(PHP 5 >= 5.3.0, PECL intl >= 1.0.0)
Collator::getLocale -- collator_get_locale — Get the locale name of the collator
Object oriented style
$type
   )Procedural style
Get collector locale name.
collCollator object.
type
       You can choose between valid and actual locale (
       Locale::VALID_LOCALE and 
       Locale::ACTUAL_LOCALE,
       respectively).
      
   Real locale name from which the collation data comes. If the collator was
   instantiated from rules or an error occurred, returns
   boolean FALSE.
  
Example #1 collator_get_locale() example
<?php
$coll    = collator_create( 'en_US_California' );
$res_val = collator_get_locale( $coll, Locale::VALID_LOCALE );
$res_act = collator_get_locale( $coll, Locale::ACTUAL_LOCALE );
printf( "Valid locale name: %s\nActual locale name: %s\n",
         $res_val, $res_act );
?>
The above example will output:
Requested locale name: en_US_California Valid locale name: en_US Actual locale name: en