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)) { // 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"; $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)
5.6.280.0000.07321.14
5.6.220.0030.08720.74
5.6.210.0070.05720.44
5.6.200.0030.06020.93
5.6.190.0070.08320.97
5.6.180.0070.07721.03
5.6.170.0030.08321.07
5.6.160.0000.08020.96
5.6.150.0030.04021.12
5.6.140.0000.07721.04
5.6.130.0000.08321.08
5.6.120.0070.08021.09
5.6.110.0170.07721.10
5.6.100.0070.04721.06
5.6.90.0000.08021.10
5.6.80.0030.08320.46
5.6.70.0000.06320.49
5.6.60.0100.05720.49
5.6.50.0030.08020.53
5.6.40.0030.08320.50
5.6.30.0030.07720.33
5.6.20.0070.04720.53
5.6.10.0000.04720.39
5.6.00.0170.06720.26
5.5.360.0100.08320.51
5.5.350.0030.05020.46
5.5.340.0070.05020.89
5.5.330.0070.08020.88
5.5.320.0070.08020.78
5.5.310.0070.08020.77
5.5.300.0030.08020.88
5.5.290.0030.08720.91
5.5.280.0070.08020.65
5.5.270.0000.08020.91
5.5.260.0030.08720.76
5.5.250.0030.06320.55
5.5.240.0000.08320.16
5.5.230.0070.08320.21
5.5.220.0070.07720.24
5.5.210.0030.07320.19
5.5.200.0030.04020.19
5.5.190.0030.04020.15
5.5.180.0000.04320.26
5.5.160.0000.05720.09
5.5.150.0030.04020.28
5.5.140.0030.03719.97
5.5.130.0030.04020.15
5.5.120.0000.08020.12
5.5.110.0000.04020.22
5.5.100.0000.04020.04
5.5.90.0030.04020.02
5.5.80.0100.06320.17
5.5.70.0130.07319.94
5.5.60.0030.04020.08
5.5.50.0070.04720.07
5.5.40.0030.07720.09
5.5.30.0070.03720.06
5.5.20.0000.04320.04
5.5.10.0000.04020.10
5.5.00.0000.04020.05
5.4.450.0030.08319.21
5.4.440.0070.04319.18
5.4.430.0030.04719.35
5.4.420.0030.08319.53
5.4.410.0000.06319.26
5.4.400.0100.07319.23
5.4.390.0000.08318.90
5.4.380.0130.07019.23
5.4.370.0030.04018.91
5.4.360.0000.05318.95
5.4.350.0000.07319.03
5.4.340.0030.04719.05
5.4.320.0000.04719.04
5.4.310.0000.04319.13
5.4.300.0030.06019.15
5.4.290.0000.03718.94
5.4.280.0000.04019.15
5.4.270.0000.03719.04
5.4.260.0030.03719.12
5.4.250.0000.08018.94
5.4.240.0030.04319.23
5.4.230.0000.04019.13
5.4.220.0000.04319.12
5.4.210.0030.03319.12
5.4.200.0070.04018.94
5.4.190.0000.04019.03
5.4.180.0070.03319.11
5.4.170.0070.03718.84
5.4.160.0070.03319.22
5.4.150.0070.04019.19
5.4.140.0000.03716.46
5.4.130.0030.03316.24
5.4.120.0070.06316.37
5.4.110.0000.03716.39
5.4.100.0030.04716.56
5.4.90.0000.03716.59
5.4.80.0000.04016.41
5.4.70.0070.05316.43
5.4.60.0070.06016.36
5.4.50.0030.03316.39
5.4.40.0000.03716.39
5.4.30.0000.03716.39
5.4.20.0030.03316.50
5.4.10.0030.03316.33
5.4.00.0000.03715.90
5.3.290.0000.04714.78
5.3.280.0000.06714.58
5.3.270.0030.03714.72
5.3.260.0000.04014.63
5.3.250.0030.03314.66
5.3.240.0000.03714.54
5.3.230.0000.05714.62
5.3.220.0000.05014.54
5.3.210.0030.04714.63
5.3.200.0030.03314.62
5.3.190.0000.03714.68
5.3.180.0030.03714.57
5.3.170.0000.03714.55
5.3.160.0000.04314.55
5.3.150.0000.04014.68
5.3.140.0000.03714.58
5.3.130.0000.03714.61
5.3.120.0000.03714.47
5.3.110.0000.03714.58
5.3.100.0030.04714.18
5.3.90.0000.04013.99
5.3.80.0000.03713.95
5.3.70.0030.05713.95
5.3.60.0000.03713.91
5.3.50.0000.03714.01
5.3.40.0030.03314.01
5.3.30.0000.07313.92
5.3.20.0070.06713.58
5.3.10.0030.05313.59
5.3.00.0030.07313.57
5.2.170.0030.02712.40
5.2.160.0000.03712.40
5.2.150.0070.02312.40
5.2.140.0030.06312.40
5.2.130.0070.05712.40
5.2.120.0070.06012.40
5.2.110.0030.04712.40
5.2.100.0000.06312.40
5.2.90.0000.04312.40
5.2.80.0030.06712.40
5.2.70.0000.06312.40
5.2.60.0030.03012.40
5.2.50.0070.06012.40
5.2.40.0000.06312.40
5.2.30.0070.05712.40
5.2.20.0070.06012.40
5.2.10.0000.06712.40
5.2.00.0070.04312.40
5.1.60.0070.04312.40
5.1.50.0000.03012.40
5.1.40.0000.05712.40
5.1.30.0030.07012.40
5.1.20.0000.03712.40
5.1.10.0070.04712.40
5.1.00.0070.05312.40
5.0.50.0100.03012.40
5.0.40.0030.04012.40
5.0.30.0070.04712.40
5.0.20.0000.04312.40
5.0.10.0030.03712.40
5.0.00.0000.06712.40
4.4.90.0030.02312.40
4.4.80.0000.01712.40
4.4.70.0000.02712.40
4.4.60.0000.03712.40
4.4.50.0000.02712.40
4.4.40.0000.03712.40
4.4.30.0000.01712.40
4.4.20.0000.03712.40
4.4.10.0000.04012.40
4.4.00.0000.05712.40
4.3.110.0000.03712.40
4.3.100.0000.02012.40
4.3.90.0030.03312.40
4.3.80.0000.05012.40
4.3.70.0000.02712.40
4.3.60.0000.03712.40
4.3.50.0000.03012.40
4.3.40.0030.03712.40
4.3.30.0000.02712.40
4.3.20.0030.03712.40
4.3.10.0000.03712.40
4.3.00.0000.03712.40

preferences:
146.82 ms | 1398 KiB | 7 Q