offsetAccess.noDim

Code example

<?php declare(strict_types = 1);

$array = [1, 2, 3];
$value = $array[];

Why is it reported?

The empty dimension syntax $array[] is being used for reading. In PHP, $array[] without a dimension index is only valid on the left side of an assignment (e.g., $array[] = $value), where it appends a new element. Using it for reading has no meaning and will produce a fatal error at runtime.

How to fix it

Specify an explicit array index or key to access the desired element.

 <?php declare(strict_types = 1);

 $array = [1, 2, 3];
-$value = $array[];
+$value = $array[0];