<?php

/** @generate-class-entries */

/**
 * @var int
 * @cvalue PREG_PATTERN_ORDER
 */
const PREG_PATTERN_ORDER = UNKNOWN;
/**
 * @var int
 * @cvalue PREG_SET_ORDER
 */
const PREG_SET_ORDER = UNKNOWN;
/**
 * @var int
 * @cvalue PREG_OFFSET_CAPTURE
 */
const PREG_OFFSET_CAPTURE = UNKNOWN;
/**
 * @var int
 * @cvalue PREG_UNMATCHED_AS_NULL
 */
const PREG_UNMATCHED_AS_NULL = UNKNOWN;
/**
 * @var int
 * @cvalue PREG_SPLIT_NO_EMPTY
 */
const PREG_SPLIT_NO_EMPTY = UNKNOWN;
/**
 * @var int
 * @cvalue PREG_SPLIT_DELIM_CAPTURE
 */
const PREG_SPLIT_DELIM_CAPTURE = UNKNOWN;
/**
 * @var int
 * @cvalue PREG_SPLIT_OFFSET_CAPTURE
 */
const PREG_SPLIT_OFFSET_CAPTURE = UNKNOWN;
/**
 * @var int
 * @cvalue PREG_GREP_INVERT
 */
const PREG_GREP_INVERT = UNKNOWN;
/**
 * @var int
 * @cvalue PHP_PCRE_NO_ERROR
 */
const PREG_NO_ERROR = UNKNOWN;
/**
 * @var int
 * @cvalue PHP_PCRE_INTERNAL_ERROR
 */
const PREG_INTERNAL_ERROR = UNKNOWN;
/**
 * @var int
 * @cvalue PHP_PCRE_BACKTRACK_LIMIT_ERROR
 */
const PREG_BACKTRACK_LIMIT_ERROR = UNKNOWN;
/**
 * @var int
 * @cvalue PHP_PCRE_RECURSION_LIMIT_ERROR
 */
const PREG_RECURSION_LIMIT_ERROR = UNKNOWN;
/**
 * @var int
 * @cvalue PHP_PCRE_BAD_UTF8_ERROR
 */
const PREG_BAD_UTF8_ERROR = UNKNOWN;
/**
 * @var int
 * @cvalue PHP_PCRE_BAD_UTF8_OFFSET_ERROR
 */
const PREG_BAD_UTF8_OFFSET_ERROR = UNKNOWN;
/**
 * @var int
 * @cvalue PHP_PCRE_JIT_STACKLIMIT_ERROR
 */
const PREG_JIT_STACKLIMIT_ERROR = UNKNOWN;
/**
 * @var string
 * @cvalue php_pcre_version
 */
const PCRE_VERSION = UNKNOWN;
/**
 * @var int
 * @cvalue PCRE2_MAJOR
 */
const PCRE_VERSION_MAJOR = UNKNOWN;
/**
 * @var int
 * @cvalue PCRE2_MINOR
 */
const PCRE_VERSION_MINOR = UNKNOWN;
/**
 * @var bool
 * @cvalue PHP_PCRE_JIT_SUPPORT
 */
const PCRE_JIT_SUPPORT = UNKNOWN;

/** @param array $matches */
function preg_match(string $pattern, string $subject, &$matches = null, int $flags = 0, int $offset = 0): int|false {}

/** @param array $matches */
function preg_match_all(string $pattern, string $subject, &$matches = null, int $flags = 0, int $offset = 0): int|false {}

/**
 * @param int $count
 * @return string|array<int|string, string>|null
 */
function preg_replace(string|array $pattern, string|array $replacement, string|array $subject, int $limit = -1, &$count = null): string|array|null {}

/**
 * @param int $count
 * @return string|array<int|string, string>|null
 */
function preg_filter(string|array $pattern, string|array $replacement, string|array $subject, int $limit = -1, &$count = null): string|array|null {}

/**
 * @param int $count
 * @return string|array<int|string, string>|null
 */
function preg_replace_callback(string|array $pattern, callable $callback, string|array $subject, int $limit = -1, &$count = null, int $flags = 0): string|array|null {}

/** @param int $count */
function preg_replace_callback_array(array $pattern, string|array $subject, int $limit = -1, &$count = null, int $flags = 0): string|array|null {}

/**
 * @return array<int|string, string|array>|false
 * @refcount 1
 */
function preg_split(string $pattern, string $subject, int $limit = -1, int $flags = 0): array|false {}

/** @compile-time-eval */
function preg_quote(string $str, ?string $delimiter = null): string {}

/** @refcount 1 */
function preg_grep(string $pattern, array $array, int $flags = 0): array|false {}

function preg_last_error(): int {}

function preg_last_error_msg(): string {}