3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Leak { static protected function &leaked(array &$array = null) { $array = array('one'); return $array; } public function toLeaked($array = null) { $array = static::leaked($array); return $array; } public function testLeak() { echo "memory before loop: " . memory_get_usage() . PHP_EOL; for ($i = 0; $i < 20000; $i++) { $leak = $this->toLeaked(); } gc_collect_cycles(); echo "memory after loop: " . memory_get_usage() . PHP_EOL; } } $leak = new Leak(); $leak->testLeak();

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)
7.4.00.0040.01114.88
7.3.120.0110.01114.99
7.3.110.0070.01414.69
7.3.100.0060.01814.53
7.3.90.0070.01315.09
7.3.80.0000.01715.05
7.3.70.0070.01014.69
7.3.60.0060.01014.89
7.3.50.0120.00614.70
7.3.40.0030.01614.78
7.3.30.0070.00714.89
7.3.20.0100.01016.57
7.3.10.0130.00316.57
7.3.00.0100.01016.62
7.2.250.0100.01315.26
7.2.240.0100.01215.09
7.2.230.0030.01315.25
7.2.220.0000.01615.18
7.2.210.0030.01415.13
7.2.200.0030.01414.91
7.2.190.0100.00715.21
7.2.180.0030.01715.05
7.2.170.0000.01715.14
7.2.160.0030.01614.80
7.2.150.0060.00917.08
7.2.140.0030.01316.78
7.2.130.0030.01016.81
7.2.120.0030.01617.08
7.2.110.0030.01017.00
7.2.100.0000.01716.90
7.2.90.0030.01016.74
7.2.80.0070.00717.10
7.2.70.0000.01516.67
7.2.60.0040.01416.91
7.2.50.0080.00816.98
7.2.40.0030.01316.93
7.2.30.0040.01516.99
7.2.20.0060.00616.96
7.2.10.0060.01316.99
7.2.00.0130.00316.92
7.1.330.0070.01415.77
7.1.320.0000.01915.95
7.1.310.0130.01015.82
7.1.300.0060.01515.52
7.1.290.0030.02115.86
7.1.280.0070.01715.77
7.1.270.0070.01415.63
7.1.260.0040.01415.80
7.1.250.0040.01115.81
7.1.240.0070.01516.04
7.1.230.0060.01215.82
7.1.220.0030.01115.85
7.1.210.0030.01715.99
7.1.200.0000.01415.76
7.1.190.0030.01415.82
7.1.180.0070.01015.78
7.1.170.0070.01115.59
7.1.160.0070.01115.69
7.1.150.0030.01516.00
7.1.140.0030.01715.93
7.1.130.0100.01015.79
7.1.120.0100.00715.73
7.1.110.0030.01415.71
7.1.100.0030.01615.91
7.1.90.0000.01515.80
7.1.80.0100.00715.68
7.1.70.0080.00916.50
7.1.60.0020.01616.45
7.1.50.0050.01116.49
7.1.40.0040.01415.88
7.1.30.0030.01715.74
7.1.20.0110.00315.84
7.1.10.0090.03818.94
7.1.00.0060.03719.20
7.0.330.0070.01315.14
7.0.320.0060.00915.35
7.0.310.0000.02215.56
7.0.300.0030.01315.52
7.0.290.0070.01315.40
7.0.280.0070.01715.09
7.0.270.0100.01315.23
7.0.260.0110.01115.42
7.0.250.0070.01415.19
7.0.240.0030.02015.25
7.0.230.0110.01115.44
7.0.220.0060.01015.36
7.0.210.0110.00815.53
7.0.200.0040.01016.20
7.0.190.0030.01615.50
7.0.180.0000.02415.43
7.0.170.0030.01923.73
7.0.160.0000.02223.70
7.0.150.0520.03925.96
7.0.140.0320.04326.01
7.0.130.0350.04125.91
7.0.120.0300.04226.00
7.0.110.0350.03625.96
7.0.100.0450.05325.86
7.0.90.0330.04326.05
7.0.80.0330.03626.01
7.0.70.0280.04125.96
7.0.60.0980.04426.03
7.0.50.0360.03625.97
7.0.40.0320.04021.10
7.0.30.0310.04521.07
7.0.20.0370.04021.08
7.0.10.0400.03621.11
7.0.00.0630.03122.08
5.6.400.0070.01814.27
5.6.390.0030.02314.56
5.6.380.0000.02114.62
5.6.370.0070.01714.52
5.6.360.0090.01914.57
5.6.350.0000.02514.48
5.6.340.0030.02214.70
5.6.330.0130.01613.99
5.6.320.0000.02314.60
5.6.310.0070.02014.32
5.6.300.0000.02614.12
5.6.290.0040.02514.21
5.6.280.0030.02314.39
5.6.270.0000.02814.32
5.6.260.0090.01514.42
5.6.250.0070.02014.57
5.6.240.0030.02214.19
5.6.230.0110.01514.37
5.6.220.0000.02514.23
5.6.210.0130.01914.36
5.6.200.0030.02114.21
5.6.190.0040.03014.38
5.6.180.0040.01814.38
5.6.170.0070.01714.37
5.6.160.0120.01214.45
5.6.150.0040.02114.40
5.6.140.0100.01914.13
5.6.130.0030.01814.18
5.6.120.0070.01714.36
5.6.110.0070.01714.25
5.6.100.0030.02514.42
5.6.90.0030.01714.35
5.6.80.0030.01914.32
5.6.70.0030.01814.20
5.6.60.0070.01614.19
5.6.50.0030.02614.36
5.6.40.0060.02214.14
5.6.30.0090.01514.21
5.6.20.0070.02014.37
5.6.10.0030.02514.43
5.6.00.0120.01214.32

preferences:
41.32 ms | 401 KiB | 5 Q