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Diffstat (limited to 'function/RFC822.php')
| -rw-r--r-- | function/RFC822.php | 872 |
1 files changed, 0 insertions, 872 deletions
diff --git a/function/RFC822.php b/function/RFC822.php deleted file mode 100644 index ce41f72..0000000 --- a/function/RFC822.php +++ /dev/null @@ -1,872 +0,0 @@ -<?php
-/**
-* RFC 822 Email address list validation Utility
-*
-* What is it?
-*
-* This class will take an address string, and parse it into it's consituent
-* parts, be that either addresses, groups, or combinations. Nested groups
-* are not supported. The structure it returns is pretty straight forward,
-* and is similar to that provided by the imap_rfc822_parse_adrlist(). Use
-* print_r() to view the structure.
-*
-* How do I use it?
-*
-* $address_string = 'My Group: "Richard Heyes" <richard@localhost> (A comment), ted@example.com (Ted Bloggs), Barney;';
-* $structure = Mail_RFC822::parseAddressList($address_string, 'example.com', TRUE)
-* print_r($structure);
-*
-* @author Richard Heyes <richard@phpguru.org>
-* @author Chuck Hagenbuch <chuck@horde.org>
-* @version $Revision: 1.1 $
-* @package Mail
-*/
-
-class Mail_RFC822
-{
- /**
- * The address being parsed by the RFC822 object.
- * @var string $address
- */
- var $address = '';
-
- /**
- * The default domain to use for unqualified addresses.
- * @var string $default_domain
- */
- var $default_domain = 'localhost';
-
- /**
- * Should we return a nested array showing groups, or flatten everything?
- * @var boolean $nestGroups
- */
- var $nestGroups = true;
-
- /**
- * Whether or not to validate atoms for non-ascii characters.
- * @var boolean $validate
- */
- var $validate = true;
-
- /**
- * The array of raw addresses built up as we parse.
- * @var array $addresses
- */
- var $addresses = array();
-
- /**
- * The final array of parsed address information that we build up.
- * @var array $structure
- */
- var $structure = array();
-
- /**
- * The current error message, if any.
- * @var string $error
- */
- var $error = null;
-
- /**
- * An internal counter/pointer.
- * @var integer $index
- */
- var $index = null;
-
- /**
- * The number of groups that have been found in the address list.
- * @var integer $num_groups
- * @access public
- */
- var $num_groups = 0;
-
- /**
- * A variable so that we can tell whether or not we're inside a
- * Mail_RFC822 object.
- * @var boolean $mailRFC822
- */
- var $mailRFC822 = true;
-
- /**
- * A limit after which processing stops
- * @var int $limit
- */
- var $limit = null;
-
-
- /**
- * Sets up the object. The address must either be set here or when
- * calling parseAddressList(). One or the other.
- *
- * @access public
- * @param string $address The address(es) to validate.
- * @param string $default_domain Default domain/host etc. If not supplied, will be set to localhost.
- * @param boolean $nest_groups Whether to return the structure with groups nested for easier viewing.
- * @param boolean $validate Whether to validate atoms. Turn this off if you need to run addresses through before encoding the personal names, for instance.
- *
- * @return object Mail_RFC822 A new Mail_RFC822 object.
- */
- function __construct($address = null, $default_domain = null, $nest_groups = null, $validate = null, $limit = null)
- {
- if (isset($address)) $this->address = $address;
- if (isset($default_domain)) $this->default_domain = $default_domain;
- if (isset($nest_groups)) $this->nestGroups = $nest_groups;
- if (isset($validate)) $this->validate = $validate;
- if (isset($limit)) $this->limit = $limit;
- }
-
-
- /**
- * Starts the whole process. The address must either be set here
- * or when creating the object. One or the other.
- *
- * @access public
- * @param string $address The address(es) to validate.
- * @param string $default_domain Default domain/host etc.
- * @param boolean $nest_groups Whether to return the structure with groups nested for easier viewing.
- * @param boolean $validate Whether to validate atoms. Turn this off if you need to run addresses through before encoding the personal names, for instance.
- *
- * @return array A structured array of addresses.
