PHP core_collator::collator方法代码示例

 /**
  * Ensures that a collator is available and created
  *
  * @return bool Returns true if collation is available and ready
  */
 protected static function ensure_collator_available()
 {
     $locale = get_string('locale', 'langconfig');
     if (is_null(self::$collator) || $locale != self::$locale) {
         self::$collator = false;
         self::$locale = $locale;
         if (class_exists('Collator', false)) {
             $collator = new Collator($locale);
             if (!empty($collator) && $collator instanceof Collator) {
                 // Check for non fatal error messages. This has to be done immediately
                 // after instantiation as any further calls to collation will cause
                 // it to reset to 0 again (or another error code if one occurred)
                 $errorcode = $collator->getErrorCode();
                 $errormessage = $collator->getErrorMessage();
                 // Check for an error code, 0 means no error occurred
                 if ($errorcode !== 0) {
                     // Get the actual locale being used, e.g. en, he, zh
                     $localeinuse = $collator->getLocale(Locale::ACTUAL_LOCALE);
                     // Check for the common fallback warning error codes. If this occurred
                     // there is normally little to worry about:
                     // - U_USING_DEFAULT_WARNING (127)  - default fallback locale used (pt => UCA)
                     // - U_USING_FALLBACK_WARNING (128) - fallback locale used (de_CH => de)
                     // (UCA: Unicode Collation Algorithm http://unicode.org/reports/tr10/)
                     if ($errorcode === -127 || $errorcode === -128) {
                         // Check if the locale in use is UCA default one ('root') or
                         // if it is anything like the locale we asked for
                         if ($localeinuse !== 'root' && strpos($locale, $localeinuse) !== 0) {
                             // The locale we asked for is completely different to the locale
                             // we have received, let the user know via debugging
                             debugging('Invalid locale: "' . $locale . '", with warning (not fatal) "' . $errormessage . '", falling back to "' . $collator->getLocale(Locale::VALID_LOCALE) . '"');
                         } else {
                             // Nothing to do here, this is expected!
                             // The Moodle locale setting isn't what the collator expected but
                             // it is smart enough to match the first characters of our locale
                             // to find the correct locale or to use UCA collation
                         }
                     } else {
                         // We've received some other sort of non fatal warning - let the
                         // user know about it via debugging.
                         debugging('Problem with locale: "' . $locale . '", with message "' . $errormessage . '", falling back to "' . $collator->getLocale(Locale::VALID_LOCALE) . '"');
                     }
                 }
                 // Store the collator object now that we can be sure it is in a workable condition
                 self::$collator = $collator;
             } else {
                 // Fatal error while trying to instantiate the collator... something went wrong
                 debugging('Error instantiating collator for locale: "' . $locale . '", with error [' . intl_get_error_code() . '] ' . intl_get_error_message($collator));
             }
         }
     }
     return self::$collator instanceof Collator;
 }

 /**
  * Ensures that a collator is available and created
  *
  * @return bool Returns true if collation is available and ready
  */
 protected static function ensure_collator_available()
 {
     $locale = get_string('locale', 'langconfig');
     if (is_null(self::$collator) || $locale != self::$locale) {
         self::$collator = false;
         self::$locale = $locale;
         if (class_exists('Collator', false)) {
             $collator = new Collator($locale);
             if (!empty($collator) && $collator instanceof Collator) {
                 // Check for non fatal error messages. This has to be done immediately
                 // after instantiation as any further calls to collation will cause
                 // it to reset to 0 again (or another error code if one occurred)
                 $errorcode = $collator->getErrorCode();
                 $errormessage = $collator->getErrorMessage();
                 // Check for an error code, 0 means no error occurred
                 if ($errorcode !== 0) {
                     // Get the actual locale being used, e.g. en, he, zh
                     $localeinuse = $collator->getLocale(Locale::ACTUAL_LOCALE);
                     // Check for the common fallback warning error codes. If any of the two
                     // following errors occurred, there is normally little to worry about:
                     // * U_USING_FALLBACK_WARNING (-128) indicates that a fall back locale was
                     //   used. For example, 'de_CH' was requested, but nothing was found
                     //   there, so 'de' was used.
                     // * U_USING_DEFAULT_WARNING (-127) indicates that the default locale
                     //   data was used; neither the requested locale nor any of its fall
                     //   back locales could be found. For example, 'pt' was requested, but
                     //   UCA was used (Unicode Collation Algorithm http://unicode.org/reports/tr10/).
                     // See http://www.icu-project.org/apiref/icu4c/classicu_1_1ResourceBundle.html
                     if ($errorcode === -127 || $errorcode === -128) {
                         // Check if the locale in use is UCA default one ('root') or
                         // if it is anything like the locale we asked for
                         if ($localeinuse !== 'root' && strpos($locale, $localeinuse) !== 0) {
                             // The locale we asked for is completely different to the locale
                             // we have received, let the user know via debugging
                             debugging('Locale warning (not fatal) ' . $errormessage . ': ' . 'Requested locale "' . $locale . '" not found, locale "' . $localeinuse . '" used instead. ' . 'The most specific locale supported by ICU relatively to the requested locale is "' . $collator->getLocale(Locale::VALID_LOCALE) . '".');
                         } else {
                             // Nothing to do here, this is expected!
                             // The Moodle locale setting isn't what the collator expected but
                             // it is smart enough to match the first characters of our locale
                             // to find the correct locale or to use UCA collation
                         }
                     } else {
                         // We've received some other sort of non fatal warning - let the
                         // user know about it via debugging.
                         debugging('Problem with locale: ' . $errormessage . '. ' . 'Requested locale: "' . $locale . '", actual locale "' . $localeinuse . '". ' . 'The most specific locale supported by ICU relatively to the requested locale is "' . $collator->getLocale(Locale::VALID_LOCALE) . '".');
                     }
                 }
                 // Store the collator object now that we can be sure it is in a workable condition
                 self::$collator = $collator;
             } else {
                 // Fatal error while trying to instantiate the collator... something went wrong
                 debugging('Error instantiating collator for locale: "' . $locale . '", with error [' . intl_get_error_code() . '] ' . intl_get_error_message($collator));
             }
         }
     }
     return self::$collator instanceof Collator;
 }