its replace was done again and again 

 $li ="abbjghfg table 1 vinoth figer table2";
 $f=$li;
  while($f=~m /table[ ]([0-9])+|table([0-9])+|fig[ ][0-9]+|fig[0-9]+/i
+)
  {
     $f = $';
    #print "  after ----$f \n ";

     $match_key=$&;
       #print " --match : --$match_key \n ";

     $front=$`;
     $rep=$front."<aid=".$match_key.$';
     print" $rep \n";

  }

[download]

output come

abbjghfg <aid=table 1 vinoth figer table2 vinoth figer <aid=table2

but i tried different ways but how to do like this i dont know

need like this abbjghfg <aid=table 1 vinoth figer <aid=table2

In reply to how to do replace more then one matches? by virudinesh

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