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Reverse a sting using loop in php
Hi , when I reverse a string using loop in php like {geshibot language="php"}$str="navin"; $rstr=""; $len=strlen($str); for($i=$len-1;$i>=0;$i--) { $rstr.=$str[$i]; } echo $rstr;{/geshibot} It work but I want to know why we use .dot(.) $rstr.=$str[$i]; over here thanks in advance