3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function strToHex($string) { $hex=''; for ($i=0; $i < strlen($string); $i++) { $hex .= dechex(ord($string[$i])); } return $hex; } function hexToStr($hex) { $string=''; for ($i=0; $i < strlen($hex)-1; $i+=2) { $string .= chr(hexdec($hex[$i].$hex[$i+1])); } return $string; } $test = "ffff:eeee:dddd:cccc:bbbb:aaaa:9999:8888"; $testParts = explode(':', $test); $testHex = array(); foreach($testParts as $testPart){ array_push($testHex, strToHex($testPart)); //echo strToHex($testPart) . "<br>\n"; } $packed = pack('H H H H H H H H', $testParts[0], $testParts[1], $testParts[2], $testParts[3], $testParts[4], $testParts[5], $testParts[6], $testParts[7]); $unpacked = unpack('H H H H H H H H', $packed); $unpackedString = array(); //var_dump($testParts); //var_dump($testHex); var_dump($packed); var_dump($unpacked); foreach($unpacked as $unpack){ array_push($unpackedString, $unpack); } echo implode(':', $unpackedString); ?>

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).
Note: hhvm uses a JIT which only kicks in after a few runs. Since we run scripts only once, hhvm always runs slower.

VersionSystem time (s)User time (s)Memory (MiB)
7.2.60.0060.00616.84
7.1.200.0070.00715.64
7.1.70.0000.00817.29
7.1.60.0140.01019.32
7.1.50.0070.00716.63
7.1.00.0000.03722.45
7.0.200.0170.00714.91
7.0.140.0000.07322.15
7.0.100.0230.08720.08
7.0.90.0270.08020.02
7.0.80.0030.06319.96
7.0.70.0270.04319.87
7.0.60.0000.06719.95
7.0.50.0100.08320.25
7.0.40.0070.08320.05
7.0.30.0100.08320.15
7.0.20.0030.09020.15
7.0.10.0130.04320.02
7.0.00.0030.07020.14
5.6.280.0100.06720.77
5.6.250.0070.05320.48
5.6.240.0130.08020.59
5.6.230.0070.08320.53
5.6.220.0070.07320.57
5.6.210.0070.06320.61
5.6.200.0100.07021.04
5.6.190.0100.07721.03
5.6.180.0000.05721.05
5.6.170.0170.08021.02
5.6.160.0030.08321.05
5.6.150.0030.04321.08
5.6.140.0030.05020.93
5.6.130.0070.04721.05
5.6.120.0270.03721.00
5.6.110.0030.04721.04
5.6.100.0030.04721.07
5.6.90.0070.04021.02
5.6.80.0030.05020.39
5.6.70.0070.03720.40
5.6.60.0100.03320.37
5.6.50.0070.03720.43
5.6.40.0130.07320.42
5.6.30.0070.03720.44
5.6.20.0070.06020.46
5.6.10.0070.03720.32
5.6.00.0030.05020.34
5.5.380.0070.07320.40
5.5.370.0030.08020.42
5.5.360.0030.04320.38
5.5.350.0100.06720.46
5.5.340.0030.05720.88
5.5.330.0070.08720.79
5.5.320.0070.08320.79
5.5.310.0100.05020.74
5.5.300.0100.04020.88
5.5.290.0070.04020.87
5.5.280.0000.05020.89
5.5.270.0070.04320.80
5.5.260.0070.04020.84
5.5.250.0030.04320.74
5.5.240.0070.03320.24
5.5.230.0070.03720.12
5.5.220.0000.04720.22
5.5.210.0000.04020.25
5.5.200.0070.03720.16
5.5.190.0130.03320.23
5.5.180.0030.04320.13
5.5.160.0030.04020.28
5.5.150.0070.04020.15
5.5.140.0030.04020.24
5.5.130.0030.03320.25
5.5.120.0070.04020.21
5.5.110.0030.04020.21
5.5.100.0070.03720.13
5.5.90.0030.04020.14
5.5.80.0000.04020.17
5.5.70.0070.03320.10
5.5.60.0030.04020.01
