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)
5.4.290.0060.03912.50
5.4.280.0070.03512.39
5.4.270.0070.03612.39
5.4.260.0080.03612.39
5.4.250.0070.03712.39
5.4.240.0070.03512.39
5.4.230.0090.03712.38
5.4.220.0070.03412.38
5.4.210.0040.03612.38
5.4.200.0050.03712.38
5.4.190.0080.03412.38
5.4.180.0070.03512.38
5.4.170.0050.03712.38
5.4.160.0050.03812.38
5.4.150.0090.03512.38
5.4.140.0060.03812.07
5.4.130.0050.03712.05
5.4.120.0080.03412.01
5.4.110.0070.03512.01
5.4.100.0090.04212.01
5.4.90.0030.05012.01
5.4.80.0070.03712.01
5.4.70.0070.03512.01
5.4.60.0090.03412.01
5.4.50.0080.03312.00
5.4.40.0060.03412.00
5.4.30.0040.03811.99
5.4.20.0050.03711.98
5.4.10.0060.03511.99
5.4.00.0030.04211.48
5.3.280.0060.04712.71
5.3.270.0050.04212.72
5.3.260.0080.03912.72
5.3.250.0070.03712.72
5.3.240.0070.03612.72
5.3.230.0070.03812.71
5.3.220.0080.03512.68
5.3.210.0100.03612.68
5.3.200.0070.04112.68
5.3.190.0070.03712.68
5.3.180.0060.03612.68
5.3.170.0060.03612.67
5.3.160.0050.03912.68
5.3.150.0030.04112.67
5.3.140.0070.03612.66
5.3.130.0070.03712.66
5.3.120.0040.04112.66
5.3.110.0060.04112.66
5.3.100.0060.03712.12
5.3.90.0090.03512.08
5.3.80.0050.03712.07
5.3.70.0050.03712.08
5.3.60.0030.03912.06
5.3.50.0060.03612.00
5.3.40.0050.03812.00
5.3.30.0040.03811.95
5.3.20.0070.04011.73
5.3.10.0070.03611.70
5.3.00.0070.03511.68
5.2.170.0090.0309.18
5.2.160.0060.0319.18
5.2.150.0090.0339.18
5.2.140.0030.0339.18
5.2.130.0040.0309.14
5.2.120.0080.0269.14
5.2.110.0070.0299.15
5.2.100.0060.0279.15
5.2.90.0040.0309.14
5.2.80.0020.0339.14
5.2.70.0060.0309.14
5.2.60.0060.0299.09
5.2.50.0060.0289.06
5.2.40.0040.0309.04
5.2.30.0040.0319.01
5.2.20.0040.0309.00
5.2.10.0030.0308.94
5.2.00.0040.0308.79
5.1.60.0040.0278.07
5.1.50.0030.0288.07
5.1.40.0060.0338.05
5.1.30.0050.0338.40
5.1.20.0050.0438.43
5.1.10.0040.0288.15
5.1.00.0040.0268.15
5.0.50.0040.0286.63
5.0.40.0040.0206.48
5.0.30.0110.0596.29
5.0.20.0080.0426.26
5.0.10.0070.0356.24
5.0.00.0040.0436.23
4.4.90.0030.0234.78
4.4.80.0050.0214.76
4.4.70.0050.0204.75
4.4.60.0030.0184.75
4.4.50.0020.0174.77
4.4.40.0010.0284.71
4.4.30.0040.0214.76
4.4.20.0070.0224.84
4.4.10.0070.0314.85
4.4.00.0040.0284.76
4.3.110.0040.0144.67
4.3.100.0030.0154.67
4.3.90.0070.0194.63
4.3.80.0050.0254.58
4.3.70.0030.0164.63
4.3.60.0030.0154.63
4.3.50.0020.0174.63
4.3.40.0040.0294.54
4.3.30.0040.0193.29
4.3.20.0040.0203.27
4.3.10.0050.0193.22
4.3.00.0130.02016.16

preferences:
140.88 ms | 1394 KiB | 7 Q