In php many function available to return string in rever order but many times in interview as some question write down simple string rever function wihtout str_reverse() function PHP string reverse function Demo link : http://freeteachnology.hol.es/strreverse/ Code link : https://drive.google.com/open?id=0BxmTZPVcu72fM2RndlU4ejV6LWc Syntax : strrev(element); Eg : <?php echo strrev("Hello"); ?> Output : olleH strrev() is return string rever order but without use function following program is return string is reverse manner : <?php $original_str=”disuzajen”]; $reserve_name=str_split($original_str); $strlength=strlen($original_str); // for($i=$strlength-1;$i>=0;$i--) { //show string one by one::- echo $reserve_name[$i]; } ?> This function above php4 version. Following file structure create : 1-header.php 2-footer.php 3-index.php 1-header.php : <html xmlns="h...