3v4l.org

run code in 300+ PHP versions simultaneously
similar behaviour applies to the static statement. References are not stored statically: <?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 $obj; echo 'Static object: '; var_dump($obj); if (!isset($obj)) { // Assign the object to the static variable $obj = new stdclass; } $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)
5.6.280.0000.07721.03
5.6.250.0070.06320.82
5.6.240.0070.05320.68
5.6.230.0070.06720.64
5.6.220.0200.08020.71
5.6.210.0030.04720.76
5.6.200.0030.05321.07
5.6.190.0100.07720.96
5.6.180.0100.04021.18
5.6.170.0100.04021.12
5.6.160.0100.08321.04
5.6.150.0070.06321.01
5.6.140.0070.07721.11
5.6.130.0030.04320.95
5.6.120.0000.08320.97
5.6.110.0070.09021.10
5.6.100.0070.03321.04
5.6.90.0170.07021.01
5.6.80.0000.07720.45
5.6.70.0130.06020.55
5.6.60.0030.04720.34
5.6.50.0100.07720.35
5.6.40.0030.08020.37
5.6.30.0130.07020.45
5.6.20.0000.04720.47
5.6.10.0000.04720.45
5.6.00.0100.07320.39
5.5.380.0070.07020.43
5.5.370.0100.05020.45
5.5.360.0030.08720.39
5.5.350.0000.05020.43
5.5.340.0100.07720.79
5.5.330.0000.06020.84
5.5.320.0200.06720.89
5.5.310.0030.04720.92
5.5.300.0170.07020.93
5.5.290.0200.03320.87
5.5.280.0030.04320.81
5.5.270.0030.04720.78
5.5.260.0100.04020.77
5.5.250.0070.07720.56
5.5.240.0100.03320.26
5.5.230.0070.07720.21
5.5.220.0070.07720.18
5.5.210.0070.07320.16
5.5.200.0130.07020.01
5.5.190.0130.08020.19
5.5.180.0070.07020.19
5.5.160.0070.06720.18
5.5.150.0130.07020.22
5.5.140.0200.07020.09
5.5.130.0100.07719.96
5.5.120.0100.07020.09
5.5.110.0070.05320.26
5.5.100.0030.05020.04
5.5.90.0070.04019.98
5.5.80.0000.05720.21
5.5.70.0030.06319.94
5.5.60.0000.04720.10
5.5.50.0070.08020.06
5.5.40.0070.04020.16
5.5.30.0030.07720.08
5.5.20.0000.04719.96
5.5.10.0100.04720.04
5.5.00.0100.04019.96
5.4.450.0130.07719.45
5.4.440.0030.04319.51
5.4.430.0100.03719.37
5.4.420.0170.07019.36
5.4.410.0030.03719.40
5.4.400.0070.05318.88
5.4.390.0100.04018.88
5.4.380.0070.07018.88
5.4.370.0130.09018.90
5.4.360.0070.07719.13
5.4.350.0130.03319.21
5.4.340.0130.03318.91
5.4.320.0070.05319.04
5.4.310.0100.03719.15
5.4.300.0000.08719.12
5.4.290.0070.07319.13
5.4.280.0030.07019.13
5.4.270.0100.06019.14
5.4.260.0100.07019.18
5.4.250.0030.05019.04
5.4.240.0170.05719.02
5.4.230.0070.04319.05
5.4.220.0070.03718.89
5.4.210.0070.05719.04
5.4.200.0100.07019.09
5.4.190.0070.05019.06
5.4.180.0070.05319.11
5.4.170.0130.03719.13
5.4.160.0200.05319.21
5.4.150.0000.06319.12
5.4.140.0030.04016.25
5.4.130.0070.03316.50
5.4.120.0000.07716.50
5.4.110.0070.03716.48
5.4.100.0100.03716.49
5.4.90.0070.04016.49
5.4.80.0100.06016.52
5.4.70.0130.06316.47
5.4.60.0030.06016.38
5.4.50.0030.05716.35
5.4.40.0100.04316.30
5.4.30.0070.06716.45
5.4.20.0100.07716.33
5.4.10.0030.04016.43
5.4.00.0130.04015.88
5.3.290.0130.07014.78
5.3.280.0030.04014.62
5.3.270.0230.03714.72
5.3.260.0100.07314.61
5.3.250.0000.08014.57
5.3.240.0030.04014.59
5.3.230.0000.05014.66
5.3.220.0070.06314.55
5.3.210.0130.05314.69
5.3.200.0070.07014.70
5.3.190.0100.05314.56
5.3.180.0100.03714.50
5.3.170.0030.07014.54
5.3.160.0100.07314.63
5.3.150.0070.05314.50
5.3.140.0030.04014.59
5.3.130.0000.05014.66
5.3.120.0030.06314.53
5.3.110.0170.05714.48
5.3.100.0030.05713.99
5.3.90.0100.04314.12
5.3.80.0030.04314.08
5.3.70.0030.03714.16
5.3.60.0100.03013.93
5.3.50.0030.03014.00
5.3.40.0000.07714.01
5.3.30.0070.08013.89
5.3.20.0030.05013.59
5.3.10.0130.06713.59
5.3.00.0000.04313.75
5.2.170.0100.06011.16
5.2.160.0030.06311.04
5.2.150.0070.06311.29
5.2.140.0030.06311.18
5.2.130.0000.05011.14
5.2.120.0100.05311.21
5.2.110.0100.03311.02
5.2.100.0070.06011.02
5.2.90.0000.05711.16
5.2.80.0000.02711.11
5.2.70.0000.03011.23
5.2.60.0000.03011.08
5.2.50.0070.03710.91
5.2.40.0030.02711.03
5.2.30.0030.05011.09
5.2.20.0000.03011.07
5.2.10.0030.05010.86
5.2.00.0070.05710.83
5.1.60.0100.05310.04
5.1.50.0000.03710.07
5.1.40.0070.0309.98
5.1.30.0000.02310.35
5.1.20.0030.05310.45
5.1.10.0000.04710.16
5.1.00.0030.03710.07
5.0.50.0000.0339.68
5.0.40.0030.0479.68
5.0.30.0030.0439.68
5.0.20.0030.0409.68
5.0.10.0000.0509.68
5.0.00.0070.0309.68
4.4.90.0000.0339.68
4.4.80.0070.0309.68
4.4.70.0070.0309.68
4.4.60.0000.0209.68
4.4.50.0030.0379.68
4.4.40.0000.0539.68
4.4.30.0070.0209.68
4.4.20.0100.0279.68
4.4.10.0070.0179.68
4.4.00.0030.0239.68
4.3.110.0000.0339.68
4.3.100.0030.0179.68
4.3.90.0030.0239.68
4.3.80.0070.0479.68
4.3.70.0070.0139.68
4.3.60.0070.0239.68
4.3.50.0030.0179.68
4.3.40.0030.0379.68
4.3.30.0000.0379.68
4.3.20.0000.0379.68
4.3.10.0000.0379.68
4.3.00.0000.0179.68

preferences:
135.73 ms | 1398 KiB | 7 Q