3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(empty($test)); var_dump(isset($test) && is_null($test)); // undefined $test=null; var_dump(isset($test) && is_null($test)); if (empty (! $i1 {)) print "\$i1 is assigned a value \ n" ; } else { print "\$i1 does not exist or has no value assigned to \ n" ; }

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)
5.4.290.0070.05512.50
5.4.280.0040.04412.39
5.4.270.0050.03612.39
5.4.260.0070.03612.39
5.4.250.0050.03912.39
5.4.240.0060.03512.39
5.4.230.0050.03812.38
5.4.220.0070.03512.38
5.4.210.0060.03512.38
5.4.200.0060.03912.38
5.4.190.0060.03612.38
5.4.180.0070.03912.38
5.4.170.0100.03312.39
5.4.160.0050.03712.38
5.4.150.0050.03712.38
5.4.140.0100.03312.07
5.4.130.0070.03612.05
5.4.120.0060.05112.01
5.4.110.0110.03812.01
5.4.100.0090.04112.01
5.4.90.0060.03712.01
5.4.80.0110.03712.01
5.4.70.0050.04312.01
5.4.60.0060.03612.00
5.4.50.0050.03812.01
5.4.40.0060.03612.00
5.4.30.0060.03712.00
5.4.20.0060.03511.98
5.4.10.0150.02711.99
5.4.00.0060.04711.48
5.3.280.0110.04812.71
5.3.270.0150.06312.72
5.3.260.0050.06112.72
5.3.250.0130.04012.72
5.3.240.0060.04312.72
5.3.230.0050.03912.71
5.3.220.0070.04312.68
5.3.210.0090.03712.68
5.3.200.0080.03512.68
5.3.190.0090.05412.68
5.3.180.0090.05412.67
5.3.170.0050.03712.66
5.3.160.0100.05112.67
5.3.150.0060.05612.68
5.3.140.0120.04812.66
5.3.130.0110.07112.66
5.3.120.0050.04112.66
5.3.110.0070.04112.66
5.3.100.0050.03912.12
5.3.90.0070.03712.08
5.3.80.0070.04012.08
5.3.70.0080.03512.08
5.3.60.0010.04012.07
5.3.50.0110.04712.00
5.3.40.0040.04812.00
5.3.30.0040.03711.95
5.3.20.0110.03311.73
5.3.10.0040.03711.70
5.3.00.0030.03911.68
5.2.170.0040.0329.18
5.2.160.0050.0309.19
5.2.150.0020.0339.18
5.2.140.0040.0339.18
5.2.130.0090.0269.14
5.2.120.0060.0279.14
5.2.110.0030.0329.15
5.2.100.0070.0389.15
5.2.90.0070.0419.15
5.2.80.0050.0349.14
5.2.70.0060.0299.14
5.2.60.0060.0339.09
5.2.50.0070.0369.06
5.2.40.0050.0329.04
5.2.30.0040.0319.02
5.2.20.0060.0289.00
5.2.10.0070.0268.93
5.2.00.0030.0308.79
5.1.60.0070.0218.07
5.1.50.0050.0248.07
5.1.40.0050.0248.05
5.1.30.0050.0258.40
5.1.20.0030.0278.42
5.1.10.0030.0278.14
5.1.00.0050.0248.14
5.0.50.0040.0206.63
5.0.40.0030.0206.48
5.0.30.0060.0296.29
5.0.20.0030.0206.27
5.0.10.0020.0236.24
5.0.00.0020.0336.23
4.4.90.0020.0184.78
4.4.80.0020.0174.75
4.4.70.0040.0174.75
4.4.60.0070.0154.75
4.4.50.0020.0174.77
4.4.40.0030.0304.70
4.4.30.0030.0204.76
4.4.20.0040.0194.84
4.4.10.0060.0184.84
4.4.00.0030.0274.76
4.3.110.0020.0164.67
4.3.100.0020.0164.66
4.3.90.0030.0224.63
4.3.80.0060.0314.58
4.3.70.0020.0204.63
4.3.60.0030.0174.62
4.3.50.0040.0144.63
4.3.40.0010.0264.54
4.3.30.0030.0173.29
4.3.20.0010.0173.27
4.3.10.0010.0163.22
4.3.00.0000.0307.14

preferences:
140.25 ms | 1394 KiB | 7 Q