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 => $dec\n"; } for ($i=1; $i<1<<32; $i=$i<<1) { $enc = pack_encode($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)
8.3.60.0070.01418.43
8.3.50.0070.00922.80
8.3.40.0090.00918.79
8.3.30.0110.00419.14
8.3.20.0080.00020.15
8.3.10.0000.00821.92
8.3.00.0090.00017.50
8.2.180.0030.01716.50
8.2.170.0090.00622.96
8.2.160.0100.00320.54
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0000.01426.16
8.2.120.0040.00420.94
8.2.110.0030.00721.05
8.2.100.0100.00018.03
8.2.90.0080.00019.40
8.2.80.0030.00617.97
8.2.70.0040.00417.50
8.2.60.0080.00018.04
8.2.50.0030.00618.10
8.2.40.0000.00818.34
8.2.30.0040.00418.21
8.2.20.0000.00717.67
8.2.10.0040.00418.17
8.2.00.0040.00417.71
8.1.280.0090.00625.92
8.1.270.0040.00423.64
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0090.00022.75
8.1.230.0080.00420.30
8.1.220.0040.00417.76
8.1.210.0030.00618.77
8.1.200.0060.00317.35
8.1.190.0000.00817.23
8.1.180.0000.00818.10
8.1.170.0030.00518.49
8.1.160.0000.00721.92
8.1.150.0070.00018.88
8.1.140.0050.00217.37
8.1.130.0070.00017.88
8.1.120.0000.00817.46
8.1.110.0000.00717.40
8.1.100.0000.00717.52
8.1.90.0070.00017.43
8.1.80.0050.00317.44
8.1.70.0030.00617.37
8.1.60.0040.00417.66
8.1.50.0080.00017.59
8.1.40.0000.00917.59
8.1.30.0060.00317.75
8.1.20.0040.00417.64
8.1.10.0030.00517.68
8.1.00.0000.00717.57
8.0.300.0000.00718.77
8.0.290.0030.00616.88
8.0.280.0040.00418.45
8.0.270.0000.00917.34
8.0.260.0060.00317.27
8.0.250.0030.00316.97
8.0.240.0050.00317.10
8.0.230.0030.00316.95
8.0.220.0070.00016.92
8.0.210.0030.00516.93
8.0.200.0030.00316.90
8.0.190.0000.00717.02
8.0.180.0040.00416.88
8.0.170.0040.00416.92
8.0.160.0000.00916.96
8.0.150.0040.00416.89
8.0.140.0050.00216.85
8.0.130.0030.00313.34
8.0.120.0040.00416.91
8.0.110.0000.01016.89
8.0.100.0000.00816.90
8.0.90.0050.00216.82
8.0.80.0100.01016.93
8.0.70.0040.00416.84
8.0.60.0000.00716.84
8.0.50.0000.00916.82
8.0.30.0130.00717.31
8.0.20.0160.00317.40
8.0.10.0000.00717.12
8.0.00.0070.01216.92
7.4.330.0000.00615.01
7.4.320.0040.00416.63
7.4.300.0030.00316.69
7.4.290.0000.00716.66
7.4.280.0080.00016.63
7.4.270.0000.00716.50
7.4.260.0040.00716.58
7.4.250.0040.00416.60
7.4.240.0010.00616.63
7.4.230.0040.00416.53
7.4.220.0160.00916.57
7.4.210.0070.01016.65
7.4.200.0030.00316.65
7.4.160.0100.01316.49
7.4.150.0130.00717.40
7.4.140.0160.00717.86
7.4.130.0110.01316.62
7.4.120.0170.00216.47
7.4.110.0070.01116.53
7.4.100.0090.00916.48
7.4.90.0050.01316.70
7.4.80.0140.00719.39
7.4.70.0130.00716.66
7.4.60.0060.01016.57
7.4.50.0040.00416.58
7.4.40.0110.00716.43
7.4.30.0120.00616.67
7.4.00.0060.01014.73
7.3.330.0030.00313.41
7.3.320.0050.00013.33
7.3.310.0030.00316.30
7.3.300.0040.00416.34
7.3.290.0060.00916.34
7.3.280.0090.00716.43
7.3.270.0080.01017.40
7.3.260.0110.00716.47
7.3.250.0070.01116.50
7.3.240.0090.01316.46
7.3.230.0060.01216.39
7.3.210.0100.00716.41
7.3.200.0080.01119.39
7.3.190.0070.01116.53
7.3.180.0070.01016.28
7.3.170.0110.00616.50
7.3.160.0090.00616.65
7.3.10.0060.00616.60
7.3.00.0000.01016.34
7.2.330.0030.01616.79
7.2.320.0160.00616.54
7.2.310.0090.00916.78
7.2.300.0000.01616.74
7.2.290.0100.00716.74
7.2.130.0070.00716.94
7.2.120.0000.01116.98
7.2.110.0040.01117.04
7.2.100.0000.00916.90
7.2.90.0030.01017.00
7.2.80.0030.01016.59
7.2.70.0000.01416.92
7.2.60.0040.01216.64
7.2.50.0060.00916.88
7.2.40.0000.01116.95
7.2.30.0070.00616.89
7.2.20.0060.01016.68
7.2.10.0000.01316.89
7.2.00.0050.00618.04
7.1.250.0060.00615.95
7.1.200.0000.01415.78
7.1.100.0030.00518.11
7.1.70.0000.00917.22
7.1.60.0100.01419.40
