Failed to catch: Fatal error: Cannot use $this as parameter in ...

[xenoplexus]

this will fail when I run code on a server with php 7, but will not display this as a problem when I run php7cc. I had this in several files and it gave me greens across the board.

function randomName($this) {
    $do = $this;
    return $do;
}

[sstalle]

Looks like this was introduced in 7.1. I haven't made up my mind yet on adding checks for the BC breaks introduced in 7.1 and 7.2. It seems like there aren't many of them that could be detected by static analysis (at the level php7cc does it).