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; $obj=2; echo 'Static object: '; var_dump($obj); if (!isset($obj)) {$a=2; // Assign the object to the static variable $obj = new stdclass($this->a); } $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)
5.6.280.0030.07321.07
5.6.260.0070.07320.69
5.6.250.0130.07720.70
5.6.240.0100.07020.58
5.6.230.0070.07720.65
5.6.220.0100.07320.66
5.6.210.0030.06320.60
5.6.200.0030.09020.67
5.6.190.0000.08020.69
5.6.180.0100.07720.63
5.6.170.0130.07720.70
5.6.160.0070.08020.61
5.6.150.0130.07320.71
5.6.140.0130.07020.71
5.6.130.0100.08020.57
5.6.120.0030.08320.86
5.6.110.0100.07720.55
5.6.100.0130.07320.70
5.6.90.0070.07720.59
5.6.80.0130.07019.95
5.6.70.0170.07320.08
5.6.60.0030.08319.95
5.6.50.0070.07720.09
5.6.40.0070.07719.93
5.6.30.0200.06719.98
5.6.20.0070.09319.89
5.6.10.0030.08319.98
5.6.00.0170.06720.01
5.5.380.0170.07017.48
5.5.370.0070.07317.54
5.5.360.0000.04317.51
5.5.350.0100.07317.68
5.5.340.0000.08318.26
5.5.330.0100.08018.07
5.5.320.0070.07017.93
5.5.310.0070.05717.93
5.5.300.0100.05318.27
5.5.290.0030.07318.23
5.5.280.0100.07318.10
5.5.270.0070.07318.22
5.5.260.0070.08317.96
5.5.250.0170.06717.95
5.5.240.0030.07717.46
5.5.230.0030.07317.52
5.5.220.0030.08017.26
5.5.210.0030.07717.51
5.5.200.0070.07717.19
5.5.190.0100.07017.48
5.5.180.0070.07717.43
5.5.160.0070.04317.31
5.5.150.0070.06017.18
5.5.140.0070.06717.45
5.5.130.0070.08017.31
5.5.120.0070.08017.28
5.5.110.0030.08317.30
5.5.100.0100.06717.48
5.5.90.0030.08017.35
5.5.80.0100.03717.08
5.5.70.0070.07017.32
5.5.60.0030.04317.20
5.5.50.0100.07717.49
5.5.40.0030.08317.34
5.5.30.0030.04317.37
5.5.20.0030.04317.46
5.5.10.0070.07317.14
5.5.00.0070.07017.16
5.4.450.0070.06719.43
5.4.440.0100.07019.34
5.4.430.0030.08019.30
5.4.420.0130.07319.55
5.4.410.0100.07019.23
5.4.400.0030.07719.19
5.4.390.0100.07319.01
5.4.380.0130.06719.18
5.4.370.0130.06319.16
5.4.360.0030.07019.32
5.4.350.0000.08318.95
5.4.340.0100.07319.01
5.4.320.0070.03319.18
5.4.310.0070.05719.03
5.4.300.0070.06719.31
5.4.290.0070.05719.18
5.4.280.0030.07719.00
5.4.270.0100.03019.16
5.4.260.0130.06319.02
5.4.250.0070.07319.16
5.4.240.0030.05719.15
5.4.230.0130.06718.96
5.4.220.0130.07019.19
5.4.210.0100.07019.14
5.4.200.0130.07019.08
5.4.190.0070.05719.00
5.4.180.0070.07719.25
5.4.170.0200.06319.01
5.4.160.0030.07719.13
5.4.150.0130.03319.21
5.4.140.0070.06716.70
5.4.130.0070.07016.36
5.4.120.0000.07016.39
5.4.110.0100.06016.71
5.4.100.0100.05016.63
5.4.90.0030.06016.32
5.4.80.0070.06316.52
5.4.70.0070.07016.40
5.4.60.0130.04716.45
5.4.50.0100.06316.54
5.4.40.0200.06016.29
5.4.30.0070.03316.53
5.4.20.0070.05316.45
5.4.10.0070.07316.39
5.4.00.0070.07315.77
5.3.290.0170.05714.67
5.3.280.0100.07014.73
5.3.270.0030.08014.60
5.3.260.0130.05014.60
5.3.250.0170.06014.70
5.3.240.0070.07314.73
5.3.230.0100.06314.58
5.3.220.0100.06714.72
5.3.210.0070.07314.54
5.3.200.0070.07714.72
5.3.190.0030.04014.71
5.3.180.0130.07014.59
5.3.170.0030.06714.58
5.3.160.0070.07714.66
5.3.150.0000.04314.58
5.3.140.0030.07314.69
5.3.130.0100.06314.57
5.3.120.0030.07714.57
5.3.110.0030.07714.56
5.3.100.0130.06014.08
5.3.90.0070.08314.07
5.3.80.0000.07714.08
5.3.70.0030.03014.11
5.3.60.0070.06713.87
5.3.50.0070.05714.03
5.3.40.0100.03713.95
5.3.30.0030.04014.00
5.3.20.0130.06013.66
5.3.10.0070.07013.62
5.3.00.0030.07313.71
5.2.170.0070.04011.88
5.2.160.0130.05711.88
5.2.150.0130.05311.88
5.2.140.0100.06011.88
5.2.130.0030.06311.88
5.2.120.0130.05311.88
5.2.110.0030.06311.88
5.2.100.0030.06311.88
5.2.90.0030.06311.88
5.2.80.0000.06711.88
5.2.70.0100.02711.88
5.2.60.0000.06711.88
5.2.50.0200.05011.88
5.2.40.0100.05311.88
5.2.30.0000.06011.88
5.2.20.0070.06011.88
5.2.10.0000.03711.88
5.2.00.0030.03311.88
5.1.60.0100.04711.88
5.1.50.0070.05311.88
5.1.40.0000.05711.88
5.1.30.0070.03711.88
5.1.20.0030.04711.88
5.1.10.0070.05011.88
5.1.00.0070.05711.88
5.0.50.0000.04311.88
5.0.40.0070.03711.88
5.0.30.0030.05311.88
5.0.20.0000.03711.88
5.0.10.0030.03711.88
5.0.00.0030.06711.88
4.4.90.0000.03711.88
4.4.80.0070.03311.88
4.4.70.0030.03311.88
4.4.60.0000.04011.88
4.4.50.0000.03711.88
4.4.40.0070.04711.88
4.4.30.0030.03311.88
4.4.20.0030.03311.88
4.4.10.0000.03311.88
4.4.00.0000.04711.88
4.3.110.0000.03711.88
4.3.100.0000.02711.88
4.3.90.0070.03011.88
4.3.80.0000.05011.88
4.3.70.0070.03011.88
4.3.60.0030.03311.88
4.3.50.0070.01011.88
4.3.40.0070.04311.88
4.3.30.0000.02011.88
4.3.20.0030.02311.88
4.3.10.0030.03011.88
4.3.00.0030.02311.88

preferences:
142.39 ms | 1386 KiB | 7 Q