3v4l.org

run code in 300+ PHP versions simultaneously
<?php /** * @param array $items * @param array $weights * * @return mixed */ function random_weighted(array $items, array $weights) { $weight = 0; $return = current($items); for ($i = 0, $n = count($items); $i < $n; $i++) { $random = mt_rand(0, $weights[$i] + $weight); if ($random >= $weight) { $return = $items[$i]; } $weight += $weights[$i]; } return $return; } $items = ['a', 'b', 'c', 'd']; $weights = [0, 10, 10, 10]; $i = 100; $results = ['a' => 0, 'b' => 0, 'c' => 0, 'd' => 0]; do { $x = random_weighted($items, $weights); $results[$x]++; } while (--$i); var_dump($results);

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)
7.4.00.0080.00914.92
7.3.120.0120.00315.10
7.3.110.0110.00614.91
7.3.100.0110.00514.96
7.3.90.0040.00814.99
7.3.80.0050.00814.77
7.3.70.0040.00914.76
7.3.60.0050.01114.79
7.3.50.0040.00814.97
7.3.40.0090.00514.86
7.3.30.0030.01014.70
7.3.20.0090.00416.66
7.3.10.0080.00516.75
7.3.00.0050.00816.56
7.2.250.0100.00815.22
7.2.240.0070.01215.02
7.2.230.0080.00815.13
7.2.220.0060.00815.22
7.2.210.0050.00814.94
7.2.200.0030.01115.06
7.2.190.0100.00514.98
7.2.180.0080.01015.05
7.2.170.0050.00815.04
7.2.130.0040.00717.07
7.2.120.0070.00716.43
7.2.110.0030.00816.71
7.2.100.0030.01017.05
7.2.90.0120.00016.99
7.2.80.0000.01517.03
7.2.70.0040.01116.91
7.2.60.0000.01116.98
7.2.50.0100.00616.85
7.2.40.0030.00617.02
7.2.30.0070.01017.06
7.2.20.0070.00717.17
7.2.10.0090.00616.95
7.2.00.0060.00818.17
7.1.330.0090.00515.91
7.1.320.0090.00515.69
7.1.310.0080.00515.89
7.1.300.0060.00615.81
7.1.290.0110.00315.71
7.1.280.0070.00615.70
7.1.270.0060.00615.68
7.1.260.0060.00815.89
7.1.250.0030.00615.71
7.1.240.0100.00315.86
7.1.230.0080.00415.96
7.1.220.0070.00415.84
7.1.210.0120.00015.61
7.1.200.0040.00715.91
7.1.190.0090.00315.80
7.1.180.0090.00315.89
7.1.170.0040.00915.75
7.1.160.0060.00615.55
7.1.150.0030.01115.52
7.1.140.0040.01115.66
7.1.130.0070.00315.93
7.1.120.0030.01315.68
7.1.110.0040.00715.75
7.1.100.0000.01315.68
7.1.90.0000.00815.58
7.1.80.0000.01115.86
7.1.70.0020.00816.46
7.1.60.0090.00917.58
7.1.50.0110.00716.24
7.1.40.0050.00315.48
7.1.30.0070.00715.47
7.1.20.0120.00015.72
7.1.10.0060.00615.73
7.1.00.0100.03719.16
7.0.330.0090.00615.10
7.0.320.0030.00715.50
7.0.310.0070.00715.25
7.0.300.0090.00615.05
7.0.290.0060.00915.37
7.0.280.0000.01414.93
7.0.270.0060.00615.12
7.0.260.0040.00715.07
7.0.250.0030.01215.33
7.0.240.0060.00615.10
7.0.230.0030.00815.30
7.0.220.0060.00915.13
7.0.210.0030.00915.36
7.0.200.0130.01015.11
7.0.190.0110.00415.30
7.0.180.0090.00615.34
7.0.170.0100.00315.34
7.0.160.0030.00915.01
7.0.150.0070.00715.28
7.0.140.0000.00915.30
7.0.130.0000.01615.39
7.0.120.0100.00315.39
7.0.110.0080.00015.41
7.0.100.0030.01015.37
7.0.90.0060.00315.27
7.0.80.0000.01215.39
7.0.70.0060.00815.39
7.0.60.0030.04518.55
7.0.50.0090.03816.71
7.0.40.0030.03016.88
7.0.30.0230.02516.77
7.0.20.0100.03316.87
7.0.10.0050.04716.86
7.0.00.0080.02316.85
5.6.380.0040.01114.35
5.6.370.0040.01714.50
5.6.360.0060.00914.53
5.6.350.0060.00914.22
5.6.340.0100.00714.48
5.6.330.0040.00814.24
5.6.320.0090.00914.51
5.6.310.0050.00513.97
5.6.300.0080.00414.52
5.6.290.0060.00614.53
5.6.280.0060.00914.00
5.6.270.0070.01014.30
5.6.260.0060.00614.44
5.6.250.0100.00314.40
5.6.240.0030.01014.11
5.6.230.0090.00614.01
5.6.220.0000.01114.44
5.6.210.0030.04017.43
5.6.200.0070.04416.36
5.6.190.0030.05417.50
5.6.180.0100.04517.52
5.6.170.0170.02317.38
5.6.160.0040.04617.29
5.6.150.0030.04716.27
5.6.140.0050.03716.31
5.6.130.0050.02516.32
5.6.120.0060.03317.74
5.6.110.0140.03917.40
5.6.100.0090.04317.68
5.6.90.0100.02017.49
5.6.80.0050.02717.32
5.6.70.0060.01214.41
5.6.60.0070.00714.07
5.6.50.0030.01314.03
5.6.40.0130.00714.32
5.6.30.0070.00714.13
5.6.20.0000.01314.52
5.6.10.0130.00314.37
5.6.00.0110.00414.16
5.5.380.0000.01511.18
5.5.370.0030.00711.32
5.5.360.0030.01011.18
5.5.350.0230.03215.76
5.5.340.0070.03814.58
5.5.330.0050.04615.72
5.5.320.0340.03715.82
5.5.310.0200.02015.68
5.5.300.0070.04214.61
5.5.290.0020.03614.63
5.5.280.0090.03916.04
5.5.270.0000.02916.06
5.5.260.0100.04315.99
5.5.250.0130.03515.90
5.5.240.0110.03915.71
5.5.230.0070.01011.18
5.5.220.0090.00611.32
5.5.210.0090.00911.29
5.5.200.0070.00411.36
5.5.190.0070.01111.18
5.5.180.0030.01111.18
5.5.170.0090.00411.18
5.5.160.0000.01311.18
5.5.150.0030.00911.18
5.5.140.0000.01311.18
5.5.130.0110.00411.24
5.5.120.0000.01311.18
5.5.110.0100.00611.18
5.5.100.0100.00611.18
5.5.90.0100.00611.31
5.5.80.0090.00811.18
5.5.70.0110.00411.38
5.5.60.0100.01011.18
5.5.50.0080.00411.27
5.5.40.0070.00311.36
5.5.30.0000.01111.30
5.5.20.0090.00011.18
5.5.10.0110.00011.28
5.5.00.0040.00711.29

preferences:
30.59 ms | 401 KiB | 5 Q