3v4l.org

run code in 300+ PHP versions simultaneously
<?php function &get_instance_ref() { static $obj; echo 'Static object: '; var_dump($obj); if (!isset($obj)) { // Assign a reference to the static variable $obj = &new stdclass; } $obj->property++; return $obj; } function &get_instance_noref() { static $obj; global $property; $property=3; $obj->property=2; echo "aa".$property; echo 'Static object: '; var_dump($obj); $obj = new stdclass; $obj->property++; return $obj; } $obj1 = get_instance_ref(); $still_obj1 = get_instance_ref(); echo "\n"; $obj2 = get_instance_noref(); $still_obj2 = get_instance_noref(); $still_obj3 = get_instance_noref(); ?>

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)
5.6.280.0100.06321.00
5.6.210.0030.04720.55
5.6.200.0070.08018.29
5.6.190.0200.07020.33
5.6.180.0470.05720.56
5.6.170.0230.08720.77
5.6.160.0030.09020.55
5.6.150.0130.08018.18
5.6.140.0100.07718.11
5.6.130.0130.07718.29
5.6.120.0100.08720.90
5.6.110.0030.08021.02
5.6.100.0000.05021.04
5.6.90.0000.07321.14
5.6.80.0100.08020.39
5.5.350.0230.05720.42
5.5.340.0100.05717.99
5.5.330.0070.07320.43
5.5.320.0200.03720.34
5.5.310.0170.04020.28
5.5.300.0030.08317.99
5.5.290.0070.08717.98
5.5.280.0070.05020.78
5.5.270.0030.04320.95
5.5.260.0100.07720.65
5.5.250.0170.06320.72
5.5.240.0030.07020.16
5.4.450.0100.05319.49
5.4.440.0100.07319.41
5.4.430.0070.06719.44
5.4.420.0070.05019.24
5.4.410.0070.04719.34
5.4.400.0000.04319.25
5.4.390.0100.06718.84
5.4.380.0070.08318.87
5.4.370.0100.04019.08
5.4.360.0030.05019.21
5.4.350.0030.05319.16
5.4.340.0130.06719.24
5.4.320.0070.04019.24
5.4.310.0130.04318.97
5.4.300.0100.07019.24
5.4.290.0000.07319.24
5.4.280.0100.07719.00
5.4.270.0130.07019.14
5.4.260.0070.08018.97
5.4.250.0130.05319.23
5.4.240.0100.06319.14
5.4.230.0100.05719.11
5.4.220.0000.07718.92
5.4.210.0030.06019.14
5.4.200.0170.06318.97
5.4.190.0130.03018.86
5.4.180.0100.06019.11
5.4.170.0070.05718.83
5.4.160.0100.06018.98
5.4.150.0130.07018.85
5.4.140.0100.07316.51
5.4.130.0000.07016.31
5.4.120.0070.06016.43
5.4.110.0030.07316.43
5.4.100.0030.06016.48
5.4.90.0170.06016.39
5.4.80.0100.06716.31
5.4.70.0130.06316.68
5.4.60.0030.07016.65
5.4.50.0070.04016.36
5.4.40.0100.05716.40
5.4.30.0030.03716.38
5.4.20.0130.04016.44
5.4.10.0070.06716.27
5.4.00.0030.07315.79
5.3.290.0070.08014.73
5.3.280.0070.04314.66
5.3.270.0100.06014.61
5.3.260.0070.07714.77
5.3.250.0070.07714.63
5.3.240.0130.04014.64
5.3.230.0100.04014.59
5.3.220.0000.09014.72
5.3.210.0100.04314.61
5.3.200.0100.07714.61
5.3.190.0070.07314.58
5.3.180.0030.03714.60
5.3.170.0070.04714.64
5.3.160.0030.05314.56
5.3.150.0070.05714.62
5.3.140.0030.05314.73
5.3.130.0070.07714.57
5.3.120.0030.04314.55
5.3.110.0100.05014.47
5.3.100.0100.07013.96
5.3.90.0030.04314.08
5.3.80.0030.07314.18
5.3.70.0070.04313.91
5.3.60.0070.04014.04
5.3.50.0030.08014.11
5.3.40.0030.05313.88
5.3.30.0000.04013.84
5.3.20.0030.05013.73
5.3.10.0030.05313.67
5.3.00.0070.07313.80
5.2.170.0070.06011.15
5.2.160.0030.06011.17
5.2.150.0030.03711.21
5.2.140.0000.03311.30
5.2.130.0030.06011.18
5.2.120.0030.06311.17
5.2.110.0100.06011.00
5.2.100.0030.06011.10
5.2.90.0100.04011.10
5.2.80.0070.05010.98
5.2.70.0030.03711.10
5.2.60.0000.03010.94
5.2.50.0070.05010.91
5.2.40.0030.05311.06
5.2.30.0070.06311.04
5.2.20.0030.03710.96
5.2.10.0070.03710.87
5.2.00.0070.06010.73
5.1.60.0000.05310.02
5.1.50.0100.02710.05
5.1.40.0000.0479.96
5.1.30.0030.03310.38
5.1.20.0070.05310.36
5.1.10.0130.01710.14
5.1.00.0030.03010.14
5.0.50.0030.0308.60
5.0.40.0000.0208.44
5.0.30.0000.0678.38
5.0.20.0000.0278.38
5.0.10.0000.0308.38
5.0.00.0030.0608.38
4.4.90.0030.0338.38
4.4.80.0000.0308.38
4.4.70.0000.0238.38
4.4.60.0070.0308.38
4.4.50.0070.0278.38
4.4.40.0000.0478.38
4.4.30.0000.0408.38
4.4.20.0000.0278.38
4.4.10.0000.0178.38
4.4.00.0000.0278.38
4.3.110.0030.0378.38
4.3.100.0000.0238.38
4.3.90.0070.0208.38
4.3.80.0000.0278.38
4.3.70.0000.0208.38
4.3.60.0030.0208.38
4.3.50.0030.0308.38
4.3.40.0030.0478.38
4.3.30.0000.0278.38
4.3.20.0000.0308.38
4.3.10.0030.0178.38
4.3.00.0000.0178.38

preferences:
142.39 ms | 1394 KiB | 7 Q