(PHP 7)
ReflectionParameter::hasType — Checks if parameter has a type
public ReflectionParameter::hasType ( ) : bool
Checks if the parameter has a type associated with it.
This function has no parameters.
true if a type is specified, false otherwise.
Example #1 ReflectionParameter::hasType() example
<?php
function someFunction(string $param, $param2 = null) {}
$reflectionFunc = new ReflectionFunction('someFunction');
$reflectionParams = $reflectionFunc->getParameters();
var_dump($reflectionParams[0]->hasType());
var_dump($reflectionParams[1]->hasType()); The above example will output something similar to:
bool(true) bool(false)
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https://www.php.net/manual/en/reflectionparameter.hastype.php