3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { $neon = null; } $foo = new Foo(); var_dump( isset($foo->neon) );

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)
5.4.320.2270.04019.15
5.4.310.2300.04319.15
5.4.300.2070.03719.24
5.4.290.2470.03319.08
5.4.280.2330.04019.16
5.4.270.2300.04018.84
5.4.260.2370.04019.24
5.4.250.2400.02719.22
5.4.240.2330.04019.16
5.4.230.2070.03319.31
5.4.220.2330.03319.22
5.4.210.2030.03719.21
5.4.200.2400.02719.08
5.4.190.2070.03319.12
5.4.180.2230.04719.21
5.4.170.2070.04018.94
5.4.160.2430.03719.07
5.4.150.2530.04718.99
5.4.140.2200.03016.50
5.4.130.2170.03316.36
5.4.120.2130.03316.36
5.4.110.2430.03316.37
5.4.100.2270.03716.47
5.4.90.2270.03716.45
5.4.80.2130.03316.20
5.4.70.2300.04016.52
5.4.60.2100.03716.53
5.4.50.2100.03316.16
5.4.40.2100.03316.52
5.4.30.2600.03316.50
5.4.20.2200.03716.42
5.4.10.2330.03316.33
5.4.00.2130.04315.74
5.3.290.2100.03714.68
5.3.280.2600.03714.50
5.3.270.2370.03714.71
5.3.260.2070.03314.61
5.3.250.2300.04014.50
5.3.240.2170.03014.57
5.3.230.2000.03714.81
5.3.220.2130.02714.55
5.3.210.2100.03014.49
5.3.200.2300.04314.63
5.3.190.2270.04314.64
5.3.180.0270.05014.55
5.3.170.0030.07314.67
5.3.160.0000.03714.57
5.3.150.0730.04314.55
5.3.140.2270.03714.52
5.3.130.2000.04014.59
5.3.120.2130.03314.52
5.3.110.2030.03714.62
5.3.100.2330.03314.05
5.3.90.2430.04014.16
5.3.80.2230.04314.07
5.3.70.2030.03714.09
5.3.60.2230.04314.01
5.3.50.2270.04314.02
5.3.40.2270.04013.84
5.3.30.1770.04013.81
5.3.20.2200.03313.76
5.3.10.1630.04013.89
5.3.00.2600.03313.54
5.2.170.1570.02711.05
5.2.160.1530.03011.05
5.2.150.1730.03011.05
5.2.140.1600.03011.26
5.2.130.1770.03311.10
5.2.120.1830.02711.00
5.2.110.1770.02311.24
5.2.100.1730.02711.15
5.2.90.1600.03011.27
5.2.80.1700.03311.32
5.2.70.2000.04010.99
5.2.60.1770.02711.05
5.2.50.1700.03011.16
5.2.40.1300.02310.90
5.2.30.1330.03010.99
5.2.20.1370.02311.07
5.2.10.1500.03710.97
5.2.00.1430.02310.82
5.1.60.1430.0279.97
5.1.50.1230.0179.89
5.1.40.1500.02310.12
5.1.30.1270.02710.34
5.1.20.1370.03010.32
5.1.10.1400.02710.04
5.1.00.0170.02010.21
5.0.50.0000.0208.53
5.0.40.0000.0208.63
5.0.30.0000.0308.12
5.0.20.0000.0208.13
5.0.10.0030.0178.17
5.0.00.0070.0278.23
4.4.90.0030.0137.75
4.4.80.0000.0177.75
4.4.70.0170.0177.75
4.4.60.0370.0177.75
4.4.50.0630.0177.75
4.4.40.0700.0237.75
4.4.30.0770.0207.75
4.4.20.0670.0177.75
4.4.10.0670.0177.75
4.4.00.0770.0177.75
4.3.110.0730.0107.75
4.3.100.0900.0207.75
4.3.90.0730.0137.75
4.3.80.0730.0277.75
4.3.70.0670.0177.75
4.3.60.0700.0137.75
4.3.50.0730.0107.75
4.3.40.0930.0337.75
4.3.30.0500.0207.75
4.3.20.0430.0277.75
4.3.10.0430.0307.75
4.3.00.0400.0177.75

preferences:
142.34 ms | 1398 KiB | 7 Q