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($obj); if (!isset($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)
5.6.280.0070.07020.93
5.6.220.0000.06020.71
5.6.210.0070.06720.46
5.6.200.0030.08321.04
5.6.190.0070.07321.18
5.6.180.0070.04321.14
5.6.170.0030.08020.95
5.6.160.0070.06321.11
5.6.150.0000.08021.14
5.6.140.0070.08321.11
5.6.130.0130.10721.11
5.6.120.0000.07721.02
5.6.110.0200.07321.01
5.6.100.0070.07321.01
5.6.90.0030.09021.05
5.6.80.0070.04320.53
5.6.70.0130.07320.49
5.6.60.0030.08320.46
5.6.50.0130.07320.45
5.6.40.0070.07720.39
5.6.30.0030.08020.41
5.6.20.0100.07720.38
5.6.10.0030.07720.39
5.6.00.0100.07320.39
5.5.360.0000.08320.38
5.5.350.0030.04720.35
5.5.340.0030.06020.93
5.5.330.0100.07320.75
5.5.320.0030.05320.88
5.5.310.0070.04320.83
5.5.300.0030.08020.87
5.5.290.0000.08020.86
5.5.280.0100.04720.77
5.5.270.0100.07020.64
5.5.260.0030.08020.89
5.5.250.0030.08320.73
5.5.240.0000.08020.17
5.5.230.0030.07320.18
5.5.220.0000.08020.02
5.5.210.0030.06320.28
5.5.200.0100.07319.99
5.5.190.0100.07720.27
5.5.180.0000.08320.17
5.5.160.0030.07720.26
5.5.150.0070.07320.28
5.5.140.0030.08320.04
5.5.130.0070.05020.11
5.5.120.0070.05320.00
5.5.110.0000.06020.18
5.5.100.0030.08320.08
5.5.90.0000.08720.01
5.5.80.0030.08320.07
5.5.70.0000.08320.01
5.5.60.0000.06020.07
5.5.50.0130.06720.16
5.5.40.0030.07019.94
5.5.30.0070.07719.92
5.5.20.0100.07720.10
5.5.10.0000.08320.11
5.5.00.0070.05720.01
5.4.450.0100.07719.47
5.4.440.0030.07319.51
5.4.430.0030.05719.55
5.4.420.0100.04719.45
5.4.410.0030.06319.14
5.4.400.0000.04019.05
5.4.390.0070.07319.04
5.4.380.0070.03319.16
5.4.370.0000.07719.03
5.4.360.0000.08319.23
5.4.350.0030.08019.13
5.4.340.0000.07319.09
5.4.320.0130.07319.11
5.4.310.0030.06719.03
5.4.300.0000.08019.03
5.4.290.0070.06318.87
5.4.280.0100.07018.95
5.4.270.0030.04719.02
5.4.260.0030.08019.18
5.4.250.0070.04719.04
5.4.240.0070.04319.18
5.4.230.0030.07319.23
5.4.220.0030.06719.17
5.4.210.0030.06019.12
5.4.200.0030.08019.22
5.4.190.0070.07019.20
5.4.180.0100.07319.07
5.4.170.0100.07018.94
5.4.160.0030.07718.86
5.4.150.0070.05719.18
5.4.140.0030.07716.48
5.4.130.0030.05716.55
5.4.120.0000.05316.49
5.4.110.0030.07316.49
5.4.100.0000.07016.48
5.4.90.0030.05316.57
5.4.80.0030.03716.36
5.4.70.0100.06716.36
5.4.60.0000.06316.25
5.4.50.0070.03316.48
5.4.40.0130.04716.32
5.4.30.0070.06716.41
5.4.20.0070.07016.44
5.4.10.0000.07716.37
5.4.00.0000.07315.90
5.3.290.0030.08014.74
5.3.280.0030.04314.62
5.3.270.0030.07314.57
5.3.260.0100.05314.72
5.3.250.0030.04014.72
5.3.240.0030.06714.67
5.3.230.0030.07014.57
5.3.220.0070.06714.55
5.3.210.0070.05014.64
5.3.200.0030.07314.63
5.3.190.0000.05014.60
5.3.180.0030.07314.70
5.3.170.0100.07014.50
5.3.160.0070.07314.58
5.3.150.0070.07714.63
5.3.140.0100.06714.55
5.3.130.0000.05714.54
5.3.120.0030.05714.70
5.3.110.0130.06714.63
5.3.100.0030.07714.13
5.3.90.0000.06014.12
5.3.80.0030.05014.03
5.3.70.0000.06714.16
5.3.60.0070.06313.98
5.3.50.0030.07314.03
5.3.40.0000.07313.89
5.3.30.0030.07713.97
5.3.20.0070.05313.60
5.3.10.0030.06713.67
5.3.00.0000.06013.63
5.2.170.0030.06012.35
5.2.160.0030.06012.35
5.2.150.0000.05312.35
5.2.140.0070.06012.35
5.2.130.0030.06012.35
5.2.120.0000.06712.35
5.2.110.0030.05312.35
5.2.100.0030.04312.35
5.2.90.0030.03712.35
5.2.80.0070.03312.35
5.2.70.0070.04712.35
5.2.60.0030.03012.35
5.2.50.0000.05012.35
5.2.40.0030.05712.35
5.2.30.0000.06312.35
5.2.20.0100.04712.35
5.2.10.0070.05012.35
5.2.00.0030.06312.35
5.1.60.0070.05312.35
5.1.50.0030.04312.35
5.1.40.0030.05312.35
5.1.30.0000.05712.35
5.1.20.0070.05012.35
5.1.10.0070.04012.35
5.1.00.0030.05012.35
5.0.50.0070.03312.35
5.0.40.0070.04312.35
5.0.30.0030.06312.35
5.0.20.0000.03312.35
5.0.10.0000.04712.35
5.0.00.0030.04312.35
4.4.90.0000.02312.35
4.4.80.0000.03712.35
4.4.70.0000.03012.35
4.4.60.0030.03312.35
4.4.50.0000.03712.35
4.4.40.0000.05012.35
4.4.30.0000.02712.35
4.4.20.0030.03312.35
4.4.10.0000.03312.35
4.4.00.0000.04012.35
4.3.110.0000.03312.35
4.3.100.0000.03712.35
4.3.90.0000.03312.35
4.3.80.0000.02712.35
4.3.70.0000.01312.35
4.3.60.0000.01712.35
4.3.50.0030.03312.35
4.3.40.0030.05012.35
4.3.30.0000.02012.35
4.3.20.0070.03312.35
4.3.10.0000.03712.35
4.3.00.0000.03312.35

preferences:
139.82 ms | 1394 KiB | 7 Q