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));

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)
8.3.60.0110.00318.24
8.3.50.0070.01117.93
8.3.40.0090.00918.59
8.3.30.0040.01219.11
8.3.20.0050.00320.04
8.3.10.0080.00023.66
8.3.00.0030.00717.46
8.2.180.0160.00316.32
8.2.170.0120.00622.96
8.2.160.0160.00420.27
8.2.150.0080.00024.18
8.2.140.0080.00824.66
8.2.130.0080.00026.16
8.2.120.0050.00322.23
8.2.110.0040.00420.51
8.2.100.0080.00417.91
8.2.90.0030.00618.34
8.2.80.0030.00617.97
8.2.70.0090.00017.50
8.2.60.0060.00317.80
8.2.50.0000.00818.07
8.2.40.0000.00718.22
8.2.30.0040.00418.15
8.2.20.0040.00417.61
8.2.10.0020.00518.03
8.2.00.0000.00717.72
8.1.280.0140.00725.92
8.1.270.0030.00624.02
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00322.05
8.1.230.0060.00620.98
8.1.220.0060.00317.78
8.1.210.0030.00519.01
8.1.200.0090.00017.23
8.1.190.0000.00817.35
8.1.180.0000.00818.10
8.1.170.0080.00018.53
8.1.160.0040.00421.89
8.1.150.0060.00318.69
8.1.140.0000.00717.36
8.1.130.0000.00717.86
8.1.120.0040.00417.41
8.1.110.0000.00817.34
8.1.100.0000.00717.38
8.1.90.0020.00517.41
8.1.80.0050.00317.30
8.1.70.0030.00517.34
8.1.60.0080.00017.52
8.1.50.0030.00617.46
8.1.40.0000.00717.48
8.1.30.0000.00817.55
8.1.20.0040.00417.44
8.1.10.0050.00317.37
8.1.00.0060.00317.39
8.0.300.0040.00420.09
8.0.290.0040.00416.63
8.0.280.0070.00018.35
8.0.270.0070.00017.25
8.0.260.0040.00417.13
8.0.250.0070.00016.86
8.0.240.0030.00316.92
8.0.230.0030.00316.86
8.0.220.0040.00416.84
8.0.210.0030.00316.79
8.0.200.0000.00917.00
8.0.190.0000.00816.94
8.0.180.0040.00416.89
8.0.170.0040.00416.88
8.0.160.0000.00716.91
8.0.150.0040.00416.78
8.0.140.0060.00516.85
8.0.130.0000.00513.34
8.0.120.0000.00916.88
8.0.110.0040.00416.70
8.0.100.0070.00016.80
8.0.90.0040.00416.82
8.0.80.0090.00916.78
8.0.70.0080.00016.79
8.0.60.0040.00416.83
8.0.50.0040.00416.80
8.0.30.0110.01217.11
8.0.20.0080.01017.40
8.0.10.0040.00416.75
8.0.00.0120.00516.80
7.4.330.0000.00615.00
7.4.320.0000.00616.54
7.4.300.0030.00316.45
7.4.290.0030.00316.50
7.4.280.0070.00016.47
7.4.270.0040.00416.43
7.4.260.0040.00416.47
7.4.250.0040.00416.40
7.4.240.0020.00516.43
7.4.230.0030.00316.30
7.4.220.0160.00916.38
7.4.210.0060.01516.48
7.4.200.0070.00016.41
7.4.160.0100.01016.38
7.4.150.0070.01017.40
7.4.140.0130.00817.86
7.4.130.0110.00716.51
7.4.120.0060.01116.57
7.4.110.0150.00316.50
7.4.100.0130.00416.36
7.4.90.0100.00716.47
7.4.80.0080.01219.39
7.4.70.0140.00316.54
7.4.60.0030.01316.51
7.4.50.0030.00316.55
7.4.40.0100.00616.45
7.4.30.0080.00816.53
7.4.00.0100.00715.12
7.3.330.0050.00013.02
7.3.320.0000.00513.08
7.3.310.0000.00716.15
7.3.300.0030.00316.09
7.3.290.0070.00716.19
7.3.280.0120.00716.16
7.3.270.0100.00717.40
7.3.260.0140.00416.35
7.3.250.0130.00516.33
7.3.240.0000.02216.41
7.3.230.0060.01216.39
7.3.210.0090.00916.27
7.3.200.0120.00619.39
7.3.190.0070.01016.33
7.3.180.0070.01016.32
7.3.170.0110.00816.58
7.3.160.0060.01016.30
7.2.330.0140.00316.72
7.2.320.0120.00416.30
7.2.310.0070.01316.40
7.2.300.0110.00516.65
7.2.290.0140.00716.44
7.2.60.0110.00416.91
7.2.00.0060.00619.43
7.1.200.0040.01115.76
7.1.100.0060.00317.75
7.1.70.0000.00816.94
7.1.60.0150.00319.32
7.1.50.0090.01216.95
7.1.00.0000.07722.28
7.0.200.0030.00516.66
7.0.140.0030.06722.21
7.0.60.0030.05319.82
7.0.50.0030.08717.80
7.0.40.0030.05020.07
7.0.30.0470.06320.01
7.0.20.0130.04720.08
7.0.10.0070.09020.09
7.0.00.0030.05019.99
