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; $property=3; $obj->property=2; echo "aa".$property; echo 'Static object: '; var_dump($obj); $obj = new stdclass; $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)
5.6.280.0070.06721.04
5.6.260.0130.08020.60
5.6.250.0130.07720.73
5.6.240.0100.08320.69
5.6.230.0100.06020.64
5.6.220.0170.04720.70
5.6.210.0030.05320.56
5.6.200.0200.04021.09
5.6.190.0100.07720.96
5.6.180.0070.08320.96
5.6.170.0070.08020.95
5.6.160.0070.06021.25
5.6.150.0070.08021.09
5.6.140.0070.09021.08
5.6.130.0130.08021.13
5.6.120.0230.06721.22
5.6.110.0100.08020.93
5.6.100.0030.08721.18
5.6.90.0070.08721.13
5.6.80.0200.07720.54
5.6.70.0170.06720.53
5.6.60.0100.07720.36
5.6.50.0100.06720.46
5.6.40.0030.08720.51
5.6.30.0130.07720.39
5.6.20.0170.06320.39
5.6.10.0070.08320.44
5.6.00.0170.07720.29
5.5.380.0100.04720.55
5.5.370.0030.08020.52
5.5.360.0070.05320.25
5.5.350.0100.07320.42
5.5.340.0100.04320.79
5.5.330.0030.08721.05
5.5.320.0100.07721.00
5.5.310.0170.07020.88
5.5.300.0070.07720.89
5.5.290.0130.07720.79
5.5.280.0070.06720.95
5.5.270.0130.08020.95
5.5.260.0030.08720.99
5.5.250.0070.08020.56
5.5.240.0070.07720.28
5.5.230.0100.07720.29
5.5.220.0170.07320.28
5.5.210.0000.05320.34
5.5.200.0030.08720.40
5.5.190.0100.07720.29
5.5.180.0070.05320.30
5.5.160.0030.07020.14
5.5.150.0100.04720.11
5.5.140.0200.06320.06
5.5.130.0100.07720.30
5.5.120.0170.07320.25
5.5.110.0030.08020.22
5.5.100.0030.08020.18
5.5.90.0070.07720.12
5.5.80.0100.07020.14
5.5.70.0070.04720.20
5.5.60.0030.05020.17
5.5.50.0130.06020.25
5.5.40.0070.08020.22
5.5.30.0100.08020.01
5.5.20.0100.07720.21
5.5.10.0070.04320.02
5.5.00.0100.06720.12
5.4.450.0000.09319.52
5.4.440.0130.07019.28
5.4.430.0100.07719.55
5.4.420.0130.07319.33
5.4.410.0230.03719.30
5.4.400.0130.06719.25
5.4.390.0100.07718.99
5.4.380.0230.06019.01
5.4.370.0130.05019.19
5.4.360.0100.07019.25
5.4.350.0100.07319.25
5.4.340.0270.06319.34
5.4.320.0130.07019.01
5.4.310.0130.07319.23
5.4.300.0170.06719.16
5.4.290.0100.08018.99
5.4.280.0100.07318.99
5.4.270.0030.07719.02
5.4.260.0070.07719.06
5.4.250.0030.04719.18
5.4.240.0100.07319.14
5.4.230.0170.07019.22
5.4.220.0130.06319.24
5.4.210.0000.08019.33
5.4.200.0130.04018.98
5.4.190.0030.08019.04
5.4.180.0100.07018.97
5.4.170.0100.04019.02
5.4.160.0000.04319.18
5.4.150.0100.07018.99
5.4.140.0130.06716.49
5.4.130.0030.04016.38
5.4.120.0000.08016.61
5.4.110.0100.06316.64
5.4.100.0070.07316.53
5.4.90.0100.02716.62
5.4.80.0100.07316.59
5.4.70.0030.07316.54
5.4.60.0130.06316.55
5.4.50.0100.06716.52
5.4.40.0030.06716.50
5.4.30.0030.07316.47
5.4.20.0030.07016.56
5.4.10.0030.07316.56
5.4.00.0030.05316.13
5.3.290.0100.07714.69
5.3.280.0130.07314.73
5.3.270.0070.07014.57
5.3.260.0070.07314.60
5.3.250.0170.06714.63
5.3.240.0130.04314.69
5.3.230.0170.04314.74
5.3.220.0070.06014.71
5.3.210.0070.07314.65
5.3.200.0030.07014.70
5.3.190.0030.06014.56
5.3.180.0130.05314.71
5.3.170.0070.06714.69
5.3.160.0100.04714.69
5.3.150.0000.04014.59
5.3.140.0030.04314.57
5.3.130.0100.07314.68
5.3.120.0100.07314.78
5.3.110.0000.03714.53
5.3.100.0100.06714.07
5.3.90.0030.05014.16
5.3.80.0070.03314.03
5.3.70.0000.07014.04
5.3.60.0030.03314.00
5.3.50.0070.07313.99
5.3.40.0000.07014.04
5.3.30.0100.06714.05
5.3.20.0030.06713.69
5.3.10.0070.07313.62
5.3.00.0100.05313.79
5.2.170.0000.04311.93
5.2.160.0070.05311.93
5.2.150.0030.06011.93
5.2.140.0030.05711.93
5.2.130.0030.05011.93
5.2.120.0030.05711.93
5.2.110.0070.04711.93
5.2.100.0000.06311.93
5.2.90.0030.05311.93
5.2.80.0030.04011.93
5.2.70.0030.05711.93
5.2.60.0070.06011.93
5.2.50.0000.03311.93
5.2.40.0000.03011.93
5.2.30.0030.04011.93
5.2.20.0070.05011.93
5.2.10.0030.04011.93
5.2.00.0030.05011.93
5.1.60.0100.04711.93
5.1.50.0030.04711.93
5.1.40.0030.05311.93
5.1.30.0070.05311.93
5.1.20.0070.05311.93
5.1.10.0130.02711.93
5.1.00.0000.05711.93
5.0.50.0030.04711.93
5.0.40.0030.04311.93
5.0.30.0000.07011.93
5.0.20.0030.04011.93
5.0.10.0200.03011.93
5.0.00.0030.04711.93
4.4.90.0000.03311.93
4.4.80.0030.01711.93
4.4.70.0030.03311.93
4.4.60.0030.03711.93
4.4.50.0030.01311.93
4.4.40.0000.02311.93
4.4.30.0000.03711.93
4.4.20.0000.03711.93
4.4.10.0000.03311.93
4.4.00.0000.04011.93
4.3.110.0000.03711.93
4.3.100.0030.02711.93
4.3.90.0030.03311.93
4.3.80.0000.04711.93
4.3.70.0030.02711.93
4.3.60.0000.03011.93
4.3.50.0030.03311.93
4.3.40.0030.05011.93
4.3.30.0030.03311.93
4.3.20.0000.03711.93
4.3.10.0000.03711.93
4.3.00.0030.03311.93

preferences:
144.36 ms | 1394 KiB | 7 Q