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++; echo $property; return $obj; } $obj1 = get_instance_ref(); $still_obj1 = get_instance_ref(); echo "\n"; $obj2 = get_instance_noref(); $still_obj2 = 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)
5.6.280.0070.06721.07
5.6.250.0030.06320.59
5.6.240.0030.05320.57
5.6.230.0130.07720.64
5.6.220.0130.04320.58
5.6.210.0100.04720.54
5.6.200.0130.07321.04
5.6.190.0030.07320.96
5.6.180.0130.04320.99
5.6.170.0130.07720.96
5.6.160.0130.05721.03
5.6.150.0070.06720.89
5.6.140.0130.07020.87
5.6.130.0070.09021.13
5.6.120.0030.05321.09
5.6.110.0200.06320.98
5.6.100.0070.06020.98
5.6.90.0130.04720.88
5.6.80.0100.04320.28
5.6.70.0070.04720.27
5.6.60.0070.04020.26
5.6.50.0070.03720.45
5.6.40.0070.03720.43
5.6.30.0030.04020.41
5.6.20.0100.03320.33
5.6.10.0070.04320.39
5.6.00.0170.03320.32
5.5.380.0130.07020.38
5.5.370.0030.06320.50
5.5.360.0000.07320.34
5.5.350.0100.06720.42
5.5.340.0030.05720.72
5.5.330.0070.08020.79
5.5.320.0100.08720.76
5.5.310.0100.04720.71
5.5.300.0030.06320.84
5.5.290.0170.07320.79
5.5.280.0070.04720.84
5.5.270.0070.08020.82
5.5.260.0200.06020.59
5.5.250.0200.07020.60
5.5.240.0070.05320.26
5.5.230.0100.03720.16
5.5.220.0100.05020.25
5.5.210.0100.03320.21
5.5.200.0100.05720.11
5.5.190.0000.05020.23
5.5.180.0100.03720.04
5.5.160.0130.03720.18
5.5.150.0070.04020.19
5.5.140.0070.04020.07
5.5.130.0070.05020.16
5.5.120.0030.04020.09
5.5.110.0000.03720.07
5.5.100.0070.04320.00
5.5.90.0030.03320.02
5.5.80.0030.04320.00
5.5.70.0100.03319.99
5.5.60.0070.04319.89
5.5.50.0030.04020.09
5.5.40.0000.04720.10
5.5.30.0030.03320.01
5.5.20.0000.05020.01
5.5.10.0070.03719.96
5.5.00.0070.03719.99
5.4.450.0070.04019.33
5.4.440.0070.07719.20
5.4.430.0130.07019.35
5.4.420.0000.08319.45
5.4.410.0000.08019.30
5.4.400.0070.06019.04
5.4.390.0100.03719.05
5.4.380.0070.04319.05
5.4.370.0070.03318.90
5.4.360.0070.05018.88
5.4.350.0070.03719.25
5.4.340.0030.06019.13
5.4.320.0030.04319.23
5.4.310.0070.07719.23
5.4.300.0100.03719.12
5.4.290.0070.06319.18
5.4.280.0070.03719.14
5.4.270.0000.04319.09
5.4.260.0030.03719.10
5.4.250.0030.04019.18
5.4.240.0100.03319.04
5.4.230.0030.03719.02
5.4.220.0070.03718.86
5.4.210.0030.04019.04
5.4.200.0070.02719.09
5.4.190.0100.03719.22
5.4.180.0130.03019.13
5.4.170.0000.03318.93
5.4.160.0070.02718.93
5.4.150.0000.03319.12
5.4.140.0000.03716.42
5.4.130.0000.03316.44
5.4.120.0070.02716.41
5.4.110.0030.03316.44
5.4.100.0100.03016.49
5.4.90.0130.02716.46
5.4.80.0130.06016.47
5.4.70.0030.06016.53
5.4.60.0070.03016.41
5.4.50.0100.06316.44
5.4.40.0170.07316.47
5.4.30.0100.07016.33
5.4.20.0030.07316.30
5.4.10.0130.07716.36
5.4.00.0100.07315.80
5.3.290.0100.04314.63
5.3.280.0030.04014.61
5.3.270.0000.03714.67
5.3.260.0000.04314.73
5.3.250.0000.03714.68
5.3.240.0030.03014.62
5.3.230.0030.03714.55
5.3.220.0070.03314.63
5.3.210.0030.05014.69
5.3.200.0030.03014.54
5.3.190.0000.03314.63
5.3.180.0070.03714.50
5.3.170.0100.03014.63
5.3.160.0030.08314.67
5.3.150.0070.06714.66
5.3.140.0070.06714.51
5.3.130.0100.07314.69
5.3.120.0100.06314.58
5.3.110.0000.06314.47
5.3.100.0070.07714.15
5.3.90.0100.04314.00
5.3.80.0000.04714.02
5.3.70.0100.05313.93
5.3.60.0070.06314.07
5.3.50.0100.03013.84
5.3.40.0030.07314.04
5.3.30.0000.04014.02
5.3.20.0070.05713.68
5.3.10.0070.06713.66
5.3.00.0130.06313.71
5.2.170.0100.03011.20
5.2.160.0030.05711.14
5.2.150.0070.04011.06
5.2.140.0100.05711.07
5.2.130.0070.04711.09
5.2.120.0000.06311.02
5.2.110.0000.05311.05
5.2.100.0070.03711.01
5.2.90.0070.05711.21
5.2.80.0100.03711.11
5.2.70.0070.05011.15
5.2.60.0070.04710.97
5.2.50.0030.06711.08
5.2.40.0030.03710.86
5.2.30.0030.03011.03
5.2.20.0070.05711.05
5.2.10.0030.05010.78
5.2.00.0100.03710.76
5.1.60.0100.0479.85
5.1.50.0030.0539.87
5.1.40.0030.02310.06
5.1.30.0030.03710.40
5.1.20.0000.03010.27
5.1.10.0030.04010.07
5.1.00.0030.04310.13
5.0.50.0030.0208.39
5.0.40.0030.0438.26
5.0.30.0030.0638.22
5.0.20.0030.0408.31
5.0.10.0030.0408.30
5.0.00.0000.0538.27
4.4.90.0030.0337.47
4.4.80.0000.0377.47
4.4.70.0000.0307.47
4.4.60.0030.0337.47
4.4.50.0070.0307.47
4.4.40.0070.0477.47
4.4.30.0000.0207.47
4.4.20.0000.0177.47
4.4.10.0070.0137.47
4.4.00.0000.0307.47
4.3.110.0000.0237.47
4.3.100.0000.0177.47
4.3.90.0000.0377.47
4.3.80.0000.0477.47
4.3.70.0030.0177.47
4.3.60.0070.0207.47
4.3.50.0000.0277.47
4.3.40.0070.0237.47
4.3.30.0030.0237.47
4.3.20.0000.0177.47
4.3.10.0030.0337.47
4.3.00.0000.0177.47

preferences:
144.2 ms | 1394 KiB | 7 Q