3v4l.org

run code in 300+ PHP versions simultaneously
<?php function reverseString($string){ $len = strlen($string); for ($i = 0; $i < $len / 2; $i++) { $string[$i] = chr(ord($string[$i]) ^ ord($string[$len - $i])); $string[$len - $i] = chr(ord($string[$i]) ^ ord($string[$len - $i])); $string[$i] = chr(ord($string[$i]) ^ ord($string[$len - $i])); } return $string; } reverseString("ping");

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)
8.3.60.0110.00416.75
8.3.50.0100.01122.09
8.3.40.0130.00418.59
8.3.30.0030.01019.13
8.3.20.0050.00320.33
8.3.10.0000.00723.67
8.3.00.0080.00019.25
8.2.180.0070.01418.26
8.2.170.0140.00022.96
8.2.160.0100.01020.33
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0160.00326.16
8.2.120.0070.00022.21
8.2.110.0030.00719.11
8.2.100.0090.00318.03
8.2.90.0000.00819.14
8.2.80.0080.00017.97
8.2.70.0090.00017.63
8.2.60.0060.00317.93
8.2.50.0030.00718.07
8.2.40.0000.00920.07
8.2.30.0000.00718.07
8.2.20.0060.00317.85
8.2.10.0000.00818.00
8.2.00.0040.00417.80
8.1.280.0110.00725.92
8.1.270.0050.00323.87
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0040.00421.30
8.1.230.0040.00817.42
8.1.220.0000.00817.74
8.1.210.0030.00618.77
8.1.200.0100.00017.23
8.1.190.0060.00317.23
8.1.180.0000.01019.01
8.1.170.0000.00818.51
8.1.160.0040.00422.04
8.1.150.0090.00018.64
8.1.140.0030.00517.46
8.1.130.0070.00017.86
8.1.120.0040.00417.37
8.1.110.0080.00017.46
8.1.100.0000.00717.41
8.1.90.0040.00417.44
8.1.80.0050.00217.44
8.1.70.0030.00317.39
8.1.60.0000.00817.55
8.1.50.0000.00917.45
8.1.40.0000.00817.50
8.1.30.0000.00817.59
8.1.20.0080.00017.63
8.1.10.0000.00817.59
8.1.00.0050.00317.48
8.0.300.0070.00418.77
8.0.290.0040.00416.88
8.0.280.0030.00318.35
8.0.270.0000.00717.12
8.0.260.0030.00317.14
8.0.250.0040.00416.91
8.0.240.0050.00316.91
8.0.230.0000.00817.04
8.0.220.0000.00716.97
8.0.210.0040.00416.94
8.0.200.0000.00616.90
8.0.190.0000.00816.89
8.0.180.0060.00316.93
8.0.170.0040.00417.01
8.0.160.0080.00016.98
8.0.150.0030.00316.87
8.0.140.0070.00016.88
8.0.130.0030.00313.37
8.0.120.0020.00517.00
8.0.110.0040.00416.96
8.0.100.0030.00516.79
8.0.90.0040.00416.81
8.0.80.0100.00716.90
8.0.70.0040.00416.82
8.0.60.0040.00416.85
8.0.50.0030.00616.85
8.0.30.0120.00817.06
8.0.20.0100.01117.40
8.0.10.0040.00416.95
8.0.00.0060.01016.83
7.4.330.0030.00315.00
7.4.320.0040.00416.43
7.4.300.0000.00616.35
7.4.290.0000.00716.60
7.4.280.0000.00816.59
7.4.270.0040.00416.52
7.4.260.0070.00016.41
7.4.250.0000.00716.38
7.4.240.0050.00216.61
7.4.230.0030.00316.62
7.4.220.0100.00916.65
7.4.210.0120.00616.53
7.4.200.0030.00316.55
