# The RegexIterator class

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

## 简介

This iterator can be used to filter another iterator based on a regular expression.

## 类摘要

class RegexIterator extends FilterIterator {
/* 常量 */
public const int USE_KEY;
public const int INVERT_MATCH;
public const int MATCH;
public const int GET_MATCH;
public const int ALL_MATCHES;
public const int SPLIT;
public const int REPLACE;
/* 属性 */
public ?string $replacement = null;
/* 方法 */
public function __construct(
Iterator `$iterator`,
string `$pattern`,
int `$mode` = `RegexIterator::MATCH`,
int `$flags` = 0,
int `$pregFlags` = 0
)
public function accept(): bool
public function getFlags(): int
public function getMode(): int
public function getPregFlags(): int
public function getRegex(): string
public function setFlags(int `$flags`): void
public function setMode(int `$mode`): void
public function setPregFlags(int `$pregFlags`): void
/* 继承的方法 */
public function FilterIterator::accept(): bool
public function FilterIterator::current(): mixed
public function FilterIterator::key(): mixed
public function FilterIterator::next(): void
public function FilterIterator::rewind(): void
public function FilterIterator::valid(): bool
public function IteratorIterator::current(): mixed
public function IteratorIterator::getInnerIterator(): ?Iterator
public function IteratorIterator::key(): mixed
public function IteratorIterator::next(): void
public function IteratorIterator::rewind(): void
public function IteratorIterator::valid(): bool
}

## 预定义常量

## RegexIterator operation modes

`RegexIterator::ALL_MATCHES`

  Return all matches for the current entry (see preg_match_all()).

`RegexIterator::GET_MATCH`

  Return the first match for the current entry (see preg_match()).

`RegexIterator::MATCH`

  Only execute match (filter) for the current entry (see preg_match()).

`RegexIterator::REPLACE`

  Replace the current entry (see preg_replace(); Not fully implemented yet)

`RegexIterator::SPLIT`

  Returns the split values for the current entry (see preg_split()).

## RegexIterator Flags

`RegexIterator::USE_KEY`

  Special flag: Match the entry key instead of the entry value.

`RegexIterator::INVERT_MATCH`

  Inverts the return value of RegexIterator::accept().

## 属性

replacement

## 目录

- RegexIterator::accept — Get accept status
- RegexIterator::__construct — Create a new RegexIterator
- RegexIterator::getFlags — Get flags
- RegexIterator::getMode — Returns operation mode
- RegexIterator::getPregFlags — Returns the regular expression flags
- RegexIterator::getRegex — Returns current regular expression
- RegexIterator::setFlags — Sets the flags
- RegexIterator::setMode — Sets the operation mode
- RegexIterator::setPregFlags — Sets the regular expression flags

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