- */
- function parseAddressList($address = null, $default_domain = null, $nest_groups = null, $validate = null, $limit = null)
- {
-
- if (!isset($this->mailRFC822)) {
- $obj = new Mail_RFC822($address, $default_domain, $nest_groups, $validate, $limit);
- return $obj->parseAddressList();
- }
-
- if (isset($address)) $this->address = $address;
- if (isset($default_domain)) $this->default_domain = $default_domain;
- if (isset($nest_groups)) $this->nestGroups = $nest_groups;
- if (isset($validate)) $this->validate = $validate;
- if (isset($limit)) $this->limit = $limit;
-
- $this->structure = array();
- $this->addresses = array();
- $this->error = null;
- $this->index = null;
-
- while ($this->address = $this->_splitAddresses($this->address)) {
- continue;
- }
-
- if ($this->address === false || isset($this->error)) {
- return false;
- }
-
- // Reset timer since large amounts of addresses can take a long time to
- // get here
- set_time_limit(30);
-
- // Loop through all the addresses
- for ($i = 0; $i < count($this->addresses); $i++){
-
- if (($return = $this->_validateAddress($this->addresses[$i])) === false
- || isset($this->error)) {
- return false;
- }
-
- if (!$this->nestGroups) {
- $this->structure = array_merge($this->structure, $return);
- } else {
- $this->structure[] = $return;
- }
- }
-
- return $this->structure;
- }
-
- /**
- * Splits an address into seperate addresses.
- *
- * @access private
- * @param string $address The addresses to split.
- * @return boolean Success or failure.
- */
- function _splitAddresses($address)
- {
-
- if (!empty($this->limit) AND count($this->addresses) == $this->limit) {
- return '';
- }
-
- if ($this->_isGroup($address) && !isset($this->error)) {
- $split_char = ';';
- $is_group = true;
- } elseif (!isset($this->error)) {
- $split_char = ',';
- $is_group = false;
- } elseif (isset($this->error)) {
- return false;
- }
-
- // Split the string based on the above ten or so lines.
- $parts = explode($split_char, $address);
- $string = $this->_splitCheck($parts, $split_char);
-
- // If a group...
- if ($is_group) {
- // If $string does not contain a colon outside of
- // brackets/quotes etc then something's fubar.
-
- // First check there's a colon at all:
- if (strpos($string, ':') === false) {
- $this->error = 'Invalid address: ' . $string;
- return false;
- }
-
- // Now check it's outside of brackets/quotes:
- if (!$this->_splitCheck(explode(':', $string), ':'))
- return false;
-
- // We must have a group at this point, so increase the counter:
- $this->num_groups++;
- }
-
- // $string now contains the first full address/group.
- // Add to the addresses array.
- $this->addresses[] = array(
- 'address' => trim($string),
- 'group' => $is_group
- );
-
- // Remove the now stored address from the initial line, the +1
- // is to account for the explode character.
- $address = trim(substr($address, strlen($string) + 1));
-
- // If the next char is a comma and this was a group, then
- // there are more addresses, otherwise, if there are any more
- // chars, then there is another address.
- if ($is_group && substr($address, 0, 1) == ','){
- $address = trim(substr($address, 1));
- return $address;
-
- } elseif (strlen($address) > 0) {
- return $address;
-
- } else {
- return '';
- }
-
- // If you got here then something's off
- return false;
- }
-
- /**
- * Checks for a group at the start of the string.
- *
- * @access private
- * @param string $address The address to check.
- * @return boolean Whether or not there is a group at the start of the string.
- */
- function _isGroup($address)
- {
- // First comma not in quotes, angles or escaped:
- $parts = explode(',', $address);
- $string = $this->_splitCheck($parts, ',');
-
- // Now we have the first address, we can reliably check for a
- // group by searching for a colon that's not escaped or in
- // quotes or angle brackets.
- if (count($parts = explode(':', $string)) > 1) {
- $string2 = $this->_splitCheck($parts, ':');
- return ($string2 !== $string);
- } else {
- return false;
- }
- }
-
- /**
- * A common function that will check an exploded string.
- *
- * @access private
- * @param array $parts The exloded string.
- * @param string $char The char that was exploded on.
- * @return mixed False if the string contains unclosed quotes/brackets, or the string on success.
