New Class Constants

pdo:

  • PDO::ATTR_DEFAULT_FETCH_MODE
  • PDO::FETCH_PROPS_LATE
  • PDO::FETCH_KEY_PAIR Fetches a 2 column result set into an associated array. (Added in PHP 5.2.3)

spl:

  • CachingIterator::FULL_CACHE
  • CachingIterator::TOSTRING_USE_INNER
  • SplFileObject::READ_AHEAD
  • SplFileObject::READ_CSV
  • SplFileObject::SKIP_EMPTY
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备份地址：http://www.lvesu.com/blog/php/migration52.class-constants.php