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2024.3

Illegal string offset

Warning
New
Last modified: 03 December 2024

Reports the usages of non-integer offsets in string access expressions such as $str[42].

Starting from PHP 5.4, string offsets have to be either integers or integer-like strings. Since it's considered bad practice to use strings as a string offset, the inspection reports them, as well.

See String access and modification by character (php.net) for details.