3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = null; var_dump( isset($foo); );

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)
5.4.280.0200.03319.32
5.4.270.0200.04319.22
5.4.260.0230.03319.21
5.4.250.0200.03319.08
5.4.240.0230.03319.16
5.4.230.0130.05318.99
5.4.220.0170.03719.16
5.4.210.0170.03719.08
5.4.200.0200.03319.30
5.4.190.0200.04719.21
5.4.180.0270.02719.05
5.4.170.0170.03719.18
5.4.160.0200.03319.29
5.4.150.0130.04018.84
5.4.140.0200.03316.38
5.4.130.0100.04316.32
5.4.120.0170.03716.41
5.4.110.0130.04016.35
5.4.100.0000.03716.66
5.4.90.0000.03716.25
5.4.80.0030.03316.50
5.4.70.1070.03016.54
5.4.60.1300.03316.54
5.4.50.1470.03716.55
5.4.40.1300.03716.37
5.4.30.1300.03316.33
5.4.20.1500.02716.56
5.4.10.1470.03016.51
5.4.00.1500.03015.75
5.3.280.1570.03714.46
5.3.270.1400.05014.55
5.3.260.1430.03314.65
5.3.250.1370.03714.55
5.3.240.1370.03714.56
5.3.230.1530.04014.54
5.3.220.1700.03714.49
5.3.210.1570.04714.51
5.3.200.1630.04714.40
5.3.190.1570.05314.59
5.3.180.1630.04714.57
5.3.170.1670.04314.41
5.3.160.1500.03014.39
5.3.150.1700.04014.42
5.3.140.1570.04714.41
5.3.130.1670.04714.50
5.3.120.1470.03714.40
5.3.110.1330.03714.38
5.3.100.1530.03313.98
5.3.90.1500.03713.88
5.3.80.1570.03313.95
5.3.70.1770.04713.85
5.3.60.1730.04013.88
5.3.50.1800.03713.90
5.3.40.1700.04313.96
5.3.30.1730.05013.75
5.3.20.1700.04313.63
5.3.10.1600.02713.71
5.3.00.1500.03313.41
5.2.170.1700.02711.00
5.2.160.1530.03311.30
5.2.150.1230.03010.99
5.2.140.0400.03310.97
5.2.130.0170.06311.04
5.2.120.0130.04011.11
5.2.110.0130.06011.04
5.2.100.0200.03010.94
5.2.90.0130.03310.94
5.2.80.0200.03010.95
5.2.70.0130.02710.92
5.2.60.0170.05710.89
5.2.50.0200.03311.17
5.2.40.0170.05310.85
5.2.30.0100.03010.97
5.2.20.0170.04710.86
5.2.10.0170.05010.88
5.2.00.0100.04010.63
5.1.60.0100.0279.89
5.1.50.0100.0279.86
5.1.40.0100.0239.92
5.1.30.0070.03010.25
5.1.20.0200.04710.46
5.1.10.0330.05010.05
5.1.00.0200.03710.00
5.0.50.0130.0208.63
5.0.40.0130.0378.38
5.0.30.0130.0278.16
5.0.20.0100.0338.20
5.0.10.0170.0338.21
5.0.00.0070.0508.20
4.4.90.0100.0307.09
4.4.80.0130.0307.09
4.4.70.0130.0307.09
4.4.60.0100.0337.09
4.4.50.0100.0377.09
4.4.40.0100.0477.09
4.4.30.0100.0177.09
4.4.20.0030.0237.09
4.4.10.0130.0277.09
4.4.00.0070.0577.09
4.3.110.0170.0177.09
4.3.100.0130.0307.09
4.3.90.0100.0137.09
4.3.80.0130.0237.09
4.3.70.0130.0207.09
4.3.60.0070.0237.09
4.3.50.0070.0177.09
4.3.40.0070.0377.09
4.3.30.0030.0207.09
4.3.20.0030.0337.09
4.3.10.0100.0307.09
4.3.00.0030.0337.09

preferences:
140.54 ms | 1394 KiB | 7 Q