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)
8.3.60.0100.00718.39
8.3.50.0070.00822.82
8.3.40.0090.00618.96
8.3.30.0080.00619.07
8.3.20.0040.00420.34
8.3.10.0000.00821.70
8.3.00.0080.00017.75
8.2.180.0040.01516.50
8.2.170.0110.00322.96
8.2.160.0110.00420.57
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0110.00726.16
8.2.120.0050.00321.08
8.2.110.0100.00022.24
8.2.100.0060.00617.84
8.2.90.0050.00317.75
8.2.80.0050.00318.86
8.2.70.0050.00317.75
8.2.60.0060.00317.93
8.2.50.0030.00618.07
8.2.40.0040.00417.87
8.2.30.0000.01118.15
8.2.20.0000.00817.80
8.2.10.0000.00818.00
8.2.00.0040.00417.82
8.1.280.0120.00325.92
8.1.270.0060.00323.84
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0000.00922.20
8.1.230.0040.00822.64
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0060.00317.36
8.1.190.0040.00417.22
8.1.180.0030.00519.13
8.1.170.0000.00818.66
8.1.160.0040.00418.88
8.1.150.0050.00218.89
8.1.140.0040.00417.40
8.1.130.0070.00017.73
8.1.120.0040.00417.45
8.1.110.0030.00517.37
8.1.100.0000.00717.50
8.1.90.0040.00417.43
8.1.80.0040.00417.48
8.1.70.0070.00317.44
8.1.60.0030.00517.46
8.1.50.0040.00417.45
8.1.40.0040.00417.57
8.1.30.0050.00317.67
8.1.20.0040.00417.65
8.1.10.0000.00717.57
8.1.00.0050.00517.52
8.0.300.0100.00018.77
8.0.290.0000.00716.88
8.0.280.0070.00018.32
8.0.270.0040.00417.29
8.0.260.0000.00617.24
8.0.250.0000.00716.97
8.0.240.0050.00316.92
8.0.230.0040.00416.88
8.0.220.0040.00416.85
8.0.210.0000.00716.96
8.0.200.0070.00016.90
8.0.190.0030.00317.04
8.0.180.0000.00717.01
8.0.170.0000.00816.94
8.0.160.0030.00316.97
8.0.150.0040.00416.90
8.0.140.0040.00416.80
8.0.130.0000.00613.40
8.0.120.0000.01016.87
8.0.110.0050.00316.88
8.0.100.0040.00416.80
8.0.90.0020.00516.81
8.0.80.0060.01616.97
8.0.70.0040.00416.87
8.0.60.0040.00416.98
8.0.50.0050.00316.89
8.0.30.0100.01217.04
8.0.20.0150.00717.40
8.0.10.0000.00716.89
8.0.00.0110.01016.71
7.4.330.0000.00615.14
7.4.320.0000.00716.59
7.4.300.0040.00416.61
7.4.290.0020.00516.59
7.4.280.0060.00316.59
7.4.270.0030.00516.40
7.4.260.0030.00716.50
7.4.250.0060.00316.44
7.4.240.0020.00616.47
7.4.230.0000.00816.58
7.4.220.0160.01616.64
7.4.210.0120.01216.64
7.4.200.0040.00416.57
7.4.160.0080.01116.44
7.4.150.0150.00617.40
7.4.140.0160.01117.86
7.4.130.0110.01116.55
7.4.120.0120.00916.50
7.4.110.0040.01616.48
7.4.100.0070.01816.44
7.4.90.0080.01616.48
7.4.80.0110.01919.39
7.4.70.0140.00716.50
7.4.60.0050.01616.48
7.4.50.0020.00516.38
7.4.40.0110.01116.34
7.4.30.0130.01316.58
7.4.00.0060.00615.06
7.3.330.0030.00313.33
7.3.320.0030.00313.32
7.3.310.0040.00416.27
7.3.300.0030.00316.37
7.3.290.0090.00916.32
7.3.280.0090.01316.29
7.3.270.0120.01217.40
7.3.260.0140.00716.58
7.3.250.0120.01016.43
7.3.240.0100.01416.61
