3v4l.org

run code in 300+ PHP versions simultaneously
<?php $obj = new stdClass(); $obj->bar = "xyz"; $data = ["foo" => "bar"]; $key = "foo"; echo $obj->{ $data[$key] },"\n"; echo $obj->{ ${'data'}[$key] },"\n"; echo "{$obj->{ $data[$key] }}\n"; echo "{$obj->{ ${'data'}[$key] }}\n"; echo "{$['obj']->{ ${'data'}[$key] }}\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)
7.0.10.0130.06720.09
7.0.00.0000.09320.32
5.6.160.0030.05320.41
5.6.150.0070.08318.18
5.6.140.0100.06018.26
5.6.130.0070.04318.21
5.6.120.0100.05021.02
5.6.110.0130.08021.14
5.6.100.0070.03721.09
5.6.90.0000.04320.97
5.6.80.0030.05720.48
5.5.300.0070.03318.08
5.5.290.0030.06318.00
5.5.280.0130.06720.80
5.5.270.0030.09320.86
5.5.260.0000.04320.88
5.5.250.0070.08320.58
5.5.240.0300.06020.28

preferences:
134.8 ms | 1394 KiB | 7 Q