Explode ile Karakter Kesmek

$sayimiz=(string)234;
echo $sayimiz{0};
echo $sayimiz{1};
echo $sayimiz{2};

<?php
	
	$string = "saintx ogün";
	
	$length = strlen($string);
	
	for($i = 0; $i < $length; ++$i)
	{
		echo $i . " -> " . $string{$i} . "\n";
	}
	
	/**
	 * Çıktı;
	 * 
	 * 0 -> s
	 * 1 -> a
	 * 2 -> i
	 * 3 -> n
	 * 4 -> t
	 * 5 -> x
	 * 6 ->  
	 * 7 -> o
	 * 8 -> g
	 * 9 -> ü
	 * 10 -> n
	 *
	 */