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Type Hinting

In simple word, type hinting means providing hints to function to only accept the given data type.
In technical word we can say that Type Hinting is method by which we can force function to accept the desired data type.
In PHP, we can use type hinting for Object, Array and callable data type.

Example 1

<?php
	
	class a
	{
		public $c= "hello javatpoint";
	}
	//create function with class name argument
	function display(a $a1)
	{
		//call variable
		echo $a1->c;
	}
	display(new a());
?>

Output:

Example 2

<?php
	
	class Test1
	{
		public $var= "hello javatpoint and SSSIT";
	}
	//create function with class name argument
	function typehint(Test1 $t1)
	{
		//call variable
		echo $t1->var;
	}
	//call function with call name as a argument
	typehint(new Test1());
?>

Output:

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