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)) { // 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)
5.6.280.0000.07721.07
5.6.220.0070.03320.62
5.6.210.0000.05020.63
5.6.200.0000.04321.06
5.6.190.0070.03720.89
5.6.180.0030.04321.18
5.6.170.0070.05721.12
5.6.160.0030.04021.04
5.6.150.0000.04321.14
5.6.140.0070.03721.04
5.6.130.0030.04321.04
5.6.120.0030.04720.99
5.6.110.0030.05321.05
5.6.100.0030.04021.07
5.6.90.0030.04720.99
5.6.80.0070.03320.40
5.6.70.0000.04020.39
5.6.60.0000.04720.34
5.6.50.0000.06320.45
5.6.40.0030.04320.38
5.6.30.0030.03720.40
5.6.20.0000.08720.41
5.6.10.0030.08020.53
5.6.00.0030.08320.38
5.5.360.0030.06720.41
5.5.350.0000.04320.44
5.5.340.0100.03320.94
5.5.330.0000.09020.80
5.5.320.0030.04020.64
5.5.310.0070.04720.92
5.5.300.0030.04020.78
5.5.290.0000.04320.91
5.5.280.0000.04320.92
5.5.270.0030.04320.83
5.5.260.0000.07020.64
5.5.250.0100.02720.59
5.5.240.0000.04020.22
5.5.230.0000.04320.20
5.5.220.0000.04020.14
5.5.210.0030.06320.24
5.5.200.0030.03020.15
5.5.190.0070.03320.18
5.5.180.0000.04020.12
5.5.160.0030.05320.19
5.5.150.0030.08020.16
5.5.140.0100.07720.14
5.5.130.0100.06720.11
5.5.120.0070.07320.28
5.5.110.0130.05020.26
5.5.100.0100.06020.09
5.5.90.0000.06019.95
5.5.80.0000.05320.10
5.5.70.0130.07319.97
5.5.60.0030.05720.11
5.5.50.0030.04020.01
5.5.40.0130.07019.96
5.5.30.0070.07320.06
5.5.20.0100.07020.08
5.5.10.0070.08020.09
5.5.00.0030.08320.00
5.4.450.0070.05719.57
5.4.440.0030.04019.45
5.4.430.0100.03019.45
5.4.420.0000.04019.45
5.4.410.0070.03719.14
5.4.400.0000.05718.88
5.4.390.0030.03719.05
5.4.380.0030.03319.13
5.4.370.0030.03719.09
5.4.360.0030.03719.09
5.4.350.0030.04719.16
5.4.340.0000.04018.88
5.4.320.0000.08318.91
5.4.310.0100.07018.88
5.4.300.0030.08319.10
5.4.290.0070.07018.89
5.4.280.0030.06318.84
5.4.270.0000.08018.94
5.4.260.0030.05318.84
5.4.250.0000.05019.04
5.4.240.0030.06019.04
5.4.230.0030.07718.84
5.4.220.0030.07719.23
5.4.210.0000.08319.12
5.4.200.0000.07719.16
5.4.190.0070.05319.11
5.4.180.0030.05719.11
5.4.170.0130.05718.84
5.4.160.0070.07718.83
5.4.150.0030.07719.19
5.4.140.0070.06316.41
5.4.130.0030.05016.50
5.4.120.0070.07016.46
5.4.110.0100.07016.33
5.4.100.0000.08016.52
5.4.90.0030.07016.40
5.4.80.0030.04716.47
5.4.70.0070.06716.54
5.4.60.0030.07016.48
5.4.50.0100.05316.54
5.4.40.0000.07316.42
5.4.30.0100.07016.36
5.4.20.0070.07016.30
5.4.10.0000.06316.36
5.4.00.0070.06715.89
5.3.290.0130.06014.72
5.3.280.0030.08014.65
5.3.270.0030.07714.67
5.3.260.0030.08014.70
5.3.250.0000.07014.67
5.3.240.0030.07714.54
5.3.230.0070.06314.57
5.3.220.0030.07014.52
5.3.210.0000.08014.63
5.3.200.0000.08014.59
5.3.190.0030.07714.69
5.3.180.0030.07314.63
5.3.170.0030.07714.54
5.3.160.0070.07314.68
5.3.150.0030.06314.55
5.3.140.0000.05314.52
5.3.130.0030.08014.50
5.3.120.0070.06314.52
5.3.110.0030.05314.55
5.3.100.0070.07013.98
5.3.90.0030.07314.07
5.3.80.0030.07313.93
5.3.70.0030.04314.13
5.3.60.0070.04713.90
5.3.50.0000.04713.89
5.3.40.0000.08013.89
5.3.30.0030.07013.92
5.3.20.0070.07013.72
5.3.10.0070.06713.76
5.3.00.0070.05313.53
5.2.170.0030.04312.26
5.2.160.0070.05712.26
5.2.150.0000.06312.26
5.2.140.0030.06312.26
5.2.130.0000.06712.26
5.2.120.0000.06012.26
5.2.110.0070.06712.26
5.2.100.0030.06012.26
5.2.90.0030.06012.26
5.2.80.0030.06312.26
5.2.70.0100.05312.26
5.2.60.0030.06312.26
5.2.50.0070.06012.26
5.2.40.0030.05312.26
5.2.30.0100.06012.26
5.2.20.0030.06312.26
5.2.10.0100.05312.26
5.2.00.0000.06312.26
5.1.60.0070.04712.26
5.1.50.0030.05312.26
5.1.40.0000.05312.26
5.1.30.0030.05312.26
5.1.20.0030.06012.26
5.1.10.0030.05312.26
5.1.00.0000.04712.26
5.0.50.0100.04012.26
5.0.40.0000.04012.26
5.0.30.0030.05312.26
5.0.20.0000.04712.26
5.0.10.0070.04012.26
5.0.00.0030.04312.26
4.4.90.0030.03012.26
4.4.80.0030.03312.26
4.4.70.0000.03712.26
4.4.60.0030.03312.26
4.4.50.0000.03312.26
4.4.40.0000.04312.26
4.4.30.0000.03012.26
4.4.20.0030.03012.26
4.4.10.0000.03312.26
4.4.00.0000.05712.26
4.3.110.0000.04012.26
4.3.100.0000.03312.26
4.3.90.0030.03312.26
4.3.80.0000.05712.26
4.3.70.0000.03712.26
4.3.60.0000.03012.26
4.3.50.0070.03012.26
4.3.40.0030.04012.26
4.3.30.0030.02712.26
4.3.20.0030.03312.26
4.3.10.0070.03012.26
4.3.00.0000.02712.26

preferences:
142.93 ms | 1394 KiB | 7 Q