php removing a duplicate in a string -

first of dave chen helping me merger.

now ran problem. when merge using code:

 $string1 = " ;1 2 3 ;4 ";  $string2 = " ;1 ;2 ;3 ;4 ;5 ;6 ";  echo implode("\r\n",array_unique(array_merge(explode("\r\n",$string1),explode("\r\n",$string2)))); 

the output ;1 2 3 ;4 ;2 ;3 ;5 ;6 need ;1 2 3 ;4 ;5 ;6

you can try :

echo implode(" ", crazymerge($string1, $string2)); 

output

 ;1 2 3 ;4 ;5 ;6     

function used

function crazymerge($a, $b) {     // cleanup     $a = array_map("trim", explode("\r\n", $a));     $b = array_map("trim", explode("\r\n", $b));      $ab = array();     foreach($a $v) {         if (! in_array(ltrim($v, ";"), $ab) && ! in_array($v, $ab))             $ab[] = $v;     }     foreach($b $k => $v) {         if (! in_array(ltrim($v, ";"), $ab) && ! in_array($v, $ab))             $ab[] = $v;     }     return $ab; }