PHP Manual
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# New Classes

The following classes were introduced in PHP 5.2.0:

- DateTime

- DateTimeZone

- RegexIterator - extends FilterIterator; implements Iterator, Traversable, OuterIterator

  Constants:

  - `RegexIterator::ALL_MATCHES`

  - `RegexIterator::GET_MATCH`

  - `RegexIterator::MATCH`

  - `RegexIterator::REPLACE`

  - `RegexIterator::SPLIT`

  - `RegexIterator::USE_KEY`

  Properties:

  - public replacement

  Methods:

  - RegexIterator::__construct(Iterator it, string regex [, int mode [, int flags [, int preg_flags]]]) - Create an RegexIterator from another iterator and a regular expression

  - bool RegexIterator::accept() - Match (string)current() against regular expression

  - bool RegexIterator::getFlags() - Returns current operation flags

  - bool RegexIterator::getMode() - Returns current operation mode

  - bool RegexIterator::getPregFlags() - Returns current PREG flags (if in use or `NULL`)

  - bool RegexIterator::setFlags(int new_flags) - Set operation flags

  - bool RegexIterator::setMode(int new_mode) - Set new operation mode

  - bool RegexIterator::setPregFlags(int new_flags) - Set PREG flags

- RecursiveRegexIterator

  Constants:

  - `RecursiveRegexIterator::ALL_MATCHES`

  - `RecursiveRegexIterator::GET_MATCH`

  - `RecursiveRegexIterator::MATCH`

  - `RecursiveRegexIterator::REPLACE`

  - `RecursiveRegexIterator::SPLIT`

  - `RecursiveRegexIterator::USE_KEY`

  Methods:

  - RecursiveRegexIterator::__construct(RecursiveIterator it, string regex [, int mode [, int flags [, int preg_flags]]]) - Create an RecursiveRegexIterator from another recursive iterator and a regular expression

  - RecursiveRegexIterator RecursiveRegexIterator::getChildren() - Return the inner iterator's children contained in a RecursiveRegexIterator

  - bool RecursiveRegexIterator::hasChildren() - Check whether the inner iterator's current element has children

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