3v4l.org

run code in 300+ PHP versions simultaneously
<?php function pack_encode($val) { $str = ''; while ($val > 0) { $str .= chr($val & 0xFF); $val = $val >> 8; } // "/" json-encodes poorly and "=" is padding return str_replace( array('/', '='), array('_', ''), base64_encode($str) ); } function pack_decode($bin) { $str = base64_decode(str_replace('_', '/', $bin)); $val = 0; for ($i=0; $i<strlen($str); $i++) { $val |= (ord($str[$i]) << ($i * 8)); } return $val; } for ($i=0; $i<32; $i++) { $val = 1<<$i; $enc = pack_encode($val); $dec = pack_decode($enc); echo "$val => $enc => $dec\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)
8.3.60.0120.00618.53
8.3.50.0070.01123.01
8.3.40.0100.01018.84
8.3.30.0110.00419.27
8.3.20.0040.00420.08
8.3.10.0080.00021.54
8.3.00.0080.00017.46
8.2.180.0040.01116.63
8.2.170.0070.01022.96
8.2.160.0110.00320.57
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0040.01126.16
8.2.120.0080.00021.03
8.2.110.0060.00320.27
8.2.100.0110.00017.91
8.2.90.0040.00419.36
8.2.80.0000.00817.97
8.2.70.0000.00817.63
8.2.60.0040.00417.93
8.2.50.0030.00618.07
8.2.40.0040.00418.16
8.2.30.0000.00718.03
8.2.20.0000.00817.80
8.2.10.0040.00418.05
8.2.00.0030.00517.65
8.1.280.0120.00325.92
8.1.270.0090.00023.87
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0000.00922.12
8.1.230.0040.00721.04
8.1.220.0000.00817.79
8.1.210.0000.00818.77
8.1.200.0030.00717.35
8.1.190.0040.00417.23
8.1.180.0000.00818.10
8.1.170.0000.00918.66
8.1.160.0020.00521.82
8.1.150.0070.00018.83
8.1.140.0000.00717.28
8.1.130.0000.00717.81
8.1.120.0000.00717.36
8.1.110.0040.00417.27
8.1.100.0070.00017.33
8.1.90.0070.00017.32
8.1.80.0070.00017.46
8.1.70.0060.00317.40
8.1.60.0040.00417.60
8.1.50.0040.00417.52
8.1.40.0060.00317.40
8.1.30.0040.00417.52
8.1.20.0030.00517.68
8.1.10.0000.00717.58
8.1.00.0000.00917.59
8.0.300.0070.00018.77
8.0.290.0070.00016.63
8.0.280.0030.00518.43
8.0.270.0040.00417.35
8.0.260.0030.00317.31
8.0.250.0020.00516.99
8.0.240.0030.00316.86
8.0.230.0000.00716.85
8.0.220.0040.00416.80
8.0.210.0030.00316.82
8.0.200.0030.00316.96
8.0.190.0030.00316.90
8.0.180.0000.00716.92
8.0.170.0000.00816.96
8.0.160.0030.00316.93
8.0.150.0000.00716.86
8.0.140.0000.00716.76
8.0.130.0030.00313.43
8.0.120.0030.00616.85
8.0.110.0050.00216.75
8.0.100.0040.00416.89
8.0.90.0040.00416.96
8.0.80.0090.01216.88
8.0.70.0070.00016.77
8.0.60.0000.00716.78
8.0.50.0050.00316.77
8.0.30.0120.01017.04
8.0.20.0100.00917.40
8.0.10.0000.00816.80
8.0.00.0030.01616.95
7.4.330.0000.00515.00
7.4.320.0030.00316.38
7.4.300.0030.00316.48
7.4.290.0000.00716.64
7.4.280.0040.00416.57
7.4.270.0030.00316.60
7.4.260.0060.00316.62
7.4.250.0040.00416.44
7.4.240.0040.00316.48
7.4.230.0000.00716.55
7.4.220.0060.01216.58
