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 $val; } if (!function_exists('json_encode')) { // crappy json_encode function that can handle our narrow input function json_encode($val) { if (is_string($val)) { return "\"$val\""; } if (is_int($val) { return strval($val); } return "???"; } } $vals = array(0, 1, 99, 100, 255, 256, 999, 1000, 9999, 10000, 65535, 65536, 99999, 100000, 999999, 1000000, 4294967295, 4294967296); foreach ($vals as $val) { $enc = json_encode(gdr_encode($val)); $dec = json_encode(gdr_decode($enc)); $val = json_encode($val); if (strlen($enc) > strlen($val)) { echo "$enc $val WORSE\n"; } else if (strlen($enc) == strlen($val)) { echo "$enc $val EQUAL\n"; } else { echo "$enc $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)
5.4.310.0050.04312.52
5.4.300.0100.04912.52
5.4.290.0070.04812.52
5.4.280.0140.04912.42
5.4.270.0090.05312.42
5.4.260.0100.05612.42
5.4.250.0070.07112.42
5.4.240.0100.05312.42
5.4.230.0120.05412.41
5.4.220.0060.03812.41
5.4.210.0050.03812.41
5.4.200.0100.03512.41
5.4.190.0070.05312.41
5.4.180.0100.05912.40
5.4.170.0130.05212.41
5.4.160.0110.05812.40
5.4.150.0090.05512.40
5.4.140.0390.07912.09
5.4.130.0140.08912.07
5.4.120.0210.07312.04
5.4.110.0130.07212.04
5.4.100.0220.06712.04
5.4.90.0110.05012.03
5.4.80.0070.05312.04
5.4.70.0100.04912.03
5.4.60.0090.05012.03
5.4.50.0130.04612.03
5.4.40.0140.06512.02
5.4.30.0220.06212.02
5.4.20.0170.06912.01
5.4.10.0170.04512.01
5.4.00.0140.05011.51
5.3.290.0070.04412.80
5.3.280.0120.06512.71
5.3.270.0060.04712.72
5.3.260.0070.06212.72
5.3.250.0090.05312.72
5.3.240.0060.05412.72
5.3.230.0090.05112.71
5.3.220.0090.05312.68
5.3.210.0070.04312.68
5.3.200.0090.03612.68
5.3.190.0090.03512.67
5.3.180.0080.03512.67
5.3.170.0070.04712.67
5.3.160.0090.05212.68
5.3.150.0110.04112.67
5.3.140.0110.05112.66
5.3.130.0060.04612.66
5.3.120.0070.04212.66
5.3.110.0090.03912.66
5.3.100.0050.03912.13
5.3.90.0060.03812.12
5.3.80.0090.03612.11
5.3.70.0070.03812.11
5.3.60.0060.03812.09
5.3.50.0090.03412.04
5.3.40.0070.03712.04
5.3.30.0040.04012.02
5.3.20.0060.03811.77
5.3.10.0080.03311.75
5.3.00.0040.03811.73
5.2.170.0080.0279.23
5.2.160.0050.0299.23
5.2.150.0040.0319.23
5.2.140.0040.0319.23
5.2.130.0070.0279.18
5.2.120.0040.0299.19
5.2.110.0080.0379.20
5.2.100.0050.0309.19
5.2.90.0030.0329.19
5.2.80.0050.0319.18
5.2.70.0060.0309.18
5.2.60.0080.0359.15
5.2.50.0070.0349.12
5.2.40.0080.0269.09
5.2.30.0060.0309.06
5.2.20.0070.0289.05
5.2.10.0050.0298.95
5.2.00.0090.0278.82
5.1.60.0030.0328.10
5.1.50.0040.0318.10
5.1.40.0020.0358.08
5.1.30.0080.0348.43
5.1.20.0030.0318.45
5.1.10.0040.0288.17
5.1.00.0020.0288.18
5.0.50.0030.0246.66
5.0.40.0030.0206.52
5.0.30.0020.0336.33
5.0.20.0030.0206.30
5.0.10.0030.0206.27
5.0.00.0070.0386.27
4.4.90.0040.0184.78
4.4.80.0020.0174.75
4.4.70.0040.0164.76
4.4.60.0050.0154.75
4.4.50.0030.0214.77
4.4.40.0040.0314.71
4.4.30.0030.0214.76
4.4.20.0030.0184.84
4.4.10.0020.0184.85
4.4.00.0040.0244.76
4.3.110.0020.0234.67
4.3.100.0030.0204.67
4.3.90.0030.0154.63
4.3.80.0030.0254.58
4.3.70.0020.0154.63
4.3.60.0010.0164.63
4.3.50.0020.0154.63
4.3.40.0020.0244.54
4.3.30.0010.0163.32
4.3.20.0030.0143.29
4.3.10.0000.0183.25
4.3.00.0030.0307.14

preferences:
132.65 ms | 1394 KiB | 7 Q