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StringIncrement

Emitted when incrementing a non-numeric string ($a = "a"; $a++; gives "b"). This works in PHP, but is unexpected behaviour for most people, and it is deprecated as of PHP 8.5: use str_increment() (available since PHP 8.3) instead. The issue is emitted whatever the PHP version the code is analysed for.

<?php

$a = "hello";
$a++;

How to fix

<?php

$a = "hello";
$a = str_increment($a);