* The port number. *

* If provided, holds the system level error number that occurred in the * system-level connect() call. *

* If the value returned in errno is * 0 and the function returned false, it is an * indication that the error occurred before the * connect() call. This is most likely due to a * problem initializing the socket. *

* The error message as a string. *

* The connection timeout, in seconds. *

* If you need to set a timeout for reading/writing data over the * socket, use stream_set_timeout, as the * timeout parameter to * fsockopen only applies while connecting the * socket. *

* The format string consists of format codes * followed by an optional repeater argument. The repeater argument can * be either an integer value or * for repeating to * the end of the input data. For a, A, h, H the repeat count specifies * how many characters of one data argument are taken, for @ it is the * absolute position where to put the next data, for everything else the * repeat count specifies how many data arguments are consumed and packed * into the resulting binary string. *

* Currently implemented formats are: * * pack format characters * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

Code	Description
a	NUL-padded string
A	SPACE-padded string
h	Hex string, low nibble first
H	Hex string, high nibble first
c	signed char
C	unsigned char
s	signed short (always 16 bit, machine byte order)
S	unsigned short (always 16 bit, machine byte order)
n	unsigned short (always 16 bit, big endian byte order)
v	unsigned short (always 16 bit, little endian byte order)
i	signed integer (machine dependent size and byte order)
I	unsigned integer (machine dependent size and byte order)
l	signed long (always 32 bit, machine byte order)
L	unsigned long (always 32 bit, machine byte order)
N	unsigned long (always 32 bit, big endian byte order)
V	unsigned long (always 32 bit, little endian byte order)
f	float (machine dependent size and representation, both little and big endian)
d	double (machine dependent size and representation, both little and big endian)
x	NUL byte
X	Back up one byte
@	NUL-fill to absolute position

*

*

* See pack for an explanation of the format codes. *

* The packed data. *

* The User Agent to be analyzed. By default, the value of HTTP * User-Agent header is used; however, you can alter this (i.e., look up * another browser's info) by passing this parameter. *

* You can bypass this parameter with a null value. *

* If set to true, this function will return an array * instead of an object. *

* The cookies value simply means that the browser * itself is capable of accepting cookies and does not mean the user has * enabled the browser to accept cookies or not. The only way to test if * cookies are accepted is to set one with setcookie, * reload, and check for the value. */ #[Pure(true)] function get_browser(?string $user_agent, bool $return_array = false): object|array|false {} /** * One-way string encryption (hashing) * @link https://php.net/manual/en/function.crypt.php * @param string $string

* The string to be encrypted. *

* An optional salt string to base the encryption on. If not provided, * one will be randomly generated by PHP each time you call this function. * PHP 5.6 or later raise E_NOTICE error if this parameter is omitted *

* If you are using the supplied salt, you should be aware that the salt * is generated once. If you are calling this function repeatedly, this * may impact both appearance and security. *

* The string to be encrypted. *

* An optional salt string to base the encryption on. If not provided, * one will be randomly generated by PHP each time you call this function. * PHP 5.6 or later raise E_NOTICE error if this parameter is omitted *

* If you are using the supplied salt, you should be aware that the salt * is generated once. If you are calling this function repeatedly, this * may impact both appearance and security. *

* The directory path that is to be opened *

* For a description of the context parameter, * refer to the streams section of * the manual. *

* If path is not a valid directory or the * directory can not be opened due to permission restrictions or * filesystem errors, opendir returns false and * generates a PHP error of level * E_WARNING. You can suppress the error output of * opendir by prepending * '@' to the * front of the function name. */ function opendir(string $directory, $context) {} /** * Close directory handle * @link https://php.net/manual/en/function.closedir.php * @param resource $dir_handle [optional]

* The directory handle resource previously opened * with opendir. If the directory handle is * not specified, the last link opened by opendir * is assumed. *

* The new current directory *

* The new directory *

* the current working directory on success, or false on * failure.
*
* On some Unix variants, getcwd will return * false if any one of the parent directories does not have the * readable or search mode set, even if the current directory * does. See chmod for more information on * modes and permissions. *

* The directory handle resource previously opened * with opendir. If the directory handle is * not specified, the last link opened by opendir * is assumed. *

