3v4l.org

run code in 300+ PHP versions simultaneously
<?php class AliasPool { protected static $i = 0; public static function get () { $alias = 'tag_'; $j = self::$i; while ($j > 26) { $alias .= chr(($j % 26) + oct('a')); $j = floor($j / 26); } self::$i++; return $alias; } } for ($i = 0; $i < 60; ++$i) { var_dump(AliasPool::get()); print "\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)
8.3.60.0160.00618.55
8.3.50.0090.00618.09
8.3.40.0120.00918.61
8.3.30.0090.00619.04
8.3.20.0040.00420.21
8.3.10.0060.00323.66
8.3.00.0080.00020.81
8.2.180.0040.01117.00
8.2.170.0100.00622.96
8.2.160.0100.00620.53
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0110.00726.16
8.2.120.0050.00320.75
8.2.110.0030.00620.94
8.2.100.0070.00417.91
8.2.90.0040.00417.97
8.2.80.0100.00017.97
8.2.70.0100.00017.75
8.2.60.0030.00617.80
8.2.50.0040.00418.07
8.2.40.0040.00418.33
8.2.30.0100.00018.29
8.2.20.0040.00417.80
8.2.10.0040.00418.12
8.2.00.0040.00417.85
8.1.280.0070.00725.92
8.1.270.0080.00023.88
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0070.00322.66
8.1.230.0030.00921.03
8.1.220.0000.00817.79
8.1.210.0000.00818.97
8.1.200.0060.00617.35
8.1.190.0060.00317.23
8.1.180.0090.00018.10
8.1.170.0000.00818.53
8.1.160.0040.00421.96
8.1.150.0000.00718.58
8.1.140.0040.00717.39
8.1.130.0000.00717.87
8.1.120.0040.00417.40
8.1.110.0000.00817.43
8.1.100.0000.00717.43
8.1.90.0070.00017.29
8.1.80.0040.00417.37
8.1.70.0070.00017.22
8.1.60.0090.00017.48
8.1.50.0040.00417.49
8.1.40.0000.00717.52
8.1.30.0060.00317.66
8.1.20.0040.00417.57
8.1.10.0040.00417.44
8.1.00.0000.00817.45
8.0.300.0070.00020.08
8.0.290.0040.00416.75
8.0.280.0030.00318.51
8.0.270.0070.00017.28
8.0.260.0040.00417.22
8.0.250.0030.00317.00
8.0.240.0000.00817.01
8.0.230.0070.00017.04
8.0.220.0000.00816.85
8.0.210.0080.00017.00
8.0.200.0000.00716.89
8.0.190.0060.00316.99
8.0.180.0050.00216.95
8.0.170.0000.00816.97
8.0.160.0070.00016.98
8.0.150.0000.00716.99
8.0.140.0050.00316.86
8.0.130.0050.00013.43
8.0.120.0000.00716.82
8.0.110.0000.00716.97
8.0.100.0040.00417.07
8.0.90.0030.00516.93
8.0.80.0060.00917.00
8.0.70.0040.00416.90
8.0.60.0000.00716.86
8.0.50.0000.00716.83
8.0.30.0100.01017.17
8.0.20.0100.01017.40
8.0.10.0030.00516.86
8.0.00.0100.01016.78
7.4.330.0020.00315.03
7.4.320.0040.00416.49
7.4.300.0070.00016.52
7.4.290.0030.00616.41
7.4.280.0070.00416.61
7.4.270.0000.00716.61
7.4.260.0100.00016.54
7.4.250.0050.00216.59
7.4.240.0020.00516.55
7.4.230.0050.00216.68
7.4.220.0040.01416.54
7.4.210.0090.00616.62
7.4.200.0070.00016.44
7.4.160.0090.00616.61
7.4.150.0120.00617.40
