challphp

<?php
define("Con","value");
$var1="AAAA";
$var2="BBBB";
$var3="AAAA,CCCC,BBBB";

$group=array ("AAAA",2222,"BBBB",4444,"CCCC");

echo "<pre>";

$group[2]="";
$group[5]=3333;

$group2=compact("var1",$group,"var2");

$test=explode(",", $var3);

$subarr=array_slice($group,1,3);

$mergeA=array_merge($test,$subarr,$group2);

$split =array_unique($mergeA);
      @$group3=$split[""];
print_r($group3);
?>