(PHP 5 >= 5.2.0, PHP 7, PHP 8)
ReflectionFunctionAbstract::returnsReference — Checks if returns reference
public ReflectionFunctionAbstract::returnsReference(): bool
Checks whether the function returns a reference.
This function has no parameters.
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https://www.php.net/manual/en/reflectionfunctionabstract.returnsreference.php