5.6.280.0130.06320.78
5.6.210.0030.04020.70
5.6.200.0170.07018.19
5.6.190.0070.07320.41
5.6.180.0270.03320.45
5.6.170.0170.05020.47
5.6.160.0030.05720.52
5.6.150.0030.04718.18
5.6.140.0030.04318.20
5.6.130.0170.07018.17
5.6.120.0130.07321.01
5.6.110.0070.03720.97
5.6.100.0000.04321.00
5.6.90.0170.08021.01
5.6.80.0030.08020.37
5.6.70.4530.03320.47
5.5.350.0130.07320.40
5.5.340.0030.04317.99
5.5.330.0030.06320.43
5.5.320.0100.07320.27
5.5.310.0300.07720.50
5.5.300.0070.08317.98
5.5.290.0000.08318.02
5.5.280.0130.03320.96
5.5.270.0030.09720.88
5.5.260.0130.05020.76
5.5.250.0000.09320.68
5.5.240.0130.04020.11
5.4.450.0130.04019.46
5.4.440.0270.07319.39
5.4.430.0130.05319.25
5.4.420.0170.07019.57
5.4.410.0370.04019.41
5.4.400.0200.04318.93
5.4.390.0200.04019.21
5.4.380.0300.06718.79
5.4.370.0300.06319.10
5.4.360.0270.06718.93
5.4.350.0200.06018.93
5.4.340.0200.07319.08
5.4.320.0300.07019.09
5.4.310.0230.05318.88
5.4.300.0300.04018.80
5.4.290.0370.03718.93
5.4.280.0370.05719.23
5.4.270.0230.04719.25
5.4.260.0170.07319.06
5.4.250.0300.07018.78
5.4.240.0230.03319.15
5.4.230.0230.06019.08
5.4.220.0330.06319.08
5.4.210.0200.03719.14
5.4.200.0200.07719.13
5.4.190.0170.04719.24
5.4.180.0330.05318.81
5.4.170.0330.03319.07
5.4.160.0200.07319.07
5.4.150.0270.07319.11
5.4.140.0330.03716.28
5.4.130.0230.03716.15
5.4.120.0130.03716.35
5.4.110.0230.07016.41
5.4.100.0200.07016.39
5.4.90.0270.06316.46
5.4.80.0100.06316.32
5.4.70.0330.06016.44
5.4.60.0170.05716.37
5.4.50.0200.05316.39
5.4.40.0330.06316.20
5.4.30.0230.07016.36
5.4.20.0270.05316.31
5.4.10.0130.07016.17
5.4.00.0230.03015.76
5.3.290.0230.07014.50
5.3.280.0230.06314.44
5.3.270.0270.03314.45
5.3.260.0100.08314.63
5.3.250.0330.06314.44
5.3.240.0270.06714.63
5.3.230.0200.03314.64
5.3.220.0230.04714.43
5.3.210.0130.04014.52
5.3.200.0200.04314.41
5.3.190.0230.05714.51
5.3.180.0200.07714.59
5.3.170.0270.07014.41
5.3.160.0300.04014.42
5.3.150.0230.07314.59
5.3.140.0270.04714.41
5.3.130.0200.07014.50
5.3.120.0270.06314.48
5.3.110.0200.08014.42
5.3.100.0230.05313.91
5.3.90.0230.07013.87
5.3.80.0300.06314.06
5.3.70.0370.03713.86
5.3.60.0200.07313.85
5.3.50.0170.04713.89
5.3.40.0270.06713.91
5.3.30.0270.05714.00
5.3.20.0230.04313.72
5.3.10.0300.03713.70
5.3.00.0130.07313.70
5.2.170.0170.04012.13
5.2.160.0200.04712.13
5.2.150.0170.06312.13
5.2.140.0130.05712.13
5.2.130.0270.02712.13
5.2.120.0100.07012.13
5.2.110.0230.05712.13
5.2.100.0200.05012.13
5.2.90.0230.05312.13
5.2.80.0170.02712.13
5.2.70.0130.06712.13
5.2.60.0130.03712.13
5.2.50.0170.06312.13
5.2.40.0170.03312.13
5.2.30.0170.03312.13
5.2.20.0170.05312.13
5.2.10.0130.05012.13
5.2.00.0200.05712.13
5.1.60.0130.03712.13
5.1.50.0170.04012.13
5.1.40.0200.04312.13
5.1.30.0200.05312.13
5.1.20.0170.05712.13
5.1.10.0170.04012.13
5.1.00.0170.05312.13
5.0.50.0100.04012.13
5.0.40.0070.02312.13
5.0.30.0000.04312.13
5.0.20.0070.04712.13
5.0.10.0170.01712.13
5.0.00.0070.06012.13
4.4.90.0100.02712.13
4.4.80.0130.03012.13
4.4.70.0130.03012.13
4.4.60.0130.03012.13
4.4.50.0130.03012.13
4.4.40.0130.04712.13
4.4.30.0100.01712.13
4.4.20.0070.03712.13
4.4.10.0070.03712.13
4.4.00.0070.03312.13
4.3.110.0100.03312.13
4.3.100.0100.02712.13
4.3.90.0100.01712.13
4.3.80.0200.02012.13
4.3.70.0070.03712.13
4.3.60.0100.03312.13
4.3.50.0200.02012.13
4.3.40.0100.05712.13
4.3.30.0070.01712.13
4.3.20.0030.03712.13
4.3.10.0070.03312.13
4.3.00.0000.02712.13

preferences:
44.79 ms | 400 KiB | 5 Q