Insert variable in array if not present

I would like to insert variables in an array. I am using in_array() function to check if a value has already been inserted and array_push to append elements to the array.

Working example

<?php $var1="cat"; $var2="dog"; $var3="gepp"; $var4="frigor"; $var5="dog"; $var6='cat'; $array1=array($var1,$var2,$var3,$var4,$var5,$var6); $ya=array(); for($i=0;$i<=count($ya);$i++) { if (in_array($array1[$i],$ya,true)) { echo $i . " : Yess<br>"; } else { array_push($ya, $array1[$i]); echo $i . " : Noo<br>"; } } echo "<br>\n"; print_r($array1); echo "<br>\n"; print_r($ya); ?> 

The output is:

0 : Noo 1 : Noo 2 : Noo 3 : Noo 4 : Yess

Array ( [0] => cat [1] => dog [2] => gepp [3] => frigor [4] => dog [5] => cat )
Array ( [0] => cat [1] => dog [2] => gepp [3] => frigor )

Not working example

In the following code values are saved from the label tag of an xml.

$array = array(); foreach($mypix->result as $pixinfo): echo " Result<br>\n "; foreach($pixinfo->row as $row): $label=$row->label; if (in_array($label,$array,true)) { echo "Yess<br>"; } else { array_push($array, $label); echo "No<br>"; } echo "[NEXT]<br>\n"; endforeach; endforeach; 

The xml's structure is as follows:

<result date="2014-05-05"> <row> <label>1.1</label> <nb_visits>4</nb_visits> </row> </result> <result date="2014-05-06"/> <result date="2014-05-08"> <row> <label>Custom Variable value not defined</label> <nb_visits>115</nb_visits> <nb_actions>261</nb_actions> </row> <row> <label>Commedia</label> <nb_visits>26</nb_visits> <nb_actions>39</nb_actions> </row> [...] </result> 

The problem is that values are inserted even if they are already present in the array. Do you guys have any advice? What's wrong with the in_array command?

Edit

Here is the output of var_dump($array);

array(441){ [0]=> object(SimpleXMLElement)#9 (1) { [0]=> string(3) "1.1" } [1]=> object(SimpleXMLElement)#8 (1) { [0]=> string(3) "1.2" } [2]=> object(SimpleXMLElement)#10 (1) { [0]=> string(3) "1.1" } [3]=> object(SimpleXMLElement)#11 (1) { [0]=> string(3) "1.1" } [4]=> object(SimpleXMLElement)#12 (1) { [0]=> string(33) "Custom Variable value not defined" }