3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array(); var_dump(isset($array['foo']); var_dump(array_key_exists('foo', $array));

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)
5.4.310.0080.05312.50
5.4.300.0090.03312.50
5.4.290.0070.03612.49
5.4.280.0040.04612.39
5.4.270.0080.04112.39
5.4.260.0070.03712.39
5.4.250.0040.04312.39
5.4.240.0100.04412.39
5.4.230.0060.04312.38
5.4.220.0060.04212.38
5.4.210.0070.04012.38
5.4.200.0070.04012.38
5.4.190.0070.03812.38
5.4.180.0050.04912.38
5.4.170.0060.03512.38
5.4.160.0080.03812.38
5.4.150.0060.04612.38
5.4.140.0080.04112.07
5.4.130.0050.04412.05
5.4.120.0040.04312.02
5.4.110.0050.04712.01
5.4.100.0060.03712.02
5.4.90.0050.03912.01
5.4.80.0050.03712.01
5.4.70.0080.03512.01
5.4.60.0060.04112.01
5.4.50.0080.04112.01
5.4.40.0090.03311.99
5.4.30.0070.04311.99
5.4.20.0060.03611.98
5.4.10.0060.03611.99
5.4.00.0070.04211.48
5.3.280.0090.04512.71
5.3.270.0070.04012.73
5.3.260.0040.04312.72
5.3.250.0070.04112.72
5.3.240.0060.03812.71
5.3.230.0030.04412.71
5.3.220.0050.04012.68
5.3.210.0080.04012.68
5.3.200.0050.03812.68
5.3.190.0070.03812.68
5.3.180.0060.03912.68
5.3.170.0080.03512.67
5.3.160.0030.04012.68
5.3.150.0100.03612.67
5.3.140.0130.03412.66
5.3.130.0100.04012.66
5.3.120.0090.03812.66
5.3.110.0130.04312.66
5.3.100.0050.04212.12
5.3.90.0090.03912.09
5.3.80.0080.03612.08
5.3.70.0080.03512.08
5.3.60.0090.03712.06
5.3.50.0060.03712.00
5.3.40.0080.03512.00
5.3.30.0060.03711.96
5.3.20.0080.03911.72
5.3.10.0060.04211.70
5.3.00.0080.04311.68
5.2.170.0060.0419.18
5.2.160.0050.0309.18
5.2.150.0070.0409.18
5.2.140.0100.0289.18
5.2.130.0090.0309.14
5.2.120.0040.0389.14
5.2.110.0030.0339.14
5.2.100.0080.0329.14
5.2.90.0060.0289.14
5.2.80.0030.0319.14
5.2.70.0050.0389.14
5.2.60.0030.0369.09
5.2.50.0070.0309.06
5.2.40.0040.0309.04
5.2.30.0100.0309.01
5.2.20.0060.0289.00
5.2.10.0050.0278.93
5.2.00.0040.0318.78
5.1.60.0040.0318.07
5.1.50.0050.0298.06
5.1.40.0030.0258.04
5.1.30.0040.0278.40
5.1.20.0060.0338.42
5.1.10.0060.0288.14
5.1.00.0080.0298.14
5.0.50.0010.0236.62
5.0.40.0030.0206.48
5.0.30.0030.0316.29
5.0.20.0030.0206.26
5.0.10.0040.0256.24
5.0.00.0050.0296.23
4.4.90.0060.0124.78
4.4.80.0040.0144.76
4.4.70.0040.0154.76
4.4.60.0050.0134.75
4.4.50.0030.0154.77
4.4.40.0050.0244.71
4.4.30.0040.0204.75
4.4.20.0050.0224.85
4.4.10.0020.0204.85
4.4.00.0040.0244.76
4.3.110.0020.0174.67
4.3.100.0010.0184.66
4.3.90.0040.0174.64
4.3.80.0040.0234.58
4.3.70.0010.0164.63
4.3.60.0050.0124.63
4.3.50.0020.0164.63
4.3.40.0030.0294.54
4.3.30.0020.0173.29
4.3.20.0030.0163.26
4.3.10.0020.0163.22
4.3.00.0200.01315.90

preferences:
142.37 ms | 1394 KiB | 7 Q