PHP two tables merged into a new table and ordered

PHP Tutorial Two tables merged into a new table and sorted in order
<?php

/**
La (3,5,8,11)
LB (2,6,8,9,11,15)
Merged into LC, arranged in order.
With PHP, you can't use functions like sort!!!!
**/

Class Union {


var $lista = array ();


var $listb = array ();


var $listc = array ();


   


function Getlenght ($arr) {//Get table length


return count ($arr);


    }


   


function GetElement ($arr, $n) {//Get the nth element in the table, return


return $e = $arr [$n]? $arr [$n]: ';


    }


   


function Listinsert ($arr, $e) {//end of table Insert element


$arr [] = $e;


return $arr;


    }


   


 


}


$phpig = new Union ();


$lista = $phpig-&gt;lista = Array (3, 5, 8, 11);


$listb = $phpig-&gt;listb = Array (2, 6, 8, 9, 11, 15);


$LISTC = $phpig-&gt;listc;


$lena = $phpig-&gt;getlenght ($lista); Get Table Size


$lenb = $phpig-&gt;getlenght ($LISTB);


$i = $j = 0;


while ($i &lt; $lena &amp;&amp; $j &lt; $lenb) {


$ea = $phpig-&gt;getelement ($lista, $i);


$eb = $phpig-&gt;getelement ($LISTB, $j);


if ($ea &lt;= $eb) {


$LISTC = $phpig-&gt;listinsert ($LISTC, $ea);


+ + $i;


else {


$LISTC = $phpig-&gt;listinsert ($LISTC, $eb);


+ + $j;


    }


}


while ($i &lt; $lena) {


$ea = $phpig-&gt;getelement ($lista, $i);


$LISTC = $phpig-&gt;listinsert ($LISTC, $ea);


+ + $i;


}


while ($j &lt; $lenb) {


$eb = $phpig-&gt;getelement ($LISTB, $j);


$LISTC = $phpig-&gt;listinsert ($LISTC, $eb);


+ + $j;


}

Print_r ($LISTC);
?>