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 $obj; echo 'Static object: '; var_dump($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)
5.6.280.0070.09020.99
5.6.220.0070.06020.63
5.6.210.0030.07020.68
5.6.200.0030.08321.05
5.6.190.0030.05321.00
5.6.180.0100.05321.02
5.6.170.0000.04321.04
5.6.160.0070.08020.96
5.6.150.0070.09021.11
5.6.140.0070.04721.09
5.6.130.0100.06321.02
5.6.120.0170.07721.07
5.6.110.0100.06321.07
5.6.100.0070.06021.13
5.6.90.0030.05021.04
5.6.80.0070.07720.38
5.6.70.0030.08020.56
5.6.60.0030.08720.48
5.6.50.0070.08020.41
5.6.40.0030.08020.25
5.6.30.0030.08320.43
5.6.20.0070.05320.38
5.6.10.0030.08320.40
5.6.00.0100.06020.37
5.5.360.0100.07720.42
5.5.350.0070.08320.44
5.5.340.0000.06020.90
5.5.330.0030.04320.92
5.5.320.0030.06020.89
5.5.310.0030.08020.85
5.5.300.0000.06320.91
5.5.290.0030.08720.89
5.5.280.0030.08020.64
5.5.270.0100.08020.64
5.5.260.0030.06320.86
5.5.250.0100.07320.58
5.5.240.0030.07320.04
5.5.230.0000.07720.22
5.5.220.0100.07020.33
5.5.210.0100.06020.12
5.5.200.0030.07020.22
5.5.190.0130.07320.28
5.5.180.0030.08020.29
5.5.160.0100.06720.26
5.5.150.0070.06320.27
5.5.140.0070.07020.18
5.5.130.0070.07720.11
5.5.120.0070.07720.08
5.5.110.0070.07320.27
5.5.100.0030.07720.08
5.5.90.0030.08319.95
5.5.80.0000.07720.08
5.5.70.0070.07320.07
5.5.60.0100.04320.00
5.5.50.0000.08019.96
5.5.40.0100.05020.16
5.5.30.0030.05320.05
5.5.20.0030.07020.14
5.5.10.0100.04720.12
5.5.00.0000.05020.05
5.4.450.0070.07719.36
5.4.440.0070.04019.20
5.4.430.0070.07019.36
5.4.420.0030.07319.23
5.4.410.0100.05319.43
5.4.400.0000.07719.22
5.4.390.0030.06719.05
5.4.380.0130.07018.95
5.4.370.0030.07718.90
5.4.360.0270.06019.21
5.4.350.0030.07319.23
5.4.340.0030.08319.23
5.4.320.0070.07319.05
5.4.310.0030.05019.05
5.4.300.0100.05719.04
5.4.290.0000.06019.15
5.4.280.0100.07018.84
5.4.270.0070.05718.95
5.4.260.0030.05319.09
5.4.250.0030.08019.04
5.4.240.0130.04319.04
5.4.230.0030.08319.13
5.4.220.0000.08019.02
5.4.210.0070.05019.16
5.4.200.0030.07019.06
5.4.190.0030.07318.87
5.4.180.0070.06319.13
5.4.170.0130.03718.89
5.4.160.0070.07319.19
5.4.150.0070.07318.86
5.4.140.0100.05316.55
5.4.130.0030.07316.50
5.4.120.0030.07016.39
5.4.110.0030.07716.43
5.4.100.0000.05016.56
5.4.90.0030.07716.43
5.4.80.0070.06316.50
5.4.70.0100.07016.54
5.4.60.0030.07316.50
5.4.50.0000.08016.48
5.4.40.0100.03716.56
5.4.30.0000.06316.46
5.4.20.0030.07716.30
5.4.10.0070.03716.45
5.4.00.0070.07015.85
5.3.290.0030.07714.65
5.3.280.0100.04714.55
5.3.270.0070.05014.64
5.3.260.0000.04314.68
5.3.250.0030.07314.62
5.3.240.0100.07014.73
5.3.230.0030.07314.62
5.3.220.0000.08014.54
5.3.210.0000.08014.71
5.3.200.0000.05714.68
5.3.190.0000.08314.56
5.3.180.0030.07714.71
5.3.170.0070.06314.52
5.3.160.0030.06014.63
5.3.150.0000.07714.57
5.3.140.0000.06014.49
5.3.130.0030.07714.48
5.3.120.0000.08314.50
5.3.110.0070.06714.52
5.3.100.0070.07314.15
5.3.90.0070.05714.13
5.3.80.0000.05714.09
5.3.70.0100.04014.02
5.3.60.0000.06314.03
5.3.50.0070.06314.09
5.3.40.0030.07713.89
5.3.30.0030.06013.92
5.3.20.0000.04013.82
5.3.10.0130.06013.59
5.3.00.0000.08013.79
5.2.170.0070.06012.32
5.2.160.0070.04312.32
5.2.150.0030.06012.32
5.2.140.0070.03312.32
5.2.130.0000.04712.32
5.2.120.0030.03712.32
5.2.110.0000.05012.32
5.2.100.0030.05312.32
5.2.90.0030.05312.32
5.2.80.0030.06312.32
5.2.70.0000.05312.32
5.2.60.0000.04012.32
5.2.50.0000.05312.32
5.2.40.0030.06312.32
5.2.30.0030.06012.32
5.2.20.0030.04012.32
5.2.10.0000.03312.32
5.2.00.0070.02312.32
5.1.60.0000.02312.32
5.1.50.0070.02012.32
5.1.40.0000.02712.32
5.1.30.0000.04012.32
5.1.20.0000.03312.32
5.1.10.0000.02712.32
5.1.00.0000.03012.32
5.0.50.0000.02012.32
5.0.40.0000.02012.32
5.0.30.0000.03012.32
5.0.20.0000.02012.32
5.0.10.0000.02312.32
5.0.00.0000.03312.32
4.4.90.0000.03312.32
4.4.80.0000.02712.32
4.4.70.0000.04012.32
4.4.60.0030.02712.32
4.4.50.0000.02012.32
4.4.40.0000.02312.32
4.4.30.0000.01712.32
4.4.20.0000.01712.32
4.4.10.0030.01312.32
4.4.00.0000.02312.32
4.3.110.0000.01712.32
4.3.100.0000.01312.32
4.3.90.0000.02712.32
4.3.80.0030.02312.32
4.3.70.0000.01712.32
4.3.60.0000.01312.32
4.3.50.0000.02712.32
4.3.40.0000.02312.32
4.3.30.0000.01712.32
4.3.20.0000.01712.32
4.3.10.0000.03012.32
4.3.00.0000.02012.32

preferences:
141.72 ms | 1394 KiB | 7 Q