7.4.210.0070.00816.55
7.4.200.0030.00316.72
7.4.160.0040.01216.55
7.4.150.0140.00717.40
7.4.140.0090.01117.86
7.4.130.0090.00816.39
7.4.120.0100.00716.67
7.4.110.0090.00916.71
7.4.100.0090.00616.60
7.4.90.0110.00716.64
7.4.80.0120.00919.39
7.4.70.0080.00816.62
7.4.60.0140.00316.57
7.4.50.0090.00016.60
7.4.40.0120.00616.25
7.4.30.0140.00316.64
7.4.00.0110.00615.12
7.3.330.0000.00613.35
7.3.320.0000.00513.40
7.3.310.0030.00316.48
7.3.300.0070.00016.25
7.3.290.0070.01416.31
7.3.280.0100.00516.35
7.3.270.0030.01417.40
7.3.260.0110.01116.30
7.3.250.0110.00816.50
7.3.240.0090.00916.52
7.3.230.0120.01216.51
7.3.210.0090.00916.36
7.3.200.0130.01019.39
7.3.190.0040.01216.35
7.3.180.0070.01016.63
7.3.170.0000.01516.40
7.3.160.0160.00716.36
7.3.120.0040.01414.93
7.3.110.0070.01114.48
7.3.100.0040.01414.34
7.3.90.0060.00915.16
7.3.80.0070.01114.89
7.3.70.0070.00714.97
7.3.60.0030.01314.91
7.3.50.0100.00314.76
7.3.40.0070.00714.76
7.3.30.0040.01114.61
7.3.20.0100.00316.80
7.3.10.0070.00816.68
7.3.00.0100.00316.69
7.2.330.0090.00916.72
7.2.320.0100.00716.40
7.2.310.0070.01016.93
7.2.300.0040.01216.52
7.2.290.0060.01016.83
7.2.250.0110.00614.96
7.2.240.0120.00915.03
7.2.230.0100.00715.04
7.2.220.0030.00615.27
7.2.210.0040.00814.91
7.2.200.0000.00915.32
7.2.190.0030.01315.07
7.2.180.0000.01114.98
7.2.170.0000.01415.24
7.2.130.0160.00316.73
7.2.120.0120.00316.91
7.2.110.0040.01116.83
7.2.100.0090.00916.91
7.2.90.0140.00917.02
7.2.80.0030.01616.83
7.2.70.0090.00916.92
7.2.60.0130.00616.95
7.2.50.0030.01117.08
7.2.40.0100.00717.02
7.2.30.0030.01416.89
7.2.20.0060.00916.89
7.2.10.0100.00317.07
7.2.00.0080.00618.16
7.1.330.0120.00315.93
7.1.320.0030.00715.90
7.1.310.0100.00615.76
7.1.300.0060.00315.79
7.1.290.0000.01115.64
7.1.280.0000.01415.92
7.1.270.0080.00415.81
7.1.260.0060.00915.84
7.1.250.0040.01116.04
7.1.100.0030.00918.16
7.1.70.0000.00817.34
7.1.60.0000.01117.39
7.1.50.0130.01017.00
7.1.00.0030.07722.36
7.0.200.0040.01416.97
7.0.140.0030.07721.90
7.0.60.0070.07319.87
7.0.50.0030.08717.89
7.0.40.0100.07020.32
7.0.30.0230.08720.13
7.0.20.0070.06320.24
7.0.10.0130.08320.15
7.0.00.0030.09020.16
5.6.280.0130.06720.78
5.6.210.0070.07020.74
5.6.200.0100.06718.20
5.6.190.0030.04320.67
5.6.180.0200.08320.68
5.6.170.0330.07020.52
5.6.160.0100.07720.39
5.6.150.0030.04018.22
5.6.140.0100.08018.27
5.6.130.0030.07018.27
5.6.120.0000.04321.15
5.6.110.0170.07721.09
5.6.100.0030.05320.99
5.6.90.0030.04721.13
5.6.80.0100.06320.41
5.5.350.0130.08720.34
5.5.340.0100.04717.95
5.5.330.0000.05020.35
5.5.320.0130.06720.35
5.5.310.0370.05020.34
5.5.300.0070.04017.94
5.5.290.0070.05317.94
5.5.280.0070.08720.81
5.5.270.0070.05720.77
5.5.260.0070.09320.62
5.5.250.0100.06020.72
5.5.240.0070.04020.22
5.4.450.0830.06019.48
