Code Inspection: Method '__toString' return type
Reports the __toString methods that do not return string.
Prior to PHP 7.4, this would lead to a fatal E_RECOVERABLE_ERROR level error. In PHP 7.4, a fatal non-recoverable ERROR is thrown. In PHP 8.0, the return value follows the standard PHP type semantics and will be coerced into a string if possible and if strict typing is disabled.
See __toString (php.net) for details.
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Last modified: 16 July 2021