7.4.140.0130.00517.86
7.4.130.0090.01016.59
7.4.120.0160.00316.55
7.4.110.0160.00616.72
7.4.100.0190.00616.61
7.4.90.0100.01016.63
7.4.80.0170.00319.39
7.4.70.0120.00816.59
7.4.60.0120.00616.58
7.4.50.0030.00616.64
7.4.40.0070.01016.41
7.4.30.0060.01216.58
7.4.00.0020.01614.83
7.3.330.0030.00313.29
7.3.320.0040.00313.18
7.3.310.0030.00516.20
7.3.300.0000.00716.38
7.3.290.0090.00616.26
7.3.280.0070.00916.34
7.3.270.0080.00817.40
7.3.260.0190.00016.63
7.3.250.0100.00816.45
7.3.240.0120.00616.42
7.3.230.0050.01216.46
7.3.210.0110.00716.38
7.3.200.0070.01019.39
7.3.190.0150.00616.71
7.3.180.0070.01016.54
7.3.170.0070.01016.36
7.3.160.0040.01316.36
7.3.120.0090.00914.93
7.3.110.0110.00714.93
7.3.100.0090.00914.81
7.3.90.0060.01214.80
7.3.80.0090.00614.80
7.3.70.0060.00314.76
7.3.60.0060.00614.71
7.3.50.0000.01414.82
7.3.40.0000.01214.90
7.3.30.0060.00614.96
7.3.20.0060.00616.57
7.3.10.0030.01016.71
7.3.00.0070.00716.62
7.2.330.0030.01716.63
7.2.320.0080.01016.63
7.2.310.0120.00616.77
7.2.300.0120.00616.75
7.2.290.0090.00916.73
7.2.250.0060.01315.30
7.2.240.0030.01615.09
7.2.230.0070.01415.23
7.2.220.0150.00415.22
7.2.210.0120.00315.01
7.2.200.0000.00914.83
7.2.190.0070.00714.81
7.2.180.0070.00715.06
7.2.170.0000.01015.14
7.2.60.0060.00616.96
7.2.00.0030.00919.25
7.1.330.0130.00015.71
7.1.320.0060.00915.47
7.1.310.0070.01015.82
7.1.300.0080.00415.93
7.1.290.0030.00615.64
7.1.280.0090.00015.81
7.1.270.0030.01015.71
7.1.260.0040.00415.73
7.1.200.0000.01215.74
7.1.100.0030.01417.99
7.1.70.0040.00416.98
7.1.60.0090.01519.70
7.1.50.0190.01634.77
7.1.00.0030.07322.46
7.0.200.0040.00416.54
7.0.140.0030.07321.95
7.0.60.0130.07019.82
7.0.50.0100.07717.88
7.0.40.0130.08320.04
7.0.30.0200.04020.13
7.0.20.0330.05720.06
7.0.10.0000.06320.30
7.0.00.0000.04720.33
5.6.280.0030.07321.10
5.6.210.0100.07720.48
5.6.200.0100.07018.28
5.6.190.0030.04320.52
5.6.180.3230.04020.64
5.6.170.0230.04720.58
5.6.160.0030.05320.54
5.6.150.0130.07318.23
5.6.140.0000.05718.18
5.6.130.0100.06318.23
5.6.120.0070.08021.15
5.6.110.0130.07721.05
5.6.100.0170.07721.00
5.6.90.0030.04320.98
5.6.80.0230.06720.48
5.6.70.3170.04020.37
5.5.350.0270.07720.41
5.5.340.0170.07317.94
5.5.330.0030.04320.19
5.5.320.0300.05320.43
5.5.310.0130.04320.26
5.5.300.0070.04317.95
5.5.290.0100.08017.97
5.5.280.0030.09320.88
5.5.270.0000.08320.76
5.5.260.0130.08320.84
5.5.250.0230.06720.49
5.5.240.0070.04020.04
5.4.450.0130.03729.93
5.4.440.0500.03329.68
5.4.430.0370.04728.29
5.4.420.0300.03728.29
5.4.410.0200.04028.29
5.4.400.0400.04028.29
5.4.390.0500.03728.29
5.4.380.0200.05018.74