5.4.440.0070.06319.66
5.4.430.0130.05719.63
5.4.420.0070.06019.43
5.4.410.0330.06019.36
5.4.400.0270.06718.77
5.4.390.0430.06318.73
5.4.380.0170.06018.79
5.4.370.0200.03718.67
5.4.360.0100.06018.71
5.4.350.0120.09512.03
5.4.340.0060.03912.02
5.4.320.0040.04112.51
5.4.310.0120.04712.50
5.4.300.0050.04312.51
5.4.290.0070.04012.50
5.4.280.0060.03512.41
5.4.270.0050.03812.40
5.4.260.0060.03812.40
5.4.250.0060.03912.40
5.4.240.0070.03812.40
5.4.230.0100.05612.39
5.4.220.0080.05912.40
5.4.210.0070.06612.39
5.4.200.0040.05912.39
5.4.190.0080.05412.39
5.4.180.0100.05312.39
5.4.170.0090.04812.39
5.4.160.0080.03912.39
5.4.150.0060.04812.39
5.4.140.0040.04012.07
5.4.130.0080.03712.07
5.4.120.0050.03912.02
5.4.110.0060.04412.02
5.4.100.0060.04012.02
5.4.90.0070.03812.01
5.4.80.0110.03712.02
5.4.70.0090.03412.01
5.4.60.0030.03812.01
5.4.50.0040.03812.02
5.4.40.0050.03912.00
5.4.30.0090.04812.00
5.4.20.0030.04812.00
5.4.10.0050.03612.00
5.4.00.0080.03411.48
5.3.290.0080.04012.80
5.3.280.0060.03812.71
5.3.270.0050.04112.72
5.3.260.0060.03912.72
5.3.250.0040.03812.72
5.3.240.0060.03812.72
5.3.230.0080.03512.71
5.3.220.0070.03612.68
5.3.210.0080.03912.68
5.3.200.0100.03712.68
5.3.190.0080.04312.68
5.3.180.0040.04112.67
5.3.170.0060.03812.67
5.3.160.0040.05612.67
5.3.150.0090.05212.67
5.3.140.0090.04212.66
5.3.130.0080.04812.66
5.3.120.0120.05712.65
5.3.110.0090.05512.66
5.3.100.0110.06912.13
5.3.90.0080.04112.11
5.3.80.0060.05212.10
5.3.70.0030.04012.11
5.3.60.0030.04312.08
5.3.50.0070.03712.03
5.3.40.0090.03512.03
5.3.30.0100.03311.99
5.3.20.0040.03811.77
5.3.10.0070.03511.73
5.3.00.0080.05411.72
5.2.170.0080.0449.23
5.2.160.0070.0479.23
5.2.150.0080.0389.22
5.2.140.0040.0359.22
5.2.130.0040.0319.18
5.2.120.0090.0359.18
5.2.110.0060.0289.19
5.2.100.0060.0289.19
5.2.90.0080.0369.19
5.2.80.0060.0359.18
5.2.70.0030.0329.18
5.2.60.0030.0329.14
5.2.50.0060.0459.11
5.2.40.0060.0409.09
5.2.30.0060.0319.06
5.2.20.0070.0279.04
5.2.10.0060.0298.95
5.2.00.0060.0298.81
5.1.60.0060.0238.10
5.1.50.0050.0248.09
5.1.40.0030.0268.07
5.1.30.0030.0288.42
5.1.20.0040.0278.45
5.1.10.0030.0348.17
5.1.00.0080.0348.17
5.0.50.0050.0326.64
5.0.40.0050.0356.51
5.0.30.0030.0466.32
5.0.20.0030.0286.29
5.0.10.0040.0226.27
5.0.00.0040.0376.26
4.4.90.0030.0224.78
4.4.80.0040.0154.76
4.4.70.0010.0184.75
4.4.60.0020.0184.75
4.4.50.0020.0174.77
4.4.40.0050.0244.71
4.4.30.0040.0154.76
4.4.20.0040.0154.84
4.4.10.0010.0184.84
4.4.00.0040.0254.76
4.3.110.0030.0164.67
4.3.100.0060.0174.66
4.3.90.0040.0194.63
4.3.80.0090.0304.58
4.3.70.0030.0224.63
4.3.60.0040.0244.63
4.3.50.0050.0254.62
4.3.40.0050.0354.54
4.3.30.0030.0233.31
4.3.20.0020.0233.29
4.3.10.0010.0183.25
4.3.00.0130.0277.15

preferences:
41.07 ms | 400 KiB | 5 Q