7.3.230.0130.00716.55
7.3.210.0080.01516.42
7.3.200.0110.01419.39
7.3.190.0140.00816.43
7.3.180.0110.01116.57
7.3.170.0060.01216.45
7.3.160.0100.01616.34
7.2.330.0090.01916.91
7.2.320.0100.01716.72
7.2.310.0050.01616.72
7.2.300.0080.01216.41
7.2.290.0110.01016.66
7.2.60.0000.01317.03
7.2.00.0030.01219.51
7.1.200.0040.00815.79
7.1.100.0000.01317.96
7.1.70.0040.00717.31
7.1.60.0170.01019.40
7.1.50.0070.01716.94
7.1.00.0000.08022.40
7.0.200.0030.00516.73
7.0.140.0000.08022.07
7.0.60.0070.06020.04
7.0.50.0170.04317.83
7.0.40.0100.08020.09
7.0.30.0330.03720.07
7.0.20.0400.06020.36
7.0.10.0070.08019.71
7.0.00.0100.06720.25
5.6.280.0070.07321.07
5.6.210.0100.05720.50
5.6.200.0100.07018.16
5.6.190.0070.07320.36
5.6.180.0130.04320.27
5.6.170.0200.08320.52
5.6.160.0070.09020.16
5.6.150.0030.04718.19
5.6.140.0030.04018.11
5.6.130.0070.07018.14
5.6.120.0100.08020.97
5.6.110.0170.07321.05
5.6.100.0100.08021.12
5.6.90.0100.08021.13
5.6.80.0100.08020.49
5.5.350.0130.03720.45
5.5.340.0130.06017.98
5.5.330.0070.03720.47
5.5.320.0200.05720.20
5.5.310.0430.07020.20
5.5.300.0070.08017.96
5.5.290.0000.05017.98
5.5.280.0170.07020.66
5.5.270.0100.08720.88
5.5.260.0030.07320.76
5.5.250.0170.06020.66
5.5.240.0030.08320.36
5.4.450.0170.04019.53
5.4.440.0200.04019.31
5.4.430.0370.06719.57
5.4.420.0200.05319.38
5.4.410.0200.08319.21
5.4.400.0300.05018.84
5.4.390.1200.05719.22
5.4.380.0330.06318.98
5.4.370.0300.04019.13
5.4.360.0300.06719.25
5.4.350.0300.03318.95
5.4.340.0170.03719.25
5.4.320.0330.07319.09
5.4.310.0110.05412.50
5.4.300.0110.04812.50
5.4.290.0100.04512.50
5.4.280.0070.03812.40
5.4.270.0090.03512.40
5.4.260.0070.04312.40
5.4.250.0120.04112.40
5.4.240.0110.04312.40
5.4.230.0090.04412.39
5.4.220.0120.04912.39
5.4.210.0090.04112.39
5.4.200.0060.05512.39
5.4.190.0090.05212.39
5.4.180.0140.04612.39
5.4.170.0080.05412.39
5.4.160.0120.05012.39
5.4.150.0100.04912.39
5.4.140.0060.05512.07
5.4.130.0050.05612.06
5.4.120.0070.03712.02
5.4.110.0070.05412.02
5.4.100.0100.04912.02
5.4.90.0070.05512.02
5.4.80.0050.05612.01
5.4.70.0110.03812.01
5.4.60.0090.04212.01
5.4.50.0060.04712.01
5.4.40.0070.03712.00
5.4.30.0050.04211.99
5.4.20.0080.04012.00
5.4.10.0330.07016.52
5.4.00.4370.03315.76
5.3.290.3330.03314.69
5.3.280.3100.04314.59
5.3.270.3870.03714.82
5.3.260.1000.07014.61
5.3.250.2900.03714.58
5.3.240.3200.04014.53
5.3.230.0130.04314.50
5.3.220.2870.03714.54
5.3.210.3270.04314.68
5.3.200.0330.03314.58
5.3.190.0030.04714.46
5.3.180.0270.07014.48
5.3.170.0300.06014.53
5.3.160.0400.03314.64
5.3.150.0600.05714.64
5.3.140.0430.05314.63
5.3.130.3700.04714.55
5.3.120.0630.06014.62
5.3.110.0600.03314.54
5.3.100.3430.03314.18
5.3.90.0370.04314.02
5.3.80.0430.06013.94
5.3.70.0470.03713.93

preferences:
50.95 ms | 401 KiB | 5 Q