3v4l.org

run code in 300+ PHP versions simultaneously
<?php $text = 'Hello world'; $result = str_split($text); $result = array_map('ord', $result); $result = array_map('dechex', $result); var_dump("0x" . implode('', $result)); var_dump(unpack('H*', $text)[1]);

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)
8.3.60.0110.00318.20
8.3.50.0130.00822.04
8.3.40.0070.01118.73
8.3.30.0100.00318.92
8.3.20.0000.00820.02
8.3.10.0040.00423.61
8.3.00.0080.00319.25
8.2.180.0060.01016.75
8.2.170.0090.00922.96
8.2.160.0100.00320.47
8.2.150.0040.00424.18
8.2.140.0070.00024.66
8.2.130.0050.00226.16
8.2.120.0020.00522.09
8.2.110.0040.00420.42
8.2.100.0040.00718.03
8.2.90.0040.00419.36
8.2.80.0060.00317.97
8.2.70.0040.00417.63
8.2.60.0060.00317.80
8.2.50.0030.00518.07
8.2.40.0050.00318.17
8.2.30.0030.00618.09
8.2.20.0000.00717.67
8.2.10.0040.00418.03
8.2.00.0070.00017.70
8.1.280.0030.01225.92
8.1.270.0110.00023.99
8.1.260.0060.00326.35
8.1.250.0030.00528.09
8.1.240.0030.00623.76
8.1.230.0060.00619.17
8.1.220.0000.00917.74
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0050.00317.36
8.1.180.0000.00818.10
8.1.170.0080.00318.61
8.1.160.0040.00421.78
8.1.150.0070.00018.78
8.1.140.0000.00917.29
8.1.130.0040.00417.77
8.1.120.0040.00417.30
8.1.110.0000.00717.29
8.1.100.0000.00717.29
8.1.90.0030.00317.41
8.1.80.0030.00517.42
8.1.70.0030.00317.34
8.1.60.0000.00817.39
8.1.50.0000.00817.43
8.1.40.0040.00417.40
8.1.30.0000.00817.58
8.1.20.0000.00717.40
8.1.10.0000.00717.63
8.1.00.0040.00417.55
8.0.300.0040.00418.77
8.0.290.0070.00016.75
8.0.280.0000.00718.43
8.0.270.0040.00417.24
8.0.260.0030.00317.16
8.0.250.0030.00316.82
8.0.240.0070.00016.83
8.0.230.0000.00716.82
8.0.220.0000.00616.77
8.0.210.0030.00316.90
8.0.200.0070.00416.83
8.0.190.0000.00916.85
8.0.180.0070.00016.93
8.0.170.0000.00816.92
8.0.160.0000.00816.72
8.0.150.0000.00716.90
8.0.140.0050.00516.75
8.0.130.0030.00313.30
8.0.120.0060.00316.73
8.0.110.0000.00716.70
8.0.100.0040.00416.79
8.0.90.0070.00016.61
8.0.80.0060.00916.78
8.0.70.0000.00816.68
8.0.60.0000.00716.76
8.0.50.0040.00416.80
8.0.30.0140.00616.90
8.0.20.0180.00317.40
8.0.10.0000.00716.73
8.0.00.0140.00416.78
7.4.330.0050.00015.08
7.4.320.0000.00716.54
7.4.300.0000.00616.52
7.4.290.0040.00416.55
7.4.280.0000.00716.54
7.4.270.0000.00716.45
7.4.260.0040.00416.49
7.4.250.0040.00416.29
7.4.240.0000.00716.50
7.4.230.0040.00416.40
7.4.220.0160.00716.42
7.4.210.0120.00316.55
7.4.200.0040.00416.50
7.4.160.0090.00616.47
7.4.150.0090.00917.40
7.4.140.0090.01117.86
7.4.130.0070.01016.47
7.4.120.0110.00716.55
7.4.110.0070.01016.62
7.4.100.0060.01516.41
7.4.90.0080.00816.44
7.4.80.0120.00619.39
7.4.70.0170.00016.57
7.4.60.0060.01016.54
7.4.50.0030.00616.37
7.4.40.0080.00716.61
7.4.30.0060.01216.54
7.4.00.0040.01114.68
7.3.330.0000.00613.16
7.3.320.0020.00213.18
7.3.310.0030.00316.18
7.3.300.0030.00316.19
7.3.290.0140.00016.24
7.3.280.0120.00716.20
7.3.270.0120.00617.40
7.3.260.0070.01116.36
7.3.250.0070.00916.34
7.3.240.0060.01716.49
7.3.230.0100.00716.53
7.3.210.0060.01116.51
7.3.200.0110.00719.39
7.3.190.0130.00316.32
7.3.180.0070.01016.24
7.3.170.0100.01016.31
7.3.160.0100.00716.59
7.2.330.0140.00316.62
7.2.320.0120.00416.59
7.2.310.0030.01616.66
7.2.300.0130.00316.71
7.2.290.0110.00516.50
7.1.70.0000.00717.18
7.1.60.0130.01319.32
7.1.50.0000.01116.86
7.1.00.0100.07022.35
7.0.200.0040.00416.63
7.0.140.0070.06722.00
7.0.60.0100.05320.00
7.0.50.0100.07717.76
