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) ); } for ($i=0; $i<32; $i++) { echo pack_encode((1<<$i) + 1) . "\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)
8.3.40.0140.00718.63
8.3.30.0060.00919.09
8.3.20.0000.00820.21
8.3.10.0060.00321.80
8.3.00.0060.00317.63
8.2.170.0070.00722.96
8.2.160.0030.01020.16
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0050.00326.16
8.2.120.0040.00421.09
8.2.110.0030.00620.34
8.2.100.0000.01217.78
8.2.90.0040.00418.03
8.2.80.0030.00517.97
8.2.70.0000.00917.48
8.2.60.0030.00618.16
8.2.50.0040.00418.07
8.2.40.0000.00818.16
8.2.30.0000.00718.04
8.2.20.0040.00417.85
8.2.10.0070.00017.93
8.2.00.0030.00617.66
8.1.270.0080.00023.97
8.1.260.0070.00026.35
8.1.250.0100.00328.09
8.1.240.0030.00622.45
8.1.230.0090.00320.88
8.1.220.0090.00017.79
8.1.210.0080.00018.90
8.1.200.0000.01017.22
8.1.190.0000.00817.23
8.1.180.0040.00418.10
8.1.170.0040.00418.56
8.1.160.0040.00422.05
8.1.150.0080.00018.87
8.1.140.0000.00717.32
8.1.130.0030.00317.80
8.1.120.0040.00417.40
8.1.110.0000.00817.49
8.1.100.0000.00717.37
8.1.90.0070.00017.49
8.1.80.0000.00717.45
8.1.70.0030.00717.40
8.1.60.0000.00917.64
8.1.50.0000.00817.41
8.1.40.0050.00317.58
8.1.30.0060.00317.51
8.1.20.0000.00817.64
8.1.10.0000.00717.46
8.1.00.0050.00317.30
8.0.300.0040.00419.85
8.0.290.0060.00316.75
8.0.280.0040.00418.45
8.0.270.0040.00417.11
8.0.260.0000.00617.15
8.0.250.0030.00316.89
8.0.240.0000.00716.91
8.0.230.0040.00416.93
8.0.220.0040.00416.79
8.0.210.0030.00316.79
8.0.200.0000.00716.95
8.0.190.0000.00716.86
8.0.180.0080.00016.92
8.0.170.0040.00416.89
8.0.160.0040.00416.84
8.0.150.0030.00316.69
8.0.140.0050.00316.87
8.0.130.0000.00513.29
8.0.120.0050.00316.84
8.0.110.0040.00416.92
8.0.100.0070.00016.82
8.0.90.0000.00816.93
8.0.80.0150.00316.81
8.0.70.0000.00716.71
8.0.60.0050.00216.71
8.0.50.0050.00316.65
8.0.30.0110.01117.27
8.0.20.0100.00917.40
8.0.10.0000.00716.83
8.0.00.0110.00916.83
7.4.330.0000.00515.09
7.4.320.0070.00016.58
7.4.300.0000.00616.52
7.4.290.0040.00416.64
7.4.280.0000.00916.57
7.4.270.0000.00616.55
7.4.260.0030.00316.61
7.4.250.0040.00416.46
7.4.240.0050.00216.63
7.4.230.0040.00416.64
7.4.220.0110.00716.64
7.4.210.0100.00316.40
7.4.200.0030.00316.34
7.4.160.0120.00316.57
7.4.150.0160.00317.40
7.4.140.0110.00917.86
7.4.130.0050.01516.58
7.4.120.0130.00516.49
7.4.110.0140.00816.76
7.4.100.0130.00316.54
7.4.90.0110.00616.53
7.4.80.0040.01519.39
7.4.70.0120.00616.43
7.4.60.0000.01716.55
7.4.50.0060.00316.57
7.4.40.0060.01216.38
7.4.30.0000.01516.42
7.4.00.0090.00614.64
7.3.330.0050.00013.16
7.3.320.0050.00013.29
7.3.310.0030.00316.19
7.3.300.0060.00016.29
7.3.290.0090.00616.27
7.3.280.0090.00916.25
7.3.270.0080.01217.40
7.3.260.0140.00316.40
7.3.250.0080.01016.45
7.3.240.0060.01216.34
7.3.230.0030.01416.39
7.3.210.0120.00616.50
7.3.200.0140.01119.39
7.3.190.0040.01416.24
7.3.180.0060.01016.52
7.3.170.0120.00316.30
7.3.160.0120.00616.42
7.2.330.0100.01016.59
7.2.320.0030.01416.70
7.2.310.0070.01016.73
7.2.300.0080.00816.65
7.2.290.0040.01216.51
7.2.00.0030.01319.34
7.1.100.0040.00418.05
7.1.70.0030.00516.93
7.1.60.0040.00717.12
7.1.50.0100.00316.73
7.1.00.0070.07322.47
7.0.200.0060.01016.79
7.0.140.0030.07021.99
7.0.60.0100.07720.02
7.0.50.0100.03717.91
7.0.40.0000.06720.23
7.0.30.0330.07020.05
7.0.20.0300.07320.15
7.0.10.0070.06320.29
7.0.00.0030.04020.15
