<?php
// function in lib.php
 require_once("lib.php");

 $ar = array(5,2,4,3,1,7,10,8,9);

 sort($ar);
 $kel=count($ar);

    $ll=rand(0,100);

 if(array_search($ll,$ar)){
      $por=array_search($ll,$ar);

        for($i=$por+1;$i<($kel+1);$i++)
        {
          $zm = $ar[$i];
          $ar[$i] = $ll;
          $ll = $zm;
        }
 }

 if(!array_search($ll,$ar)){

         if($ar[$kel-1]>$ll) {
             $zn= find ($ar,(int)$kel/2,$ll);
             $por=array_search($zn,$ar);

                 for($i=$por+1;$i<($kel+1);$i++)
               {
                       $zm = $ar[$i];
                       $ar[$i] = $ll;
                       $ll = $zm;
                }

         }


         if($ar[$kel-1]<$ll) {
          array_push($ar,$ll);
          }

         print_r( $ar);

   }




 ?>