- filter_var: documentation ( source)
<?php
$str = 'It�s back to the beginning for Tom Clancy�s CIA operative in this prequel/origin story. It�s back to the beginning for Tom Clancy�s CIA operative in this prequel/origin story.';
$str = filter_var($str,FILTER_SANITIZE_STRING,FILTER_FLAG_STRIP_HIGH);
echo $str ;