- */
- function _splitCheck($parts, $char)
- {
- $string = $parts[0];
-
- for ($i = 0; $i < count($parts); $i++) {
- if ($this->_hasUnclosedQuotes($string)
- || $this->_hasUnclosedBrackets($string, '<>')
- || $this->_hasUnclosedBrackets($string, '[]')
- || $this->_hasUnclosedBrackets($string, '()')
- || substr($string, -1) == '\\') {
- if (isset($parts[$i + 1])) {
- $string = $string . $char . $parts[$i + 1];
- } else {
- $this->error = 'Invalid address spec. Unclosed bracket or quotes';
- return false;
- }
- } else {
- $this->index = $i;
- break;
- }
- }
-
- return $string;
- }
-
- /**
- * Checks if a string has an unclosed quotes or not.
- *
- * @access private
- * @param string $string The string to check.
- * @return boolean True if there are unclosed quotes inside the string, false otherwise.
- */
- function _hasUnclosedQuotes($string)
- {
- $string = explode('"', $string);
- $string_cnt = count($string);
-
- for ($i = 0; $i < (count($string) - 1); $i++)
- if (substr($string[$i], -1) == '\\')
- $string_cnt--;
-
- return ($string_cnt % 2 === 0);
- }
-
- /**
- * Checks if a string has an unclosed brackets or not. IMPORTANT:
- * This function handles both angle brackets and square brackets;
- *
- * @access private
- * @param string $string The string to check.
- * @param string $chars The characters to check for.
- * @return boolean True if there are unclosed brackets inside the string, false otherwise.
- */
- function _hasUnclosedBrackets($string, $chars)
- {
- $num_angle_start = substr_count($string, $chars[0]);
- $num_angle_end = substr_count($string, $chars[1]);
-
- $this->_hasUnclosedBracketsSub($string, $num_angle_start, $chars[0]);
- $this->_hasUnclosedBracketsSub($string, $num_angle_end, $chars[1]);
-
- if ($num_angle_start < $num_angle_end) {
- $this->error = 'Invalid address spec. Unmatched quote or bracket (' . $chars . ')';
- return false;
- } else {
- return ($num_angle_start > $num_angle_end);
- }
- }
-
- /**
- * Sub function that is used only by hasUnclosedBrackets().
- *
- * @access private
- * @param string $string The string to check.
- * @param integer &$num The number of occurences.
- * @param string $char The character to count.
- * @return integer The number of occurences of $char in $string, adjusted for backslashes.
- */
- function _hasUnclosedBracketsSub($string, &$num, $char)
- {
- $parts = explode($char, $string);
- for ($i = 0; $i < count($parts); $i++){
- if (substr($parts[$i], -1) == '\\' || $this->_hasUnclosedQuotes($parts[$i]))
- $num--;
- if (isset($parts[$i + 1]))
- $parts[$i + 1] = $parts[$i] . $char . $parts[$i + 1];
- }
-
- return $num;
- }
-
- /**
- * Function to begin checking the address.
- *
- * @access private
- * @param string $address The address to validate.
- * @return mixed False on failure, or a structured array of address information on success.
- */
- function _validateAddress($address)
- {
- $is_group = false;
-
- if ($address['group']) {
- $is_group = true;
-
- // Get the group part of the name
- $parts = explode(':', $address['address']);
- $groupname = $this->_splitCheck($parts, ':');
- $structure = array();
-
- // And validate the group part of the name.
- if (!$this->_validatePhrase($groupname)){
- $this->error = 'Group name did not validate.';
- return false;
- } else {
- // Don't include groups if we are not nesting
- // them. This avoids returning invalid addresses.
- if ($this->nestGroups) {
- $structure = new stdClass;
- $structure->groupname = $groupname;
- }
- }
-
- $address['address'] = ltrim(substr($address['address'], strlen($groupname . ':')));
- }
-
- // If a group then split on comma and put into an array.
- // Otherwise, Just put the whole address in an array.
- if ($is_group) {
- while (strlen($address['address']) > 0) {
- $parts = explode(',', $address['address']);
- $addresses[] = $this->_splitCheck($parts, ',');
- $address['address'] = trim(substr($address['address'], strlen(end($addresses) . ',')));
- }
- } else {
- $addresses[] = $address['address'];
- }
-
- // Check that $addresses is set, if address like this:
- // Groupname:;
- // Then errors were appearing.
- if (!isset($addresses)){
- $this->error = 'Empty group.';
- return false;
- }
-
- for ($i = 0; $i < count($addresses); $i++) {
- $addresses[$i] = trim($addresses[$i]);
- }
-
- // Validate each mailbox.