5.4.370.0270.03718.62
5.4.360.0170.05718.57
5.4.350.0200.04718.63
5.4.340.0170.05018.45
5.4.320.0040.03912.50
5.4.310.0100.03812.49
5.4.300.0060.04312.50
5.4.290.0070.04412.49
5.4.280.0040.04612.39
5.4.270.0080.04712.40
5.4.260.0100.04512.39
5.4.250.0080.05112.39
5.4.240.0050.04412.39
5.4.230.0050.04312.39
5.4.220.0080.04512.39
5.4.210.0120.04012.38
5.4.200.0070.05612.39
5.4.190.0120.04912.38
5.4.180.0100.05012.38
5.4.170.0100.05212.39
5.4.160.0100.05012.39
5.4.150.0060.05312.39
5.4.140.0090.05312.07
5.4.130.0090.04912.05
5.4.120.0090.05112.02
5.4.110.0130.04812.02
5.4.100.0080.04912.01
5.4.90.0150.04412.01
5.4.80.0110.04812.01
5.4.70.0110.03712.01
5.4.60.0140.04112.01
5.4.50.0080.04412.01
5.4.40.0060.04212.00
5.4.30.0090.03712.00
5.4.20.0100.03811.99
5.4.10.0120.04311.99
5.4.00.0070.05411.48
5.3.290.0090.04212.80
5.3.280.0080.05612.71
5.3.270.0100.05512.73
5.3.260.0100.06212.72
5.3.250.0140.05512.72
5.3.240.0070.06112.71
5.3.230.0080.05612.71
5.3.220.0100.06212.68
5.3.210.0140.05812.68
5.3.200.0140.05612.68
5.3.190.0100.06012.67
5.3.180.0100.06112.68
5.3.170.0130.05512.67
5.3.160.0100.05612.67
5.3.150.0250.09012.67
5.3.140.0230.04512.66
5.3.130.0190.05212.66
5.3.120.0130.06312.66
5.3.110.0160.05512.66
5.3.100.0080.04912.13
5.3.90.0070.05112.11
5.3.80.0130.04312.10
5.3.70.0150.08612.10
5.3.60.0130.06012.08
5.3.50.0070.03912.03
5.3.40.0050.04212.03
5.3.30.0060.04111.98
5.3.20.0090.03911.77
5.3.10.0090.04511.73
5.3.00.0170.05111.72
5.2.170.0160.0609.22
5.2.160.0090.0419.23
5.2.150.0100.0709.22
5.2.140.0250.0599.22
5.2.130.0100.0319.18
5.2.120.0060.0409.18
5.2.110.0090.0459.19
5.2.100.0070.0529.18
5.2.90.0190.0879.18
5.2.80.0140.0899.17
5.2.70.0170.0769.18
5.2.60.0030.0449.13
5.2.50.0090.0409.10
5.2.40.0070.0399.08
5.2.30.0060.0439.05
5.2.20.0120.0379.04
5.2.10.0140.0458.95
5.2.00.0130.0548.81
5.1.60.0130.0608.09
5.1.50.0120.0818.09
5.1.40.0160.0398.07
5.1.30.0100.0338.42
5.1.20.0030.0378.45
5.1.10.0120.0428.16
5.1.00.0110.0648.17
5.0.50.0040.0226.64
5.0.40.0100.0326.50
5.0.30.0040.0396.32
5.0.20.0050.0226.28
5.0.10.0100.0586.26
5.0.00.0070.0296.25
4.4.90.0020.0174.78
4.4.80.0040.0204.76
4.4.70.0050.0194.75
4.4.60.0040.0204.76
4.4.50.0030.0184.77
4.4.40.0030.0344.71
4.4.30.0040.0204.76
4.4.20.0040.0214.84
4.4.10.0070.0184.85
4.4.00.0010.0354.76
4.3.110.0040.0214.67
4.3.100.0040.0424.66
4.3.90.0030.0214.64
4.3.80.0030.0424.58
4.3.70.0060.0194.63
4.3.60.0040.0144.63
4.3.50.0030.0164.63
4.3.40.0010.0274.54
4.3.30.0030.0163.30
4.3.20.0020.0173.28
4.3.10.0000.0193.23
4.3.00.0130.01728.29

preferences:
48.27 ms | 400 KiB | 5 Q