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 $property; echo 'Static object: '; var_dump($obj); if (!isset($obj)) { // Assign the object to the static variable $obj = new stdclass; echo $property; } $obj->property++; return $obj; } $obj1 = get_instance_ref(); $still_obj1 = get_instance_ref(); echo "\n"; $property=2; $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)
5.6.280.0000.07721.12
5.6.250.0100.06720.76
5.6.240.0130.05720.61
5.6.230.0100.05720.50
5.6.220.0070.05720.67
5.6.210.0100.06020.59
5.6.200.0030.08321.18
5.6.190.0030.06021.04
5.6.180.0070.05020.96
5.6.170.0100.05321.04
5.6.160.0000.07320.97
5.6.150.0070.07720.94
5.6.140.0130.06720.96
5.6.130.0170.07020.96
5.6.120.0070.08021.00
5.6.110.0070.06021.09
5.6.100.0030.04321.01
5.6.90.0030.06320.93
5.6.80.0070.04720.44
5.6.70.0130.06320.40
5.6.60.0000.06020.36
5.6.50.0000.06720.41
5.6.40.0130.05320.35
5.6.30.0030.04020.42
5.6.20.0070.08020.43
5.6.10.0070.06020.37
5.6.00.0070.05320.29
5.5.380.0070.04720.43
5.5.370.0000.05020.41
5.5.360.0100.03720.45
5.5.350.0030.04720.43
5.5.340.0070.06320.90
5.5.330.0070.06720.84
5.5.320.0070.07320.84
5.5.310.0030.06020.77
5.5.300.0100.07020.78
5.5.290.0200.07020.82
5.5.280.0070.08020.88
5.5.270.0070.05020.78
5.5.260.0030.04320.91
5.5.250.0000.08020.70
5.5.240.0070.06020.15
5.5.230.0130.07020.25
5.5.220.0030.04020.31
5.5.210.0070.07020.21
5.5.200.0030.04320.24
5.5.190.0070.03720.16
5.5.180.0070.05320.24
5.5.160.0070.04720.00
5.5.150.0070.07020.08
5.5.140.0030.04720.14
5.5.130.0130.07320.17
5.5.120.0070.08020.23
5.5.110.0030.04720.09
5.5.100.0070.07320.12
5.5.90.0100.05720.16
5.5.80.0030.06320.07
5.5.70.0030.07020.09
5.5.60.0070.04020.16
5.5.50.0100.04720.12
5.5.40.0030.05019.97
5.5.30.0200.03319.98
5.5.20.0030.04719.96
5.5.10.0000.06020.11
5.5.00.0030.05020.02
5.4.450.0170.05019.45
5.4.440.0100.05019.36
5.4.430.0100.04719.48
5.4.420.0000.04719.17
5.4.410.0200.06719.07
5.4.400.0030.07019.18
5.4.390.0070.04318.87
5.4.380.0200.03719.12
5.4.370.0100.04718.92
5.4.360.0030.06319.04
5.4.350.0030.06318.85
5.4.340.0030.04319.13
5.4.320.0030.08018.90
5.4.310.0000.07719.21
5.4.300.0030.05718.94
5.4.290.0030.07319.13
5.4.280.0100.06318.95
5.4.270.0170.05019.12
5.4.260.0070.06318.84
5.4.250.0000.07019.02
5.4.240.0100.07319.09
5.4.230.0070.08019.04
5.4.220.0100.04019.04
5.4.210.0100.06019.06
5.4.200.0130.04719.12
5.4.190.0070.07018.89
5.4.180.0200.05318.89
5.4.170.0030.05319.14
5.4.160.0030.05318.86
5.4.150.0030.05019.03
5.4.140.0070.05316.55
5.4.130.0000.05716.39
5.4.120.0070.03716.46
5.4.110.0130.05316.39
5.4.100.0030.06316.49
5.4.90.0070.06316.45
5.4.80.0100.06716.53
5.4.70.0030.06016.54
5.4.60.0000.05016.42
5.4.50.0070.07716.44
5.4.40.0070.04016.52
5.4.30.0070.05316.30
5.4.20.0030.05016.39
5.4.10.0000.04716.47
5.4.00.0030.05015.88
5.3.290.0070.06014.59
5.3.280.0070.05314.62
5.3.270.0170.06314.65
5.3.260.0030.04714.54
5.3.250.0100.04314.57
5.3.240.0130.04314.54
5.3.230.0100.06014.74
5.3.220.0070.06314.68
5.3.210.0100.05714.70
5.3.200.0070.04014.52
5.3.190.0000.04314.56
5.3.180.0070.06014.49
5.3.170.0070.04714.66
5.3.160.0000.05014.57
5.3.150.0130.04314.63
5.3.140.0070.03714.48
5.3.130.0100.05314.69
5.3.120.0070.06714.66
5.3.110.0070.05014.48
5.3.100.0030.05014.10
5.3.90.0070.04314.09
5.3.80.0000.05013.96
5.3.70.0030.05014.02
5.3.60.0030.05314.07
5.3.50.0030.05313.99
5.3.40.0000.06013.97
5.3.30.0030.05314.03
5.3.20.0030.04313.79
5.3.10.0100.04713.55
5.3.00.0000.06713.76
5.2.170.0030.03711.17
5.2.160.0030.04711.04
5.2.150.0100.04011.20
5.2.140.0000.04011.15
5.2.130.0070.03011.21
5.2.120.0130.05311.14
5.2.110.0030.03011.01
5.2.100.0070.05311.03
5.2.90.0000.04311.21
5.2.80.0070.04011.03
5.2.70.0000.05011.14
5.2.60.0070.06011.16
5.2.50.0070.03011.08
5.2.40.0000.06310.86
5.2.30.0030.04310.89
5.2.20.0030.03710.88
5.2.10.0100.05010.92
5.2.00.0100.04310.71
5.1.60.0000.05310.66
5.1.50.0030.03310.66
5.1.40.0000.05310.66
5.1.30.0100.03310.66
5.1.20.0100.04010.66
5.1.10.0030.03310.66
5.1.00.0070.03010.66
5.0.50.0030.03010.66
5.0.40.0100.02710.66
5.0.30.0000.05710.66
5.0.20.0000.02010.66
5.0.10.0030.02010.66
5.0.00.0030.05010.66
4.4.90.0030.03310.66
4.4.80.0000.02710.66
4.4.70.0030.03010.66
4.4.60.0070.02010.66
4.4.50.0000.02710.66
4.4.40.0070.05010.66
4.4.30.0030.03010.66
4.4.20.0030.02710.66
4.4.10.0000.02310.66
4.4.00.0000.02710.66
4.3.110.0070.01710.66
4.3.100.0000.02010.66
4.3.90.0000.01710.66
4.3.80.0030.04310.66
4.3.70.0030.02010.66
4.3.60.0000.03010.66
4.3.50.0030.02710.66
4.3.40.0000.03310.66
4.3.30.0000.01710.66
4.3.20.0000.03310.66
4.3.10.0000.02710.66
4.3.00.0000.03010.66

preferences:
140.81 ms | 1398 KiB | 7 Q