- // Format could be one of: name <geezer@domain.com>
- // geezer@domain.com
- // geezer
- // ... or any other format valid by RFC 822.
- array_walk($addresses, array($this, 'validateMailbox'));
-
- // Nested format
- if ($this->nestGroups) {
- if ($is_group) {
- $structure->addresses = $addresses;
- } else {
- $structure = $addresses[0];
- }
-
- // Flat format
- } else {
- if ($is_group) {
- $structure = array_merge($structure, $addresses);
- } else {
- $structure = $addresses;
- }
- }
-
- return $structure;
- }
-
- /**
- * Function to validate a phrase.
- *
- * @access private
- * @param string $phrase The phrase to check.
- * @return boolean Success or failure.
- */
- function _validatePhrase($phrase)
- {
- // Splits on one or more Tab or space.
- $parts = preg_split('/[ \\x09]+/', $phrase, -1, PREG_SPLIT_NO_EMPTY);
-
- $phrase_parts = array();
- while (count($parts) > 0){
- $phrase_parts[] = $this->_splitCheck($parts, ' ');
- for ($i = 0; $i < $this->index + 1; $i++)
- array_shift($parts);
- }
-
- for ($i = 0; $i < count($phrase_parts); $i++) {
- // If quoted string:
- if (substr($phrase_parts[$i], 0, 1) == '"') {
- if (!$this->_validateQuotedString($phrase_parts[$i]))
- return false;
- continue;
- }
-
- // Otherwise it's an atom:
- if (!$this->_validateAtom($phrase_parts[$i])) return false;
- }
-
- return true;
- }
-
- /**
- * Function to validate an atom which from rfc822 is:
- * atom = 1*<any CHAR except specials, SPACE and CTLs>
- *
- * If validation ($this->validate) has been turned off, then
- * validateAtom() doesn't actually check anything. This is so that you
- * can split a list of addresses up before encoding personal names
- * (umlauts, etc.), for example.
- *
- * @access private
- * @param string $atom The string to check.
- * @return boolean Success or failure.
- */
- function _validateAtom($atom)
- {
- if (!$this->validate) {
- // Validation has been turned off; assume the atom is okay.
- return true;
- }
-
- // Check for any char from ASCII 0 - ASCII 127
- if (!preg_match('/^[\\x00-\\x7E]+$/i', $atom, $matches)) {
- return false;
- }
-
- // Check for specials:
- if (preg_match('/[][()<>@,;\\:". ]/', $atom)) {
- return false;
- }
-
- // Check for control characters (ASCII 0-31):
- if (preg_match('/[\\x00-\\x1F]+/', $atom)) {
- return false;
- }
-
- return true;
- }
-
- /**
- * Function to validate quoted string, which is:
- * quoted-string = <"> *(qtext/quoted-pair) <">
- *
- * @access private
- * @param string $qstring The string to check
- * @return boolean Success or failure.
- */
- function _validateQuotedString($qstring)
- {
- // Leading and trailing "
- $qstring = substr($qstring, 1, -1);
-
- // Perform check.
- return !(preg_match('/(.)[\x0D\\\\"]/', $qstring, $matches) && $matches[1] != '\\');
- }
-
- /**
- * Function to validate a mailbox, which is:
- * mailbox = addr-spec ; simple address
- * / phrase route-addr ; name and route-addr
- *
- * @access public
- * @param string &$mailbox The string to check.
- * @return boolean Success or failure.
- */
- function validateMailbox(&$mailbox)
- {
- // A couple of defaults.
- $phrase = '';
- $comment = '';
-
- // Catch any RFC822 comments and store them separately
- $_mailbox = $mailbox;
- while (strlen(trim($_mailbox)) > 0) {
- $parts = explode('(', $_mailbox);
- $before_comment = $this->_splitCheck($parts, '(');
- if ($before_comment != $_mailbox) {
- // First char should be a (
- $comment = substr(str_replace($before_comment, '', $_mailbox), 1);
- $parts = explode(')', $comment);
- $comment = $this->_splitCheck($parts, ')');
- $comments[] = $comment;
-
- // +1 is for the trailing )
- $_mailbox = substr($_mailbox, strpos($_mailbox, $comment)+strlen($comment)+1);
- } else {
- break;
- }
- }
-
- for($i=0; $i<count(@$comments); $i++){
- $mailbox = str_replace('('.$comments[$i].')', '', $mailbox);
- }
- $mailbox = trim($mailbox);
-
- // Check for name + route-addr
- if (substr($mailbox, -1) == '>' && substr($mailbox, 0, 1) != '<') {
- $parts = explode('<', $mailbox);
- $name = $this->_splitCheck($parts, '<');
-
- $phrase = trim($name);
- $route_addr = trim(substr($mailbox, strlen($name.'<'), -1));
-
- if ($this->_validatePhrase($phrase) === false || ($route_addr = $this->_validateRouteAddr($route_addr)) === false)
- return false;
-
- // Only got addr-spec
- } else {
- // First snip angle brackets if present.