5.5.50.0100.03320.08
5.5.40.0000.04019.93
5.5.30.0100.03020.02
5.5.20.0030.06020.08
5.5.10.0070.03720.03
5.5.00.0070.03720.04
5.4.450.0000.04719.38
5.4.440.0030.04019.40
5.4.430.0030.04019.30
5.4.420.0070.04019.20
5.4.410.0030.03719.29
5.4.400.0100.03019.10
5.4.390.0070.03719.21
5.4.380.0030.04019.12
5.4.370.0000.04019.04
5.4.360.0030.03719.13
5.4.350.0030.05019.18
5.4.340.0100.03319.18
5.4.320.0070.05719.09
5.4.310.0070.05719.21
5.4.300.0030.04019.16
5.4.290.0070.03319.23
5.4.280.0030.03319.13
5.4.270.0030.03019.10
5.4.260.0030.03718.85
5.4.250.0070.02719.11
5.4.240.0070.03719.12
5.4.230.0070.03719.20
5.4.220.0030.03718.94
5.4.210.0030.04019.03
5.4.200.0000.03318.85
5.4.190.0100.03018.83
5.4.180.0000.04018.86
5.4.170.0030.04018.99
5.4.160.0070.03319.21
5.4.150.0030.03719.00
5.4.140.0000.05716.38
5.4.130.0000.03716.38
5.4.120.0100.06016.46
5.4.110.0070.06316.41
5.4.100.0030.07016.40
5.4.90.0000.04016.48
5.4.80.0000.03716.47
5.4.70.0030.06716.39
5.4.60.0070.04716.40
5.4.50.0030.07316.45
5.4.40.0070.04716.53
5.4.30.0070.03316.47
5.4.20.0030.07716.41
5.4.10.0170.04716.35
5.4.00.0130.04015.89
5.3.290.0170.03014.73
5.3.280.0030.03714.71
5.3.270.0100.03014.62
5.3.260.0030.04014.64
5.3.250.0070.03314.63
5.3.240.0070.03314.64
5.3.230.0100.04014.59
5.3.220.0130.06314.70
5.3.210.0070.07014.68
5.3.200.0100.07014.57
5.3.190.0070.03314.50
5.3.180.0030.08014.52
5.3.170.0070.07014.62
5.3.160.0030.07714.63
5.3.150.0100.07714.55
5.3.140.0030.07314.63
5.3.130.0070.07314.59
5.3.120.0100.06714.59
5.3.110.0100.04014.64
5.3.100.0100.07014.03
5.3.90.0130.05714.05
5.3.80.0070.06313.91
5.3.70.0100.05314.09
5.3.60.0030.07713.99
5.3.50.0030.07313.97
5.3.40.0100.07013.84
5.3.30.0070.05313.94
5.3.20.0070.07313.77
5.3.10.0030.07313.59
5.3.00.0030.04313.57
5.2.170.0030.05311.21
5.2.160.0100.05311.21
5.2.150.0030.06011.04
5.2.140.0130.05711.23
5.2.130.0100.05711.20
5.2.120.0100.05311.04
5.2.110.0030.06311.20
5.2.100.0070.06011.20
5.2.90.0030.03711.04
5.2.80.0030.06011.13
5.2.70.0030.03711.21
5.2.60.0070.05311.12
5.2.50.0070.05311.09
5.2.40.0070.05310.99
5.2.30.0000.04011.10
5.2.20.0000.04011.03
5.2.10.0000.04010.90
5.2.00.0030.05710.79
5.1.60.0070.02310.17
5.1.50.0100.05010.17
5.1.40.0070.04710.17
5.1.30.0030.03710.44
5.1.20.0000.05310.41
5.1.10.0000.06310.17
5.1.00.0000.05710.17
5.0.50.0030.03710.17
5.0.40.0030.04710.17
5.0.30.0070.06310.17
5.0.20.0030.03710.17
5.0.10.0030.03010.17
5.0.00.0000.03710.17
4.4.90.0070.02310.17
4.4.80.0070.03310.17
4.4.70.0030.03010.17
4.4.60.0030.03710.17
4.4.50.0000.03010.17
4.4.40.0000.05310.17
4.4.30.0100.02310.17
4.4.20.0000.03710.17
4.4.10.0130.02710.17
4.4.00.0030.03310.17
4.3.110.0030.03010.17
4.3.100.0030.03310.17
4.3.90.0000.03310.17
4.3.80.0000.05710.17
4.3.70.0030.03310.17
4.3.60.0030.02710.17
4.3.50.0030.03310.17
4.3.40.0000.05010.17
4.3.30.0070.02010.17
4.3.20.0030.03010.17
4.3.10.0030.03010.17
4.3.00.0030.03310.17