3v4l.org

run code in 300+ PHP versions simultaneously
<?php function pack_encode($val) { $str = array(); while ($val > 0) { $str .= chr($val & 0xFF) $val = $val >> 8; } // "/" json-encodes poorly and "=" is padding return str_replace( array('/', '='), array('_', ''), base64_encode(str) ); } for ($i=0; $i<256; %i++) { echo pack_encode($i*256) . "\n"; } /* $arr = array(); $packed = pack('N', 32767); for ($i=0; $i<strlen($packed); $i++) { $arr[$i] = ord($packed[$i]); } print_r($arr); function pack_encode($val) { $b64 = base64_encode(pack($format, $val)); return str_replace(array('/', '='), array('_', ''), $b64); // "/" json-encodes poorly and "=" is padding } function pack_decode($bin) { $b64 = str_replace('_', '/', $bin); // un-padded $data = unpack('C'.(length($bin)/2), base64_decode($b64, false)); $val = 0; foreach ($data as $v) { $val = ($val<<$width) | $v; } return $val; } $max = 32767; $n = 20; $step = intval($max/$n); for ($i=0; $i<=$n; $i++) { $val = $i*$step; $enc = pack_encode($val); $dec = pack_decode($val); echo "$enc $dec $val\n"; } */

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)
5.4.310.0040.04112.52
5.4.300.0070.03712.52
5.4.290.0050.04012.51
5.4.280.0070.03612.41
5.4.270.0090.04612.41
5.4.260.0140.05212.41
5.4.250.0080.04612.41
5.4.240.0060.04012.41
5.4.230.0060.04012.40
5.4.220.0100.03212.40
5.4.210.0070.03712.40
5.4.200.0090.03712.40
5.4.190.0050.05312.39
5.4.180.0050.05512.40
5.4.170.0090.03612.40
5.4.160.0030.04112.40
5.4.150.0040.05312.40
5.4.140.0060.05212.09
5.4.130.0070.04912.07
5.4.120.0060.05112.04
5.4.110.0080.03312.03
5.4.100.0040.03912.04
5.4.90.0070.03912.03
5.4.80.0090.03412.04
5.4.70.0060.03612.03
5.4.60.0080.04212.03
5.4.50.0030.03912.03
5.4.40.0070.03612.02
5.4.30.0020.04112.01
5.4.20.0050.04012.01
5.4.10.0060.03512.01
5.4.00.0020.04011.50
5.3.280.0040.04012.71
5.3.270.0100.03912.73
5.3.260.0050.04012.72
5.3.250.0060.03812.72
5.3.240.0070.05412.72
5.3.230.0080.05112.71
5.3.220.0110.05712.68
5.3.210.0100.05512.68
5.3.200.0080.05412.68
5.3.190.0090.05312.68
5.3.180.0120.05312.68
5.3.170.0050.05912.67
5.3.160.0040.05612.67
5.3.150.0080.05312.67
5.3.140.0100.05812.66
5.3.130.0050.05712.66
5.3.120.0110.03912.66
5.3.110.0100.03712.65
5.3.100.0090.03512.12
5.3.90.0080.03712.11
5.3.80.0080.03612.09
5.3.70.0060.05212.09
5.3.60.0080.05012.09
5.3.50.0100.04712.02
5.3.40.0060.05112.02
5.3.30.0060.05111.98
5.3.20.0070.04911.77
5.3.10.0090.04811.73
5.3.00.0060.05111.72
5.2.170.0100.0399.22
5.2.160.0100.0489.21
5.2.150.0080.0419.22
5.2.140.0070.0429.21
5.2.130.0060.0539.17
5.2.120.0070.0539.17
5.2.110.0030.0339.18
5.2.100.0050.0299.18
5.2.90.0060.0309.18
5.2.80.0080.0299.17
5.2.70.0060.0309.17
5.2.60.0050.0319.13
5.2.50.0030.0339.10
5.2.40.0030.0329.07
5.2.30.0040.0329.05
5.2.20.0020.0329.04
5.2.10.0040.0308.95
5.2.00.0060.0288.81
5.1.60.0020.0278.09
5.1.50.0020.0288.09
5.1.40.0020.0278.07
5.1.30.0040.0278.42
5.1.20.0090.0268.44
5.1.10.0060.0308.16
5.1.00.0060.0258.16
5.0.50.0050.0206.64
5.0.40.0030.0216.50
5.0.30.0050.0316.31
5.0.20.0020.0226.28
5.0.10.0030.0216.26
5.0.00.0050.0306.25
4.4.90.0010.0184.78
4.4.80.0050.0144.76
4.4.70.0030.0164.75
4.4.60.0030.0164.75
4.4.50.0020.0234.77
4.4.40.0070.0284.71
4.4.30.0030.0214.76
4.4.20.0040.0224.84
4.4.10.0070.0224.85
4.4.00.0040.0324.76
4.3.110.0050.0264.67
4.3.100.0060.0234.66
4.3.90.0040.0234.63
4.3.80.0040.0344.58
4.3.70.0050.0184.63
4.3.60.0030.0204.63
4.3.50.0040.0204.62
4.3.40.0030.0314.54
4.3.30.0030.0243.30
4.3.20.0020.0213.27
4.3.10.0040.0233.24
4.3.00.0000.0307.20

preferences:
140.17 ms | 1394 KiB | 7 Q