Reverse a sting using loop in php

Hi , when I reverse a string using loop in php like
Code
  1. $str="navin";

    2. 

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

Questions by navin3434

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Emiliano Gaytan

  • Mar 21st, 2013
 

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

Code
  1. span style="font-style: italic;">// declare variable in php

    2. 

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

    3. 

  3. // concat  variable to itself using . operator

    4. 

  4. "<br>");// print as before

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