7.1.50.0000.01317.06
7.1.00.0100.07022.57
7.0.200.0000.00716.80
7.0.140.0070.06722.11
7.0.60.0100.06720.05
7.0.50.0100.04717.91
7.0.40.0130.07720.40
7.0.30.0270.04020.25
7.0.20.0330.05720.20
7.0.10.0030.08020.07
7.0.00.0170.07320.09
5.6.280.0000.07321.11
5.6.210.0170.07720.52
5.6.200.0100.06018.19
5.6.190.0100.07020.51
5.6.180.0070.05020.67
5.6.170.0170.04020.57
5.6.160.0130.07320.45
5.6.150.0000.06318.13
5.6.140.0170.07318.20
5.6.130.0130.07018.14
5.6.120.0070.04021.00
5.6.110.0100.04021.15
5.6.100.0070.08720.99
5.6.90.0130.08021.01
5.6.80.0030.07020.45
5.5.350.3230.04020.31
5.5.340.0100.07717.93
5.5.330.0100.08020.38
5.5.320.0430.05320.39
5.5.310.0300.07020.34
5.5.300.0170.07317.96
5.5.290.0030.05018.08
5.5.280.0130.04720.80
5.5.270.0030.06720.98
5.5.260.0070.06720.87
5.5.250.0130.06320.59
5.5.240.0130.04020.23
5.4.450.0630.04319.31
5.4.440.0530.04719.31
5.4.430.0570.03019.46
5.4.420.0370.03019.48
5.4.410.0230.04719.33
5.4.400.0230.04719.32
5.4.390.0470.04718.87
5.4.380.0200.04718.79
5.4.370.0130.05318.84
5.4.360.0130.06318.79
5.4.350.0170.05318.63
5.4.340.0130.05318.48
5.4.320.0040.03912.51
5.4.310.0050.04112.50
5.4.300.0100.04712.51
5.4.290.0080.04012.50
5.4.280.0060.04312.40
5.4.270.0040.05412.40
5.4.260.0070.05212.40
5.4.250.0080.04912.40
5.4.240.0100.05512.41
5.4.230.0060.04512.39
5.4.220.0060.04512.39
5.4.210.0070.04012.40
5.4.200.0060.04012.39
5.4.190.0080.03512.39
5.4.180.0050.04312.39
5.4.170.0070.04612.40
5.4.160.0070.04112.39
5.4.150.0080.03512.39
5.4.140.0050.03812.07
5.4.130.0040.03712.06
5.4.120.0060.03812.02
5.4.110.0090.03212.02
5.4.100.0070.03412.02
5.4.90.0060.03812.02
5.4.80.0050.03912.02
5.4.70.0050.04012.02
5.4.60.0080.05112.02
5.4.50.0080.03712.02
5.4.40.0080.03412.00
5.4.30.0070.04312.00
5.4.20.0040.04712.00
5.4.10.0070.04212.00
5.4.00.0090.03711.48
5.3.290.0060.04412.80
5.3.280.0060.03912.71
5.3.270.0060.05012.72
5.3.260.0060.05212.72
5.3.250.0060.04012.72
5.3.240.0050.04012.72
5.3.230.0090.03612.70
5.3.220.0060.03912.68
5.3.210.0070.04012.68
5.3.200.0070.03712.68
5.3.190.0110.03712.68
5.3.180.0040.04112.67
5.3.170.0060.03812.67
5.3.160.0050.04412.68
5.3.150.0070.03912.68
5.3.140.0060.05412.66
5.3.130.0090.03812.66
5.3.120.0090.04812.66
5.3.110.0040.04312.66
5.3.100.0070.05212.13
5.3.90.0030.04612.11
5.3.80.0080.03512.10
5.3.70.0020.04112.09
5.3.60.0050.03712.08
5.3.50.0050.03812.03
5.3.40.0070.03512.03
5.3.30.0050.03611.99
5.3.20.0050.03711.77
5.3.10.0100.05111.73
5.3.00.0100.05511.72
5.2.170.0030.0519.22
5.2.160.0100.0309.22
5.2.150.0060.0339.22
5.2.140.0030.0349.21
5.2.130.0080.0369.18
5.2.120.0050.0319.18
5.2.110.0040.0329.19
5.2.100.0060.0319.18
5.2.90.0050.0349.18
5.2.80.0040.0319.18
5.2.70.0060.0309.18
5.2.60.0040.0329.13
5.2.50.0090.0279.10
5.2.40.0040.0329.08
5.2.30.0070.0319.06
5.2.20.0040.0319.04
5.2.10.0070.0268.96
5.2.00.0040.0318.82
5.1.60.0070.0228.10
5.1.50.0050.0258.09
5.1.40.0040.0258.08
5.1.30.0060.0318.43
5.1.20.0050.0308.45
5.1.10.0030.0298.17
5.1.00.0030.0278.17
5.0.50.0040.0216.66
5.0.40.0050.0186.52
5.0.30.0050.0306.33
5.0.20.0040.0286.29
5.0.10.0060.0276.28
5.0.00.0040.0346.27
4.4.90.0040.0164.78
4.4.80.0020.0174.76
4.4.70.0030.0164.76
4.4.60.0020.0184.75
4.4.50.0040.0154.77
4.4.40.0040.0284.71
4.4.30.0060.0194.76
4.4.20.0050.0154.84
4.4.10.0020.0184.85
4.4.00.0010.0284.76
4.3.110.0040.0154.67
4.3.100.0020.0164.66
4.3.90.0010.0184.64
4.3.80.0040.0244.58
4.3.70.0020.0174.63
4.3.60.0040.0144.63
4.3.50.0000.0254.63
4.3.40.0050.0274.54
4.3.30.0030.0173.32
4.3.20.0030.0163.30
4.3.10.0020.0163.26
4.3.00.0030.01315.90

preferences:
44.73 ms | 401 KiB | 5 Q