(PHP 7 >= 7.4.0)
ReflectionReference::fromArrayElement — Create a ReflectionReference from an array element
public static ReflectionReference::fromArrayElement ( array $array , mixed $key ) : ReflectionReference
Creates a ReflectionReference from an array element.
array
The array which contains the potential reference.
key
The key; either an int or a string.
Returns a ReflectionReference instance if $array[$key] is a reference, or null otherwise.
If array is not an array, or key is not an int or string, a TypeError is thrown. If $array[$key] does not exist, a ReflectionException is thrown.
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https://www.php.net/manual/en/reflectionreference.fromarrayelement.php