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']; $weights = [0, 3, 3]; $i = 100; $results = ['a' => 0, 'b' => 0, 'c' => 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)
7.4.00.0030.01014.91
7.3.120.0080.00614.80
7.3.110.0090.00614.95
7.3.100.0100.01014.59
7.3.90.0090.00614.98
7.3.80.0030.01214.82
7.3.70.0000.01014.79
7.3.60.0000.01514.93
7.3.50.0070.00414.51
7.3.40.0070.01014.88
7.3.30.0030.01014.87
7.3.20.0030.00816.71
7.3.10.0050.01116.32
7.3.00.0110.00716.48
7.2.250.0100.00815.05
7.2.240.0030.01314.99
7.2.230.0060.01515.10
7.2.220.0060.00615.05
7.2.210.0000.01215.06
7.2.200.0090.00614.82
7.2.190.0110.00315.14
7.2.180.0030.01015.13
7.2.170.0100.00614.81
7.2.130.0070.01016.55
7.2.120.0070.01016.22
7.2.110.0080.00716.62
7.2.100.0110.00716.57
7.2.90.0070.00716.65
7.2.80.0170.00616.79
7.2.70.0160.00316.51
7.2.60.0150.01216.91
7.2.50.0130.01016.54
7.2.40.0080.01916.74
7.2.30.0230.00316.48
7.2.20.0160.00916.68
7.2.10.0070.01316.52
7.2.00.0150.00318.10
7.1.330.0090.00615.84
7.1.320.0080.00015.68
7.1.310.0030.01015.64
7.1.300.0030.01015.82
7.1.290.0070.00715.86
7.1.280.0040.01115.89
7.1.270.0100.00715.66
7.1.260.0120.00315.80
7.1.250.0160.00015.32
7.1.70.0000.00817.25
7.1.60.0130.01019.27
7.1.50.0140.00716.98
7.1.00.0030.07722.48
7.0.200.0790.00714.34
7.0.60.0000.04321.81
7.0.50.0070.03717.72
7.0.40.0030.04719.96
7.0.30.0370.05020.30
7.0.20.0100.07320.16
7.0.10.0030.07320.23
7.0.00.0070.05020.20
5.6.280.0170.05720.86
5.6.210.0030.04020.74
5.6.200.0070.03718.19
5.6.190.0130.08020.40
5.6.180.0370.05720.50
5.6.170.0200.04320.56
5.6.160.0130.04320.43
5.6.150.0030.04318.23
5.6.140.0100.05318.26
5.6.130.0070.04318.28
5.6.120.0100.08020.99
5.6.110.0070.08320.99
5.6.100.0130.03721.07
5.6.90.0100.04320.98
5.6.80.0030.05020.54
5.5.350.0400.06720.52
5.5.340.0130.07718.05
5.5.330.0100.08020.21
5.5.320.0270.04720.35
5.5.310.0230.04720.34
5.5.300.0100.07718.04
5.5.290.0100.04717.91
5.5.280.0100.06020.88
5.5.270.0100.08720.64
5.5.260.0030.06320.84
5.5.250.0100.07020.46
5.5.240.0030.07720.16

preferences:
30.51 ms | 401 KiB | 5 Q