- if (substr($mailbox,0,1) == '<' && substr($mailbox,-1) == '>')
- $addr_spec = substr($mailbox,1,-1);
- else
- $addr_spec = $mailbox;
-
- if (($addr_spec = $this->_validateAddrSpec($addr_spec)) === false)
- return false;
- }
-
- // Construct the object that will be returned.
- $mbox = new stdClass();
-
- // Add the phrase (even if empty) and comments
- $mbox->personal = $phrase;
- $mbox->comment = isset($comments) ? $comments : array();
-
- if (isset($route_addr)) {
- $mbox->mailbox = $route_addr['local_part'];
- $mbox->host = $route_addr['domain'];
- $route_addr['adl'] !== '' ? $mbox->adl = $route_addr['adl'] : '';
- } else {
- $mbox->mailbox = $addr_spec['local_part'];
- $mbox->host = $addr_spec['domain'];
- }
-
- $mailbox = $mbox;
- return true;
- }
-
- /**
- * This function validates a route-addr which is:
- * route-addr = "<" [route] addr-spec ">"
- *
- * Angle brackets have already been removed at the point of
- * getting to this function.
- *
- * @access private
- * @param string $route_addr The string to check.
- * @return mixed False on failure, or an array containing validated address/route information on success.
- */
- function _validateRouteAddr($route_addr)
- {
- // Check for colon.
- if (strpos($route_addr, ':') !== false) {
- $parts = explode(':', $route_addr);
- $route = $this->_splitCheck($parts, ':');
- } else {
- $route = $route_addr;
- }
-
- // If $route is same as $route_addr then the colon was in
- // quotes or brackets or, of course, non existent.
- if ($route === $route_addr){
- unset($route);
- $addr_spec = $route_addr;
- if (($addr_spec = $this->_validateAddrSpec($addr_spec)) === false) {
- return false;
- }
- } else {
- // Validate route part.
- if (($route = $this->_validateRoute($route)) === false) {
- return false;
- }
-
- $addr_spec = substr($route_addr, strlen($route . ':'));
-
- // Validate addr-spec part.
- if (($addr_spec = $this->_validateAddrSpec($addr_spec)) === false) {
- return false;
- }
- }
-
- if (isset($route)) {
- $return['adl'] = $route;
- } else {
- $return['adl'] = '';
- }
-
- $return = array_merge($return, $addr_spec);
- return $return;
- }
-
- /**
- * Function to validate a route, which is:
- * route = 1#("@" domain) ":"
- *
- * @access private
- * @param string $route The string to check.
- * @return mixed False on failure, or the validated $route on success.
- */
- function _validateRoute($route)
- {
- // Split on comma.
- $domains = explode(',', trim($route));
-
- for ($i = 0; $i < count($domains); $i++) {
- $domains[$i] = str_replace('@', '', trim($domains[$i]));
- if (!$this->_validateDomain($domains[$i])) return false;
- }
-
- return $route;
- }
-
- /**
- * Function to validate a domain, though this is not quite what
- * you expect of a strict internet domain.
- *
- * domain = sub-domain *("." sub-domain)
- *
- * @access private
- * @param string $domain The string to check.
- * @return mixed False on failure, or the validated domain on success.
- */
- function _validateDomain($domain)
- {
- // Note the different use of $subdomains and $sub_domains
- $subdomains = explode('.', $domain);
-
- while (count($subdomains) > 0) {
- $sub_domains[] = $this->_splitCheck($subdomains, '.');
- for ($i = 0; $i < $this->index + 1; $i++)
- array_shift($subdomains);
- }
-
- for ($i = 0; $i < count($sub_domains); $i++) {
- if (!$this->_validateSubdomain(trim($sub_domains[$i])))
- return false;
- }
-
- // Managed to get here, so return input.
