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; static $property=2; echo 'Static object: '; var_dump($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"; $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)
5.6.280.0000.07721.13
5.6.250.0170.07020.63
5.6.240.0030.09320.48
5.6.230.0070.08320.60
5.6.220.0130.04720.71
5.6.210.0100.08320.65
5.6.200.0070.06721.05
5.6.190.0100.03321.04
5.6.180.0100.08321.07
5.6.170.0030.04021.03
5.6.160.0030.09021.07
5.6.150.0100.08021.17
5.6.140.0070.08321.00
5.6.130.0030.09021.03
5.6.120.0100.07021.04
5.6.110.0070.08021.08
5.6.100.0130.07021.02
5.6.90.0030.05720.99
5.6.80.0100.04720.53
5.6.70.0100.07320.55
5.6.60.0030.05720.46
5.6.50.0170.06720.34
5.6.40.0100.06320.44
5.6.30.0130.07720.39
5.6.20.0070.08320.49
5.6.10.0100.07020.41
5.6.00.0130.03320.29
5.5.380.0030.08720.45
5.5.370.0100.05320.46
5.5.360.0030.08720.42
5.5.350.0030.08020.43
5.5.340.0200.07020.77
5.5.330.0070.05720.89
5.5.320.0030.08320.74
5.5.310.0000.05020.84
5.5.300.0030.07720.89
5.5.290.0070.04320.91
5.5.280.0100.06720.84
5.5.270.0030.04720.91
5.5.260.0200.06320.64
5.5.250.0070.07720.68
5.5.240.0100.05320.30
5.5.230.0100.07020.27
5.5.220.0030.03320.20
5.5.210.0100.06320.30
5.5.200.0170.07020.22
5.5.190.0030.06320.24
5.5.180.0030.03720.24
5.5.160.0070.04720.08
5.5.150.0070.03320.11
5.5.140.0030.08720.08
5.5.130.0170.03020.21
5.5.120.0030.08020.18
5.5.110.0070.07320.23
5.5.100.0000.03719.98
5.5.90.0130.07320.16
5.5.80.0070.03320.16
5.5.70.0100.07320.07
5.5.60.0070.07320.01
5.5.50.0070.02720.09
5.5.40.0070.07020.02
5.5.30.0100.06320.00
5.5.20.0100.05720.16
5.5.10.0100.07720.12
5.5.00.0070.07720.00
5.4.450.0030.07719.36
5.4.440.0070.07719.49
5.4.430.0230.05019.41
5.4.420.0070.06719.50
5.4.410.0100.07319.15
5.4.400.0100.02719.04
5.4.390.0100.07318.85
5.4.380.0130.02319.07
5.4.370.0070.08018.88
5.4.360.0030.07719.09
5.4.350.0130.03719.03
5.4.340.0030.08019.13
5.4.320.0130.07718.85
5.4.310.0030.07718.89
5.4.300.0100.07018.90
5.4.290.0100.07319.04
5.4.280.0000.06319.12
5.4.270.0030.07719.23
5.4.260.0070.04019.03
5.4.250.0030.04719.11
5.4.240.0030.03719.12
5.4.230.0070.06319.20
5.4.220.0100.07019.08
5.4.210.0030.08319.04
5.4.200.0070.03719.17
5.4.190.0100.07019.22
5.4.180.0030.07019.11
5.4.170.0100.07319.13
5.4.160.0070.07719.07
5.4.150.0100.05318.83
5.4.140.0000.06316.25
5.4.130.0130.06316.51
5.4.120.0100.06716.38
5.4.110.0130.03716.39
5.4.100.0030.06716.42
5.4.90.0000.08016.39
5.4.80.0030.07716.43
5.4.70.0070.07016.55
5.4.60.0070.07016.30
5.4.50.0130.06716.33
5.4.40.0030.06016.36
5.4.30.0030.03716.41
5.4.20.0130.07016.24
5.4.10.0130.06316.43
5.4.00.0030.03015.63
5.3.290.0070.08014.81
5.3.280.0130.05014.66
5.3.270.0070.08014.60
5.3.260.0070.07714.70
5.3.250.0000.08314.71
5.3.240.0070.05714.56
5.3.230.0070.07714.70
5.3.220.0030.05714.71
5.3.210.0030.06314.58
5.3.200.0130.07314.66
5.3.190.0030.06314.50
5.3.180.0070.08014.62
5.3.170.0030.07314.63
5.3.160.0100.06014.66
5.3.150.0030.08014.68
5.3.140.0130.07014.71
5.3.130.0000.05314.67
5.3.120.0030.08014.69
5.3.110.0030.06014.56
5.3.100.0070.07714.11
5.3.90.0030.07314.11
5.3.80.0000.08014.02
5.3.70.0030.03713.95
5.3.60.0000.04713.99
5.3.50.0030.03714.02
5.3.40.0070.07314.01
5.3.30.0070.03313.84
5.3.20.0070.06313.84
5.3.10.0030.06313.72
5.3.00.0100.03013.70
5.2.170.0100.04711.21
5.2.160.0030.02311.18
5.2.150.0070.06011.16
5.2.140.0100.05311.03
5.2.130.0000.03011.00
5.2.120.0000.06011.20
5.2.110.0070.02311.24
5.2.100.0070.05311.17
5.2.90.0070.02311.02
5.2.80.0000.03311.16
5.2.70.0070.06311.01
5.2.60.0000.03311.07
5.2.50.0070.05311.01
5.2.40.0100.04011.06
5.2.30.0070.03010.99
5.2.20.0030.05311.07
5.2.10.0000.06311.02
5.2.00.0000.05710.74
5.1.60.0000.03010.10
5.1.50.0030.03710.05
5.1.40.0000.0379.97
5.1.30.0030.02710.35
5.1.20.0000.02710.27
5.1.10.0030.0309.92
5.1.00.0130.04310.07
5.0.50.0030.0339.27
5.0.40.0070.0279.27
5.0.30.0000.0779.27
5.0.20.0000.0279.27
5.0.10.0000.0409.27
5.0.00.0000.0339.27
4.4.90.0000.0139.27
4.4.80.0000.0409.27
4.4.70.0070.0239.27
4.4.60.0030.0309.27
4.4.50.0000.0379.27
4.4.40.0000.0409.27
4.4.30.0030.0279.27
4.4.20.0000.0179.27
4.4.10.0000.0239.27
4.4.00.0000.0479.27
4.3.110.0000.0179.27
4.3.100.0070.0279.27
4.3.90.0030.0339.27
4.3.80.0030.0539.27
4.3.70.0030.0379.27
4.3.60.0000.0279.27
4.3.50.0030.0109.27
4.3.40.0000.0409.27
4.3.30.0000.0379.27
4.3.20.0000.0209.27
4.3.10.0000.0279.27
4.3.00.0070.0309.27

preferences:
142.49 ms | 1398 KiB | 7 Q