3v4l.org

run code in 300+ PHP versions simultaneously
<?php function setByLink( &$tree, &$dst ) { $dst = &$tree[0]; $tree[] = 'Hi'; } $tree = [ &[ 1, 2 ], 3 ]; setByLink( $tree, $arr ); $arr[] = 'Hello'; var_dump( $tree );

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)
7.0.10.0030.04320.10
7.0.00.0130.08020.25
5.6.160.0100.05720.54
5.6.150.0030.08018.18
5.6.140.0070.08018.23
5.6.130.0030.08718.21
5.6.120.0030.04321.02
5.6.110.0070.04021.08
5.6.100.0100.06021.04
5.6.90.0070.08320.99
5.6.80.0100.08020.38
5.5.300.0130.05718.02
5.5.290.0130.06317.94
5.5.280.0070.05720.85
5.5.270.0000.04320.87
5.5.260.0000.08020.79
5.5.250.0170.03320.59
5.5.240.0130.07720.36

preferences:
137.97 ms | 1394 KiB | 7 Q