Pattern: Use of unparenthesized expression containing . before +/-
Issue: -
Detects code affected by the change in operator precedence of
concatenation in PHP 8.0. In PHP < 8.0 the operator precedence of
., + and - are the same. As of PHP 8.0, the operator
precedence of the concatenation operator will be lowered to be right
below the << and >>> operators. As of PHP 7.4, a
deprecation warning will be thrown upon encountering an unparenthesized
expression containing an . before a + or -. PHP version 7.4.
PHP version 8.0