* The directory handle resource previously opened * with opendir. If the directory handle is * not specified, the last link opened by opendir * is assumed. *

* Directory to open *

* The directory that will be scanned. *

* By default, the sorted order is alphabetical in ascending order. If * the optional sorting_order is set to non-zero, * then the sort order is alphabetical in descending order. *

* For a description of the context parameter, * refer to the streams section of * the manual. *

* The pattern. No tilde expansion or parameter substitution is done. *

* Valid flags: * GLOB_MARK - Adds a slash to each directory returned * GLOB_NOSORT - Return files as they appear in the directory (no sorting). When this flag is not used, the pathnames are sorted alphabetically * GLOB_NOCHECK - Return the search pattern if no files matching it were found * GLOB_NOESCAPE - Backslashes do not quote metacharacters * GLOB_BRACE - Expands {a,b,c} to match 'a', 'b', or 'c' * GLOB_ONLYDIR - Return only directory entries which match the pattern * GLOB_ERR - Stop on read errors (like unreadable directories), by default errors are ignored. * @return array|false an array containing the matched files/directories, an empty array * if no file matched or false on error. *

* On some systems it is impossible to distinguish between empty match and an * error.

* Path to the file. *

* Path to the file. *

* Path to the file. *

* Path to the file. *

* Path to the file. *

* Path to the file. *

* Path to the file. *

* Path to the file. *

* Path to the file. *

* Returns false if an error occurs. filetype will also * produce an E_NOTICE message if the stat call fails * or if the file type is unknown. */ #[Pure(true)] function filetype(string $filename): string|false {} /** * Checks whether a file or directory exists * @link https://php.net/manual/en/function.file-exists.php * @param string $filename

* Path to the file or directory. *

* On windows, use //computername/share/filename or * \\computername\share\filename to check files on * network shares. *

* This function will return false for symlinks pointing to non-existing * files. *

* This function returns false for files inaccessible due to safe mode restrictions. However these * files still can be included if * they are located in safe_mode_include_dir. *

* The check is done using the real UID/GID instead of the effective one. */ #[Pure(true)] function file_exists(string $filename): bool {} /** * Tells whether the filename is writable * @link https://php.net/manual/en/function.is-writable.php * @param string $filename

* The filename being checked. *

* The filename being checked. *

* Path to the file or directory. *

* Path to the file. *

* Path to the file. *

* Path to the file. If filename is a relative * filename, it will be checked relative to the current working * directory. If filename is a symbolic or hard link * then the link will be resolved and checked. *

* Path to the file. *

* Path to the file. *

* ** Only valid on systems supporting the st_blksize type - other * systems (e.g. Windows) return -1. *

* In case of error, stat returns false. */ #[Pure(true)] #[ArrayShape([ "dev" => "int", "ino" => "int", "mode" => "int", "nlink" => "int", "uid" => "int", "gid" => "int", "rdev" => "int", "size" => "int", "atime" => "int", "mtime" => "int", "ctime" => "int", "blksize" => "int", "blocks" => "int" ])] function stat(string $filename): array|false {} /** * Gives information about a file or symbolic link * @link https://php.net/manual/en/function.lstat.php * @see stat * @param string $filename

* Path to a file or a symbolic link. *

* Path to the file. *

* A user name or number. *

* Path to the file. *

* A group name or number. *

* Path to the file. *

* User name or number. *

* Path to the symlink. *

* The group specified by name or number. *

* Path to the file. *

* Note that mode is not automatically * assumed to be an octal value, so strings (such as "g+w") will * not work properly. To ensure the expected operation, * you need to prefix mode with a zero (0): *

 * 
 * 

* The mode parameter consists of three octal * number components specifying access restrictions for the owner, * the user group in which the owner is in, and to everybody else in * this order. One component can be computed by adding up the needed * permissions for that target user base. Number 1 means that you * grant execute rights, number 2 means that you make the file * writeable, number 4 means that you make the file readable. Add * up these numbers to specify needed rights. You can also read more * about modes on Unix systems with 'man 1 chmod' * and 'man 2 chmod'. *