5.6.280.0070.07021.13
5.6.210.0130.08320.50
5.6.200.0000.04718.19
5.6.190.0100.06720.39
5.6.180.0330.03320.65
5.6.170.0330.03720.62
5.6.160.0130.07720.39
5.6.150.0070.03718.28
5.6.140.0170.03318.18
5.6.130.0070.03718.14
5.6.120.0170.07321.15
5.6.110.0030.06321.15
5.6.100.0070.05321.14
5.6.90.0000.04321.00
5.6.80.0030.05320.36
5.5.350.0200.06320.47
5.5.340.0230.02717.95
5.5.330.0000.04720.35
5.5.320.3200.03720.20
5.5.310.0300.06720.35
5.5.300.0030.05317.95
5.5.290.0130.07317.93
5.5.280.0070.07320.77
5.5.270.0030.07720.75
5.5.260.0100.08320.68
5.5.250.0070.03720.61
5.5.240.0070.03320.19
5.4.450.0430.04719.63
5.4.440.0570.06019.45
5.4.430.0100.05719.39
5.4.420.0100.05319.68
5.4.410.0130.05019.07
5.4.400.0130.05018.62
5.4.390.0070.06318.83
5.4.380.0100.05318.72
5.4.370.0130.05018.68
5.4.360.0130.04718.67
5.4.350.0050.04112.02
5.4.340.0070.03812.02
5.4.320.0110.04512.51
5.4.310.0070.03912.50
5.4.300.0110.04612.51
5.4.290.0080.04012.50
5.4.280.0090.03612.40
5.4.270.0070.03712.40
5.4.260.0060.04612.40
5.4.250.0070.05112.40
5.4.240.0100.03612.40
5.4.230.0070.04012.39
5.4.220.0070.03812.39
5.4.210.0030.03912.39
5.4.200.0100.04312.39
5.4.190.0060.03712.38
5.4.180.0060.04512.39
5.4.170.0060.03612.39
5.4.160.0070.03912.39
5.4.150.0060.03512.39
5.4.140.0060.03612.07
5.4.130.0080.03612.05
5.4.120.0060.04812.02
5.4.110.0090.04212.01
5.4.100.0080.04712.02
5.4.90.0070.04612.01
5.4.80.0070.03912.02
5.4.70.0110.04112.01
5.4.60.0100.04412.00
5.4.50.0080.04212.01
5.4.40.0070.04912.00
5.4.30.0080.04711.99
5.4.20.0060.05411.99
5.4.10.0080.04912.00
5.4.00.0070.05011.48
5.3.290.0070.04612.80
5.3.280.0060.05312.71
5.3.270.0090.05212.73
5.3.260.0100.05112.72
5.3.250.0060.05412.72
5.3.240.0080.05212.72
5.3.230.0060.05312.71
5.3.220.0100.05112.68
5.3.210.0110.05012.68
5.3.200.0040.05612.68
5.3.190.0070.04512.68
5.3.180.0060.03912.68
5.3.170.0050.03812.67
5.3.160.0070.04012.68
5.3.150.0110.04012.68
5.3.140.0060.04612.66
5.3.130.0090.03712.66
5.3.120.0050.04912.66
5.3.110.0130.04612.66
5.3.100.0080.04012.12
5.3.90.0080.03612.10
5.3.80.0050.03812.09
5.3.70.0080.04112.09
5.3.60.0060.03812.08
5.3.50.0090.04512.02
5.3.40.0080.03612.02
5.3.30.0050.04011.98
5.3.20.0060.03611.77
5.3.10.0080.03411.73
5.3.00.0060.03711.71
5.2.170.0070.0299.21
5.2.160.0060.0279.22
5.2.150.0110.0269.21
5.2.140.0070.0349.21
5.2.130.0070.0319.18
5.2.120.0060.0319.17
5.2.110.0030.0319.18
5.2.100.0040.0309.18
5.2.90.0050.0309.17
5.2.80.0040.0329.17
5.2.70.0030.0349.17
5.2.60.0050.0319.13
5.2.50.0040.0339.10
5.2.40.0080.0289.08
5.2.30.0050.0339.05
5.2.20.0050.0379.03
5.2.10.0020.0298.94
5.2.00.0050.0298.80
5.1.60.0040.0248.09
5.1.50.0020.0268.09
5.1.40.0050.0248.06
5.1.30.0040.0328.41
5.1.20.0050.0278.44
5.1.10.0050.0338.16
5.1.00.0090.0228.16
5.0.50.0070.0216.64
5.0.40.0040.0186.50
5.0.30.0030.0326.32
5.0.20.0050.0186.28
5.0.10.0040.0196.26
5.0.00.0020.0326.25
4.4.90.0030.0154.78
4.4.80.0040.0144.75
4.4.70.0040.0144.75
4.4.60.0030.0154.75
4.4.50.0030.0154.77
4.4.40.0040.0244.71
4.4.30.0020.0164.76
4.4.20.0030.0164.84
4.4.10.0010.0174.85
4.4.00.0060.0234.76
4.3.110.0020.0174.67
4.3.100.0050.0144.67
4.3.90.0050.0174.64
4.3.80.0060.0264.58
4.3.70.0060.0114.63
4.3.60.0030.0144.62
4.3.50.0020.0174.63
4.3.40.0040.0324.54
4.3.30.0070.0183.30
4.3.20.0040.0203.28
4.3.10.0030.0163.24
4.3.00.0130.0276.89

preferences:
40.27 ms | 400 KiB | 5 Q