3v4l.org

run code in 300+ PHP versions simultaneously
<?php function gdr_encode($val) { $bin = ''; while ($val > 0) { $bin .= chr($val & 0xFF); $val >>= 8; } return str_replace(array('/', '='), array('_', ''), base64_encode($bin)); } function gdr_decode($str) { $bin = base64_decode(str_replace('_', '/', $str)); $val = 0; for ($i=strlen($bin)-1; $i>=0; $i--) { $val |= ord($bin[$i]) << $i*8; } return $val; } function test_enc($val) { $enc = gdr_encode($val); $dec = gdr_decode($enc); if ($val === $dec) { echo "$enc $val\n"; } else { echo "$enc $valĀ ERROR: gdr_decode($enc) == $dec\n"; } } foreach (array(0, 1, 99, 100, 255, 256, 999, 1000, 9999, 10000) as $val) { test_enc($val); } echo '\n'; // seed rng for consistent values if (phpversion() < '5.2.1') { die('old rng'); } mt_srand(42); for ($i=0; $i<63; $i++) { $val = 1<<$i; $val += mt_rand(0, $val/2); test_enc($val); }

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)
7.2.00.0030.00719.52
7.1.70.0090.00617.36
7.1.60.0090.01519.40
7.1.50.0070.01716.78
7.1.00.0030.07322.40
7.0.200.0030.00316.92
7.0.140.0030.07022.00
7.0.60.0070.08019.93
7.0.50.0070.05317.86
7.0.40.0000.05020.04
7.0.30.0270.04320.07
7.0.20.0400.07020.34
7.0.10.0130.08320.05
7.0.00.0100.08020.06
5.6.280.0100.07021.10
5.6.210.0100.04720.48
5.6.200.0030.09018.21
5.6.190.0070.05320.63
5.6.180.0330.04320.47
5.6.170.0400.07320.51
5.6.160.0030.08720.54
5.6.150.0100.04718.18
5.6.140.0030.06718.21
5.6.130.0130.07718.11
5.6.120.0030.04321.02
5.6.110.0100.06321.04
5.6.100.0100.08021.12
5.6.90.0130.05021.13
5.6.80.0100.08020.42
5.5.350.0230.08020.50
5.5.340.0100.07717.98
5.5.330.0070.08320.34
5.5.320.0300.08020.35
5.5.310.0330.06020.35
5.5.300.0100.03317.99
5.5.290.0070.07718.02
5.5.280.0030.08720.78
5.5.270.0030.04020.77
5.5.260.0030.08720.80
5.5.250.0000.05020.79
5.5.240.0070.07320.24
5.4.450.0230.05319.71
5.4.440.0800.06319.55
5.4.430.0700.07019.31
5.4.420.0900.04719.63
5.4.410.0870.04719.47
5.4.400.0330.06018.76
5.4.390.0330.05718.84
5.4.380.0100.05018.61
5.4.370.0200.03718.60
5.4.360.0100.03718.72
5.4.350.0090.05512.03
5.4.340.0040.04412.02
5.4.320.0060.03612.50
5.4.310.0060.03812.50
5.4.300.0080.03612.51
5.4.290.0060.04612.50
5.4.280.0050.03512.40
5.4.270.0050.03712.40
5.4.260.0080.03612.40
5.4.250.0060.03912.40
5.4.240.0060.04112.40
5.4.230.0070.05412.40
5.4.220.0090.05112.39
5.4.210.0090.03612.39
5.4.200.0080.03812.39
5.4.190.0030.04012.39
5.4.180.0070.03612.39
5.4.170.0090.03412.40
5.4.160.0050.03712.40
5.4.150.0060.03612.39
5.4.140.0050.04312.07
5.4.130.0040.05312.06
5.4.120.0050.03812.02
5.4.110.0060.03712.02
5.4.100.0050.04312.02
5.4.90.0080.04212.02
5.4.80.0070.04012.02
5.4.70.0130.04112.01
5.4.60.0030.03812.01
5.4.50.0050.03612.01
5.4.40.0090.03212.00
5.4.30.0040.03712.00
5.4.20.0070.03312.00
5.4.10.0060.03512.00
5.4.00.0070.05011.48
5.3.290.0050.04112.80
5.3.280.0110.04912.71
5.3.270.0060.05512.72
5.3.260.0100.04712.72
5.3.250.0050.03812.72
5.3.240.0060.03912.71
5.3.230.0070.03812.71
5.3.220.0060.03912.68
5.3.210.0040.04312.68
5.3.200.0110.03412.68
5.3.190.0050.04312.68
5.3.180.0080.04112.67
5.3.170.0040.03912.67
5.3.160.0040.03912.67
5.3.150.0080.03712.68
5.3.140.0090.03312.66
5.3.130.0040.04212.66
5.3.120.0050.04112.66
5.3.110.0050.04012.66
5.3.100.0070.03712.13
5.3.90.0060.03712.11
5.3.80.0070.03512.10
5.3.70.0070.03512.10
5.3.60.0050.03812.08
5.3.50.0050.03812.03
5.3.40.0030.03912.03
5.3.30.0060.03412.00
5.3.20.0050.03511.78
5.3.10.0040.03711.73
5.3.00.0040.04011.72
5.2.170.0070.0439.23
5.2.160.0050.0449.23
5.2.150.0030.0469.23
5.2.140.0030.0379.23
5.2.130.0040.0349.19
5.2.120.0040.0339.19
5.2.110.0050.0429.20
5.2.100.0110.0369.19
5.2.90.0050.0379.19
5.2.80.0040.0339.19
5.2.70.0070.0299.19
5.2.60.0060.0299.14
5.2.50.0040.0319.10
5.2.40.0040.0309.09
5.2.30.0070.0309.06
5.2.20.0080.0279.05
5.2.10.0050.0298.95
5.2.00.0040.0298.82
5.1.60.0060.0218.11
5.1.50.0040.0248.10
5.1.40.0030.0258.08
5.1.30.0010.0288.43
5.1.20.0060.0258.45
5.1.10.0060.0248.18
5.1.00.0050.0258.18
5.0.50.0060.0196.66
5.0.40.0050.0196.52
5.0.30.0040.0316.33
5.0.20.0080.0256.32
5.0.10.0030.0296.30
5.0.00.0030.0426.30
4.4.90.0050.0244.78
4.4.80.0020.0244.76
4.4.70.0050.0164.75
4.4.60.0040.0154.75
4.4.50.0040.0194.77
4.4.40.0040.0254.71
4.4.30.0020.0184.76
4.4.20.0010.0174.85
4.4.10.0040.0204.85
4.4.00.0020.0254.76
4.3.110.0020.0164.67
4.3.100.0040.0144.66
4.3.90.0010.0164.64
4.3.80.0050.0224.59
4.3.70.0020.0164.63
4.3.60.0070.0114.63
4.3.50.0030.0154.63
4.3.40.0020.0274.54
4.3.30.0040.0163.35
4.3.20.0010.0183.32
4.3.10.0020.0153.28
4.3.00.0030.0237.16

preferences:
32.16 ms | 400 KiB | 5 Q