<?php
$str="Hello";
$rstr="";
$l=strlen($str);// string length
for($n=1; $n<=strlen($str); $n++){
    $rstr=$rstr.substr($str,($l-$n),1);
}

echo "<br><br>Orignal String<br>";
echo $str;

echo "<br><br>Reversed String<br>";
echo $rstr;
?>

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