Last modified: 16 May 2022

Reports arithmetic and bitwise expressions with unsupported operands.

Starting with PHP 8.0, 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.

Suppress an inspection in the editor

1. Place the caret at the highlighted line and press AltEnter or click .

2. Click the arrow next to the inspection you want to suppress and select the necessary suppress action.