7.4.190.0000.00716.67
7.4.160.0130.00316.60
7.4.150.0150.00417.40
7.4.140.0110.00617.86
7.4.130.0050.01116.65
7.4.120.0080.01016.44
7.4.110.0070.01416.53
7.4.100.0060.01216.52
7.4.90.0080.00916.69
7.4.80.0070.01119.39
7.4.70.0060.00916.46
7.4.60.0110.01116.44
7.4.50.0050.00016.60
7.4.40.0070.01122.77
7.4.30.0190.00016.38
7.4.00.0070.01114.81
7.3.330.0000.00513.40
7.3.320.0030.00313.23
7.3.310.0000.00816.24
7.3.300.0000.00716.29
7.3.290.0070.01016.49
7.3.280.0080.00816.35
7.3.270.0120.00617.40
7.3.260.0170.00016.68
7.3.250.0100.00716.44
7.3.240.0060.01016.42
7.3.230.0000.01616.46
7.3.210.0080.00816.52
7.3.200.0060.01219.39
7.3.190.0060.01016.61
7.3.180.0130.00316.40
7.3.170.0070.00716.47
7.3.160.0110.00716.54
7.3.120.0050.00914.67
7.3.110.0100.00714.75
7.3.100.0000.00915.06
7.3.90.0040.00714.91
7.3.80.0100.00315.06
7.3.70.0100.00314.61
7.3.60.0070.00714.96
7.3.50.0070.01114.89
7.3.40.0120.00014.93
7.3.30.0040.01214.90
7.3.20.0080.00316.77
7.3.10.0040.01116.94
7.3.00.0090.00316.64
7.2.330.0090.00916.78
7.2.320.0090.00816.74
7.2.310.0110.00616.61
7.2.300.0130.00316.44
7.2.290.0030.01316.73
7.2.250.0060.00915.16
7.2.240.0060.01314.85
7.2.230.0120.00315.01
7.2.220.0080.00815.13
7.2.210.0000.01415.22
7.2.200.0030.00715.10
7.2.190.0000.01914.96
7.2.180.0070.00715.18
7.2.170.0000.01214.75
7.2.00.0000.00919.50
7.1.330.0000.01516.03
7.1.320.0070.00715.76
7.1.310.0000.01515.81
7.1.300.0060.00915.72
7.1.290.0030.01415.77
7.1.280.0000.01415.73
7.1.270.0070.00715.49
7.1.260.0030.00615.71
7.1.200.0040.00815.64
7.1.100.0030.01018.11
7.1.70.0030.00517.26
7.1.60.0140.01119.46
7.1.50.0040.01816.67
7.1.00.0100.07022.48
7.0.200.0160.00616.63
7.0.140.0030.07021.99
7.0.60.0200.04319.89
7.0.50.0030.08317.87
7.0.40.0000.07020.35
7.0.30.0530.06720.07
7.0.20.0230.03720.12
7.0.10.0070.08320.09
7.0.00.0100.06020.23
5.6.280.0100.06720.90
5.6.210.0100.07720.73
5.6.200.0170.04318.23
5.6.190.0100.08020.64
5.6.180.3500.04720.47
5.6.170.0200.03720.40
5.6.160.0100.08020.44
5.6.150.0030.04018.25
5.6.140.0030.07718.28
5.6.130.0070.08018.16
5.6.120.0000.04321.12
5.6.110.0070.08020.99
5.6.100.0100.06721.02
5.6.90.0070.08021.00
5.6.80.0130.05720.29
5.5.350.0100.06320.50
5.5.340.0030.04317.96
5.5.330.0130.03720.31
5.5.320.0270.05020.28
5.5.310.0330.07720.30
5.5.300.0030.06317.98
5.5.290.0000.04318.01
5.5.280.0170.07720.88
5.5.270.0270.07320.64
5.5.260.0000.05020.84
5.5.250.0030.08320.57
5.5.240.0300.06720.19
5.4.450.0870.05319.71
5.4.440.0730.06319.62
5.4.430.0070.08019.61
5.4.420.0670.00019.21
5.4.410.0100.05719.00
5.4.400.0170.05318.82
5.4.390.0230.04718.84
