Setting a long Array . Missing data - php

Question

I check every variable, but each one is echoing a verified result, so the problem is in the array. When I try to echo the full list of 56 values, I just get 11.
All variables are SET before, and i check for example if i echo $uno, i get a value of 12.. so why isnt that value on the array.
Here is my code..
$items = array(
$uno => "item1",
$dos => "item2",
$tres => "item3",
$cuatro => "item4",
$cinco => "item5",
$seis => "item6",
$siete => "item7",
$ocho => "item8",
$nueve => "item9",
$diez => "item10",
$once => "item11",
$doce => "item12",
$trece => "item13",
$catorce => "item14",
$quince => "item15",
$dieciseis => "item16",
$diecisiete => "item17",
$dieciocho => "item18",
$diecinueve => "item19",
$veinte => "item20",
$veintiuno => "item21",
$veintidos => "item22",
$veintitres => "item23",
$veinticuatro => "item24",
$veinticinco => "item25",
$veintiseis => "item26",
$veintisiete => "item27",
$veintiocho => "item28",
$veintinueve => "item29",
$treinta => "item30",
$treintayuno => "item31",
$treintaydos => "item32",
$treintaytres => "item33",
$treintaycuatro => "item34",
$treintaycinco => "item35",
$treintayseis => "item36",
$treintaysiete => "item37",
$treintayocho => "item38",
$treintaynueve => "item39",
$cuarenta => "item40",
$cuarentayuno => "item41",
$cuarentaydos => "item42",
$cuarentaytres => "item43",
$cuarentaycuatro => "item44",
$cuarentaycinco => "item45",
$cuarentayseis => "item46",
$cuarentaysiete => "item47",
$cuarentayocho => "item48",
$cuarentaynueve => "item49",
$cincuenta => "item50",
$cincuentayuno => "item51",
$cincuentaydos => "item52",
$cincuentaytres => "item53",
$cincuentaycuatro => "item54",
$cincuentaycinco => "item55",
$cincuentayseis => "item56",
);
The PHP CODE
<?PHP
echo "<strong>Original</strong><br />";
foreach($items as $k => $v){
echo $k . " = " . $v . "<br />";
}
asort($items);
echo "<strong>Ascending Sort</strong><br />";
foreach($items as $k => $v){
echo $k . " = " . $v . "<br />";
}
arsort($items);
echo "<strong>Descending Sort</strong><br />";
foreach($items as $k => $v){
echo $k . " = " . $v . "<br />";
}
?>
I get this as output..
Original
11 = item30
5 = item35
12 = item20
8 = item42
7 = item45
4 = item44
6 = item47
9 = item41
10 = item37
2 = item46
0 = item56
Ascending Sort
12 = item20
11 = item30
5 = item35
10 = item37
9 = item41
8 = item42
4 = item44
7 = item45
2 = item46
6 = item47
0 = item56
Descending Sort
0 = item56
6 = item47
2 = item46
7 = item45
4 = item44
8 = item42
9 = item41
10 = item37
5 = item35
11 = item30
12 = item20

Answer 1

Array keys must be unique. So, use itemNN for it.
$items = array(
"item1" => $uno,
"item2" => $dos,
"item3" => $tres,
...
Or even do not use string for keys
$items = array(
1 => $uno,
2 => $dos,
3 => $tres,
...
Or even like this
$items = array(
1 => $uno,
$dos,
$tres,
...