* The name of the file being touched. *

* The touch time. If time is not supplied, * the current system time is used. *

* If present, the access time of the given filename is set to * the value of atime. Otherwise, it is set to * time. *

* Whenever to clear realpath cache or not. *

* Clear realpath cache on a specific filename, only used if * clear_realpath_cache is true. *

* A directory of the filesystem or disk partition. *

* A directory of the filesystem or disk partition. *

* Given a file name instead of a directory, the behaviour of the * function is unspecified and may differ between operating systems and * PHP versions. *

* Receiver, or receivers of the mail. *

* The formatting of this string must comply with * RFC 2822. Some examples are: * user@example.com * user@example.com, anotheruser@example.com * User <user@example.com> * User <user@example.com>, Another User <anotheruser@example.com> *

* Subject of the email to be sent. *

* Subject must satisfy RFC 2047. *

* Message to be sent. *

* Each line should be separated with a LF (\n). Lines should not be larger * than 70 characters. *

* Caution * (Windows only) When PHP is talking to a SMTP server directly, if a full * stop is found on the start of a line, it is removed. To counter-act this, * replace these occurrences with a double dot. *

 * 
 * 

* String or array to be inserted at the end of the email header.
* Since 7.2.0 accepts an array. Its keys are the header names and its values are the respective header values. *

* This is typically used to add extra headers (From, Cc, and Bcc). * Multiple extra headers should be separated with a CRLF (\r\n). *

* When sending mail, the mail must contain * a From header. This can be set with the * additional_headers parameter, or a default * can be set in "php.ini". *

* Failing to do this will result in an error * message similar to Warning: mail(): "sendmail_from" not * set in php.ini or custom "From:" header missing. * The From header sets also * Return-Path under Windows. *

* If messages are not received, try using a LF (\n) only. * Some poor quality Unix mail transfer agents replace LF by CRLF * automatically (which leads to doubling CR if CRLF is used). * This should be a last resort, as it does not comply with * RFC 2822. *

* The additional_parameters parameter * can be used to pass additional flags as command line options to the * program configured to be used when sending mail, as defined by the * sendmail_path configuration setting. For example, * this can be used to set the envelope sender address when using * sendmail with the -f sendmail option. *

* The user that the webserver runs as should be added as a trusted user to the * sendmail configuration to prevent a 'X-Warning' header from being added * to the message when the envelope sender (-f) is set using this method. * For sendmail users, this file is /etc/mail/trusted-users. *

* It is important to note that just because the mail was accepted for delivery, * it does NOT mean the mail will actually reach the intended destination. *

* The email address that's being hashed. *

* The string ident is added to each message. *

* The option argument is used to indicate * what logging options will be used when generating a log message. * * openlog Options * * * * * * * * * * * * * * * * * * * * * * * * *

Constant	Description
LOG_CONS	* if there is an error while sending data to the system logger, * write directly to the system console *
LOG_NDELAY	* open the connection to the logger immediately *
LOG_ODELAY	* (default) delay opening the connection until the first * message is logged *
LOG_PERROR	print log message also to standard error
LOG_PID	include PID with each message

* You can use one or more of this options. When using multiple options * you need to OR them, i.e. to open the connection * immediately, write to the console and include the PID in each message, * you will use: LOG_CONS | LOG_NDELAY | LOG_PID *

* The facility argument is used to specify what * type of program is logging the message. This allows you to specify * (in your machine's syslog configuration) how messages coming from * different facilities will be handled. * * openlog Facilities * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

Constant	Description
LOG_AUTH	* security/authorization messages (use * LOG_AUTHPRIV instead * in systems where that constant is defined) *
LOG_AUTHPRIV	security/authorization messages (private)
LOG_CRON	clock daemon (cron and at)
LOG_DAEMON	other system daemons
LOG_KERN	kernel messages
LOG_LOCAL0 ... LOG_LOCAL7	reserved for local use, these are not available in Windows
LOG_LPR	line printer subsystem
LOG_MAIL	mail subsystem
LOG_NEWS	USENET news subsystem
LOG_SYSLOG	messages generated internally by syslogd
LOG_USER	generic user-level messages
LOG_UUCP	UUCP subsystem

*

* LOG_USER is the only valid log type under Windows * operating systems *