Description:
------------
hi, just a "cosmetic problem"

probably are affected variants and privates too

bad result:

<?php
$arr = array(
    'language'=>'en' ,
    'script'  =>'Hans' ,
    'region'  =>'CN'
    'extlang' => array('a','b','c','d','e','f')
);
echo locale_compose( $arr );
?>

good result:

<?php
$arr = array(
    'language'=>'en' ,
    'script'  =>'Hans' ,
    'region'  =>'CN'
    'extlang0' => 'a',
    'extlang1' => 'b',
    'extlang2' => 'c',
    'extlang3' => 'd'
);
echo locale_compose( $arr );
?>