7.0.40.0070.04320.05
7.0.30.0400.06020.00
7.0.20.0370.07320.09
7.0.10.0030.07320.11
7.0.00.0030.08720.19
5.6.280.0030.07321.12
5.6.210.0130.07020.46
5.6.200.0130.08018.12
5.6.190.0100.03720.62
5.6.180.0070.05020.77
5.6.170.0400.07020.48
5.6.160.0130.06020.46
5.6.150.0030.04018.17
5.6.140.0130.07018.17
5.6.130.0000.05018.07
5.6.120.0100.03320.97
5.6.110.0170.07720.96
5.6.100.0100.07021.03
5.6.90.0070.05320.96
5.6.80.0100.07720.36
5.5.350.0100.08020.31
5.5.340.0130.03017.98
5.5.330.0100.08020.13
5.5.320.0300.07720.18
5.5.310.0230.04320.34
5.5.300.0030.05317.92
5.5.290.0030.08317.93
5.5.280.0100.07720.97
5.5.270.0030.08020.59
5.5.260.0070.08320.86
5.5.250.0000.04720.63
5.5.240.0130.07720.34
5.4.450.0500.05019.58
5.4.440.0170.04019.38
5.4.430.0300.03719.13
5.4.420.0630.00019.34
5.4.410.0630.00019.39
5.4.400.0600.00019.05
5.4.390.0600.00019.05
5.4.380.0730.00019.00
5.4.370.0600.00019.25
5.4.360.0670.00019.16
5.4.350.0670.00019.14
5.4.340.0080.03411.96
5.4.320.0060.04312.45
5.4.310.0080.04112.45
5.4.300.0080.03612.45
5.4.290.0070.03912.45
5.4.280.0060.03612.34
5.4.270.0060.04212.35
5.4.260.0060.03912.34
5.4.250.0060.03812.34
5.4.240.0070.03512.35
5.4.230.0070.04412.34
5.4.220.0060.03812.34
5.4.210.0090.03712.34
5.4.200.0080.04212.34
5.4.190.0090.03612.33
5.4.180.0070.03912.34
5.4.170.0060.03612.34
5.4.160.0080.03512.34
5.4.150.0050.03712.34
5.4.140.0040.04012.02
5.4.130.0040.03712.01
5.4.120.0050.03911.96
5.4.110.0040.03711.96
5.4.100.0050.03711.96
5.4.90.0030.04011.96
5.4.80.0070.03611.96
5.4.70.0040.03611.96
5.4.60.0090.03211.96
5.4.50.0090.03211.96
5.4.40.0050.03611.95
5.4.30.0050.03611.95
5.4.20.0090.03111.95
5.4.10.0020.03811.95
5.4.00.0030.03911.44
5.3.290.0100.03612.80
5.3.280.0070.04112.71
5.3.270.0080.04912.73
5.3.260.0070.04112.72
5.3.250.0060.03812.72
5.3.240.0050.03712.72
5.3.230.0090.03612.71
5.3.220.0090.03512.68
5.3.210.0100.03512.68
5.3.200.0050.03712.68
5.3.190.0080.03612.68
5.3.180.0090.03912.67
5.3.170.0050.03812.67
5.3.160.0050.03812.67
5.3.150.0060.03812.67
5.3.140.0050.04112.66
5.3.130.0070.04112.66
5.3.120.0080.04012.66
5.3.110.0050.04212.66
5.3.100.0090.03612.12
5.3.90.0040.04012.08
5.3.80.0070.03612.08
5.3.70.0060.04512.07
5.3.60.0050.03712.07
5.3.50.0070.03612.00
5.3.40.0080.03412.00
5.3.30.0030.03811.95
5.3.20.0040.03711.73
5.3.10.0050.03511.70
5.3.00.0070.03611.68
5.2.170.0040.0319.18
5.2.160.0010.0339.19
5.2.150.0060.0309.18
5.2.140.0090.0259.18
5.2.130.0090.0369.14
5.2.120.0030.0309.14
5.2.110.0040.0309.15
5.2.100.0060.0289.14
5.2.90.0080.0269.15
5.2.80.0060.0289.14
5.2.70.0060.0289.14
5.2.60.0060.0299.09
5.2.50.0020.0339.06
5.2.40.0030.0309.04
5.2.30.0060.0289.02
5.2.20.0030.0309.01
5.2.10.0050.0278.92
5.2.00.0030.0308.79
5.1.60.0050.0288.07
5.1.50.0070.0278.07
5.1.40.0030.0258.05
5.1.30.0050.0268.39
5.1.20.0030.0288.43
5.1.10.0060.0248.15
5.1.00.0060.0248.14
5.0.50.0050.0196.63
5.0.40.0060.0176.48
5.0.30.0020.0326.30
5.0.20.0030.0206.27
5.0.10.0070.0176.24
5.0.00.0040.0306.23
4.4.90.0020.0164.78
4.4.80.0030.0164.75
4.4.70.0030.0154.76
4.4.60.0020.0164.75
4.4.50.0010.0204.77
4.4.40.0020.0264.71
4.4.30.0010.0174.76
4.4.20.0000.0184.84
4.4.10.0010.0264.84
4.4.00.0040.0284.76
4.3.110.0020.0224.67
4.3.100.0030.0154.66
4.3.90.0030.0144.63
4.3.80.0020.0254.58
4.3.70.0020.0154.63
4.3.60.0010.0164.63
4.3.50.0050.0124.62
4.3.40.0000.0264.54
4.3.30.0010.0163.29
4.3.20.0010.0233.26
4.3.10.0010.0203.22
4.3.00.0030.01310.58

preferences:
42.78 ms | 401 KiB | 5 Q