(PHP 5 >= 5.6.0, PHP 7, PHP 8)
ReflectionFunctionAbstract::isVariadic — Checks if the function is variadic
public ReflectionFunctionAbstract::isVariadic(): bool
Checks if the function is variadic.
This function has no parameters.
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https://www.php.net/manual/en/reflectionfunctionabstract.isvariadic.php