Code Inspection: PHP 8 TypeError on arithmetic operations
Reports arithmetic and bitwise expressions with unsupported operands.
Starting with PHP 8, using the arithmetic and bitwise operators +
, -
, *
, /
, **
, %
, <<
, >>
, &
, |
, ^
, ~
, ++
, --
when one of the operands is an array, resource, or non-overloaded object will result in a TypeError
. The only exception is the array + array
merge operation, which remains supported.
See PHP's internal test source for the complete list of operations.
Last modified: 08 December 2020