(PHP 5 >= 5.3.0, PHP 7)
ReflectionFunctionAbstract::getNumberOfRequiredParameters — Gets number of required parameters
public ReflectionFunctionAbstract::getNumberOfRequiredParameters ( ) : int
Get the number of required parameters that a function defines.
This function is currently not documented; only its argument list is available.
This function has no parameters.
The number of required parameters.
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https://www.php.net/manual/en/reflectionfunctionabstract.getnumberofrequiredparameters.php