$aa[0]="9016";

$aa[1]="9017";

$aa[2]="9018";

foreach($aa as $val)

{

echo$val;

}

$aa=array(0=>"9016",1=>"9017";2=>"9018");

$aa["name"]="Joan";

$aa["num"]="9018";

$aa["email"]=abc@abc.com;

$aa=array("name"=>"joan","num"=>"9018","email"=>abc@abc.com);

$aa=array(0=>"a1",1=>"a2");

$bb=array(0=>"b1",1=>"b2");

$cc=array(0=>$aa;1=>$bb);