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(pack('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)
5.4.340.0050.03512.01
5.4.320.0050.04012.50
5.4.310.0030.04112.50
5.4.300.0050.03912.50
5.4.290.0050.04012.49
5.4.280.0070.03512.39
5.4.270.0090.03412.39
5.4.260.0070.03612.39
5.4.250.0070.03612.39
5.4.240.0050.03612.39
5.4.230.0100.03312.38
5.4.220.0070.04012.38
5.4.210.0090.03412.38
5.4.200.0040.04012.38
5.4.190.0090.03312.38
5.4.180.0050.04112.38
5.4.170.0050.03712.39
5.4.160.0040.03812.38
5.4.150.0050.03812.38
5.4.140.0030.03912.07
5.4.130.0060.03512.05
5.4.120.0080.03312.02
5.4.110.0050.03612.01
5.4.100.0090.03212.01
5.4.90.0060.04112.02
5.4.80.0070.03812.02
5.4.70.0050.03512.00
5.4.60.0080.03312.01
5.4.50.0030.03912.01
5.4.40.0010.03912.00
5.4.30.0050.03711.99
5.4.20.0070.03411.99
5.4.10.0050.03511.99
5.4.00.0060.04511.48
5.3.290.0040.05612.80
5.3.280.0060.03912.70
5.3.270.0070.04212.72
5.3.260.0060.03912.72
5.3.250.0080.03512.72
5.3.240.0030.04012.72
5.3.230.0060.03912.71
5.3.220.0120.05112.68
5.3.210.0060.04712.68
5.3.200.0020.04012.68
5.3.190.0070.03612.68
5.3.180.0040.03812.67
5.3.170.0080.03612.67
5.3.160.0050.03812.68
5.3.150.0070.03612.67
5.3.140.0060.03612.66
5.3.130.0030.04312.66
5.3.120.0060.03912.66
5.3.110.0060.04212.65
5.3.100.0080.03512.11
5.3.90.0060.03612.08
5.3.80.0050.03712.08
5.3.70.0030.03912.07
5.3.60.0050.03712.06
5.3.50.0030.03912.00
5.3.40.0080.03412.00
5.3.30.0030.03711.95
5.3.20.0060.04111.73
5.3.10.0070.03411.70
5.3.00.0040.03711.69
5.2.170.0050.0299.19
5.2.160.0050.0319.19
5.2.150.0050.0309.19
5.2.140.0040.0339.18
5.2.130.0070.0339.14
5.2.120.0030.0309.14
5.2.110.0040.0309.15
5.2.100.0030.0319.14
5.2.90.0050.0289.15
5.2.80.0050.0299.14
5.2.70.0050.0309.14
5.2.60.0030.0319.10
5.2.50.0060.0309.06
5.2.40.0030.0319.04
5.2.30.0040.0319.02
5.2.20.0030.0309.01
5.2.10.0070.0268.93
5.2.00.0040.0328.79
5.1.60.0020.0278.07
5.1.50.0040.0258.07
5.1.40.0050.0248.05
5.1.30.0060.0258.40
5.1.20.0040.0278.42
5.1.10.0060.0258.15
5.1.00.0090.0218.15
5.0.50.0040.0206.63
5.0.40.0040.0236.48
5.0.30.0020.0326.30
5.0.20.0040.0186.27
5.0.10.0040.0206.25
5.0.00.0030.0316.23
4.4.90.0020.0164.78
4.4.80.0050.0134.75
4.4.70.0050.0164.75
4.4.60.0070.0144.75
4.4.50.0040.0144.77
4.4.40.0050.0234.70
4.4.30.0020.0174.76
4.4.20.0040.0154.85
4.4.10.0030.0164.85
4.4.00.0040.0244.76
4.3.110.0050.0204.67
4.3.100.0020.0164.67
4.3.90.0030.0144.63
4.3.80.0030.0294.58
4.3.70.0060.0134.63
4.3.60.0040.0264.63
4.3.50.0040.0144.63
4.3.40.0040.0224.54
4.3.30.0020.0173.29
4.3.20.0040.0163.27
4.3.10.0050.0173.23
4.3.00.0030.01710.57

preferences:
141.6 ms | 1394 KiB | 7 Q