Reverse a sting using loop in php

Hi , when I reverse a string using loop in php like

Code
$str="navin";


 $rstr="";


 $len=strlen($str);


for($i=$len-1;$i>=0;$i--)


{


$rstr.=$str[$i];


}


echo $rstr;
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It work but I want to know why we use .dot(.) $rstr.=$str[$i]; over here thanks in advance

navin3434
Profile Answers by navin3434 Questions by navin3434
Nov 19th, 2012
2
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Questions by navin3434

Programming

Answer

Showing Answers 1 - 2 of 2 Answers

Emiliano Gaytan

Mar 21st, 2013

To concat, . operator concats left & right values; Google it for more info

Code
$myVar = 2; // declare variable in php


print_r($myVar . "<br>");  //print on screen your variable w html brake to next line and using concat . operator


$myVar .= $myVar;  // concat  variable to itself using . operator


print_r($myVar. "<br>");// print as before