Output Buffering Second

index.php

<?php 

function testFuncOne($buffer) {
	return (str_replace("Apple", "Orange", $buffer));
}

ob_start("testFuncOne");

echo "Hello Apple <br>";
echo "How are you my Apple! <br>";
echo "Another, How are you? <br>";
echo "Testing One Apple Three <br>";

ob_end_flush();

?>