- return $domain;
- }
-
- /**
- * Function to validate a subdomain:
- * subdomain = domain-ref / domain-literal
- *
- * @access private
- * @param string $subdomain The string to check.
- * @return boolean Success or failure.
- */
- function _validateSubdomain($subdomain)
- {
- if (preg_match('|^\[(.*)]$|', $subdomain, $arr)){
- if (!$this->_validateDliteral($arr[1])) return false;
- } else {
- if (!$this->_validateAtom($subdomain)) return false;
- }
-
- // Got here, so return successful.
- return true;
- }
-
- /**
- * Function to validate a domain literal:
- * domain-literal = "[" *(dtext / quoted-pair) "]"
- *
- * @access private
- * @param string $dliteral The string to check.
- * @return boolean Success or failure.
- */
- function _validateDliteral($dliteral)
- {
- return !preg_match('/(.)[][\x0D\\\\]/', $dliteral, $matches) && $matches[1] != '\\';
- }
-
- /**
- * Function to validate an addr-spec.
- *
- * addr-spec = local-part "@" domain
- *
- * @access private
- * @param string $addr_spec The string to check.
- * @return mixed False on failure, or the validated addr-spec on success.
- */
- function _validateAddrSpec($addr_spec)
- {
- $addr_spec = trim($addr_spec);
-
- // Split on @ sign if there is one.
- if (strpos($addr_spec, '@') !== false) {
- $parts = explode('@', $addr_spec);
- $local_part = $this->_splitCheck($parts, '@');
- $domain = substr($addr_spec, strlen($local_part . '@'));
-
- // No @ sign so assume the default domain.
- } else {
- $local_part = $addr_spec;
- $domain = $this->default_domain;
- }
-
- if (($local_part = $this->_validateLocalPart($local_part)) === false) return false;
- if (($domain = $this->_validateDomain($domain)) === false) return false;
-
- // Got here so return successful.
- return array('local_part' => $local_part, 'domain' => $domain);
- }
-
- /**
- * Function to validate the local part of an address:
- * local-part = word *("." word)
- *
- * @access private
- * @param string $local_part
- * @return mixed False on failure, or the validated local part on success.
- */
- function _validateLocalPart($local_part)
- {
- $parts = explode('.', $local_part);
-
- // Split the local_part into words.
- while (count($parts) > 0){
- $words[] = $this->_splitCheck($parts, '.');
- for ($i = 0; $i < $this->index + 1; $i++) {
- array_shift($parts);
- }
- }
-
- // Validate each word.
- for ($i = 0; $i < count($words); $i++) {
- if ($this->_validatePhrase(trim($words[$i])) === false) return false;
- }
-
- // Managed to get here, so return the input.
- return $local_part;
- }
-
- /**
- * Returns an approximate count of how many addresses are
- * in the given string. This is APPROXIMATE as it only splits
- * based on a comma which has no preceding backslash. Could be
- * useful as large amounts of addresses will end up producing
- * *large* structures when used with parseAddressList().
- *
- * @param string $data Addresses to count
- * @return int Approximate count
- */
- function approximateCount($data)
- {
- return count(preg_split('/(?<!\\\\),/', $data));
- }
-
- /**
- * This is a email validating function seperate to the rest
- * of the class. It simply validates whether an email is of
- * the common internet form: <user>@<domain>. This can be
- * sufficient for most people. Optional stricter mode can
- * be utilised which restricts mailbox characters allowed
- * to alphanumeric, full stop, hyphen and underscore.
- *
- * @param string $data Address to check
- * @param boolean $strict Optional stricter mode
- * @return mixed False if it fails, an indexed array
- * username/domain if it matches
- */
- function isValidInetAddress($data, $strict = false)
- {
- $regex = $strict ? '/^([.0-9a-z_-]+)@(([0-9a-z-]+\.)+[0-9a-z]{2,4})$/i' : '/^([*+!.&#$|\'\\%\/0-9a-z^_`{}=?~:-]+)@(([0-9a-z-]+\.)+[0-9a-z]{2,4})$/i';
- if (preg_match($regex, trim($data), $matches)) {
- return array($matches[1], $matches[2]);
- } else {
- return false;
- }
- }
-}
-
-?>
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