5.4.380.0130.05718.79
5.4.370.0100.05018.59
5.4.360.0070.04718.45
5.4.350.0060.03312.02
5.4.340.0050.03812.02
5.4.320.0070.03612.50
5.4.310.0030.04112.50
5.4.300.0070.04012.50
5.4.290.0050.03812.49
5.4.280.0080.03312.38
5.4.270.0040.03812.38
5.4.260.0060.04512.38
5.4.250.0100.03812.38
5.4.240.0070.03712.38
5.4.230.0120.04712.38
5.4.220.0050.03912.38
5.4.210.0040.04012.37
5.4.200.0060.03912.37
5.4.190.0110.04112.37
5.4.180.0080.04912.37
5.4.170.0120.04312.38
5.4.160.0060.04012.38
5.4.150.0080.04212.38
5.4.140.0080.04212.05
5.4.130.0060.03812.05
5.4.120.0070.03512.00
5.4.110.0040.04012.00
5.4.100.0070.03512.00
5.4.90.0050.05112.00
5.4.80.0050.03712.00
5.4.70.0030.03811.99
5.4.60.0060.05411.99
5.4.50.0070.05511.99
5.4.40.0090.06311.98
5.4.30.0080.04911.97
5.4.20.0070.05211.98
5.4.10.0110.04811.98
5.4.00.0060.04211.46
5.3.290.0080.04112.80
5.3.280.0090.05112.71
5.3.270.0070.03812.73
5.3.260.0110.03912.71
5.3.250.0040.03812.72
5.3.240.0070.03512.72
5.3.230.0090.05012.71
5.3.220.0020.05012.68
5.3.210.0070.04812.68
5.3.200.0020.05512.68
5.3.190.0050.04112.68
5.3.180.0080.03812.67
5.3.170.0080.03512.67
5.3.160.0120.04412.68
5.3.150.0110.03712.67
5.3.140.0100.03312.66
5.3.130.0070.03812.66
5.3.120.0040.04012.66
5.3.110.0110.03512.66
5.3.100.0040.04012.12
5.3.90.0060.03812.10
5.3.80.0060.03812.09
5.3.70.0070.03712.09
5.3.60.0070.04412.08
5.3.50.0130.03912.02
5.3.40.0110.05712.02
5.3.30.0120.05411.98
5.3.20.0100.04911.76
5.3.10.0070.03311.73
5.3.00.0040.03811.72
5.2.170.0070.0289.21
5.2.160.0050.0349.21
5.2.150.0080.0429.21
5.2.140.0060.0309.21
5.2.130.0100.0269.17
5.2.120.0050.0299.17
5.2.110.0060.0279.18
5.2.100.0070.0419.17
5.2.90.0080.0389.18
5.2.80.0050.0309.17
5.2.70.0090.0269.17
5.2.60.0060.0359.12
5.2.50.0040.0339.09
5.2.40.0070.0279.07
5.2.30.0050.0299.04
5.2.20.0070.0269.04
5.2.10.0040.0298.94
5.2.00.0060.0288.80
5.1.60.0030.0258.09
5.1.50.0030.0268.09
5.1.40.0030.0268.06
5.1.30.0030.0408.41
5.1.20.0060.0388.43
5.1.10.0040.0378.16
5.1.00.0050.0378.16
5.0.50.0030.0256.65
5.0.40.0040.0226.52
5.0.30.0040.0336.33
5.0.20.0050.0196.29
5.0.10.0020.0226.27
5.0.00.0040.0316.26
4.4.90.0030.0164.78
4.4.80.0030.0194.75
4.4.70.0020.0174.76
4.4.60.0040.0154.76
4.4.50.0040.0154.77
4.4.40.0030.0254.71
4.4.30.0010.0174.76
4.4.20.0030.0194.85
4.4.10.0040.0154.85
4.4.00.0040.0294.76
4.3.110.0030.0164.66
4.3.100.0020.0164.67
4.3.90.0030.0144.63
4.3.80.0040.0234.59
4.3.70.0050.0134.63
4.3.60.0010.0164.63
4.3.50.0050.0134.63
4.3.40.0020.0254.53
4.3.30.0030.0153.31
4.3.20.0020.0163.29
4.3.10.0020.0163.25
4.3.00.0100.0176.80

preferences:
45.58 ms | 401 KiB | 5 Q