.5.250.0070.06720.58
5.5.240.0070.04320.36
5.4.450.0330.04719.28
5.4.440.0870.06019.49
5.4.430.0800.06719.40
5.4.420.0130.05019.41
5.4.410.0030.06018.65
5.4.400.0400.04318.61
5.4.390.0570.04318.68
5.4.380.0300.05318.75
5.4.370.0400.05318.77
5.4.360.0330.07318.63
5.4.350.1800.05718.74
5.4.340.0400.05018.72
5.4.320.0430.05018.71
5.4.310.0300.05718.44
5.4.300.1330.05318.73
5.4.290.0370.05318.72
5.4.280.0230.05318.68
5.4.270.0300.05018.67
5.4.260.0300.05318.53
5.4.250.0230.06318.48
5.4.240.0470.05018.45
5.4.230.1770.06018.70
5.4.220.0300.06318.69
5.4.210.0330.05018.71
5.4.200.0330.05716.61
5.4.190.0330.06018.57
5.4.180.0400.07018.70
5.4.170.0270.06718.70
5.4.160.0230.05718.64
5.4.150.0300.04318.63
5.4.140.0100.05316.09
5.4.130.0200.04716.19
5.4.120.0370.05716.26
5.4.110.0430.03716.23
5.4.100.0430.04716.25
5.4.90.0300.06016.16
5.4.80.0330.05316.30
5.4.70.0330.06316.27
5.4.60.0400.05316.32
5.4.50.0370.06316.01
5.4.40.0530.06316.03
5.4.30.0400.05016.13
5.4.20.0300.05316.21
5.4.10.0230.07016.00
5.4.00.0300.06015.75
5.3.290.0270.06714.75
5.3.280.0370.04314.55
5.3.270.0370.05314.49
5.3.260.0400.05314.50
5.3.250.0330.05014.68
5.3.240.0230.06714.51
5.3.230.0270.07314.60
5.3.220.0870.05714.51
5.3.210.1400.05714.54
5.3.200.2030.05714.49
5.3.190.0370.05314.49
5.3.180.0330.05314.55
5.3.170.0400.06314.55
5.3.160.0300.04714.61
5.3.150.1800.05314.54
5.3.140.0370.05014.64
5.3.130.0430.04314.52
5.3.120.0270.06314.45
5.3.110.0130.06714.54
5.3.100.0370.05313.95
5.3.90.0070.06013.91
5.3.80.1570.06014.09
5.3.70.0470.05713.91
5.3.60.0300.05313.94
5.3.50.0370.05313.92
5.3.40.0370.06013.86
5.3.30.0270.05314.00
5.3.20.0330.05013.68
5.3.10.0300.05013.64
5.3.00.0270.05013.61
5.2.170.0230.04711.10
5.2.160.0500.04711.05
5.2.150.0200.04311.13
5.2.140.0100.04311.09
5.2.130.0370.03711.05
5.2.120.0500.05011.06
5.2.110.0170.04711.25
5.2.100.0330.03711.26
5.2.90.0170.04711.14
5.2.80.0370.04711.07
5.2.70.0230.04011.23
5.2.60.0300.03711.03
5.2.50.0370.03010.98
5.2.40.0230.03710.97
5.2.30.0200.04310.93
5.2.20.0200.04010.93
5.2.10.0230.03310.82
5.2.00.0130.04710.86
5.1.60.0200.04710.11
5.1.50.0170.04710.08
5.1.40.0200.0339.95
5.1.30.0330.03710.30
5.1.20.0200.04010.40
5.1.10.0230.03310.06
5.1.00.0170.03710.18
5.0.50.0130.0338.56
5.0.40.0100.0408.42
5.0.30.0200.0508.33
5.0.20.0170.0338.29
5.0.10.0100.0308.29
5.0.00.0130.0508.36
4.4.90.0130.0205.88
4.4.80.0070.0275.90
4.4.70.0130.0205.86
4.4.60.0030.0275.89
4.4.50.0100.0205.90
4.4.40.0070.0375.85
4.4.30.0030.0275.90
4.4.20.0100.0235.93
4.4.10.0070.0235.94
4.4.00.0130.0305.97
4.3.110.0170.0175.84
4.3.100.0130.0235.80
4.3.90.0170.0135.79
4.3.80.0130.0305.82
4.3.70.0070.0235.89
4.3.60.0070.0235.84
4.3.50.0100.0205.78
4.3.40.0070.0375.78
4.3.30.0070.0205.22
4.3.20.0070.0275.22
4.3.10.0130.0175.22
4.3.00.0070.0176.80

preferences:
74.96 ms | 400 KiB | 5 Q