* Fix broken links for events with different namespace
* Fix broken links in see tag
* Fix broken links in see tag (loadData())
* Fix broken link for var_export()
* Fix broken link for CVE
* Remove redundant markdown link wrap in see tags
* Remove see tags that refer to private properties
* Remove more see tags that refer to private properties
* Remove see tags that refer to private methods
* Remove one more redundant markdown link wrap in see tag [skip ci]
* Fix typo in see tag (causes broken link)
* Remove more see tags that refer to private methods
- Remove header from secure headers
- Regexp and return null fix
- Fix tests, fix in array case sensitivity, rx duplicated group name
- Simplify code
- Add phpdoc
Co-Authored-By: Alexander Makarov <sam@rmcreative.ru>
* Updated php.net link for some MemCache properties [skip ci]
* Changed protocol to https for links to php.net in comments
* Changed protocol to https for links to php.net in code
* Changed www.php.net (http) to secure.php.net (https) in comments
* Changed www.php.net (http) to secure.php.net (https) in code
* Changed protocol to https for links to php.net in UPGRADE.md
* Changed protocol to https for links to pecl.php.net in comments
* Changed us.php.net to secure.php.net (https) in comments
* Changed protocol to https for links to php.net in docs
* Changed www.php.net (http) to secure.php.net (https) in docs
* Changed protocol to https for links to pecl.php.net in docs
* Changed ru/jp.php.net to secure.php.net (https) in docs
Don't sure about russian guide: is this links meant to be for guide on russian, or not?
>The Origin request header indicates where a fetch originates from. It doesn't include any path information, but only the server name. It is sent with CORS requests, as well as with POST requests. It is similar to the Referer header, but, unlike this header, it doesn't disclose the whole path.
From https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Origin
Working code samples
```php
<?php
// We'll be granting access to only the arunranga.com domain
// which we think is safe to access this resource as application/xml
if($_SERVER['HTTP_ORIGIN'] == "http://arunranga.com") {
header('Access-Control-Allow-Origin: http://arunranga.com');
header('Content-type: application/xml');
readfile('arunerDotNetResource.xml');
} else {
header('Content-Type: text/html');
echo "<html>";
echo "<head>";
echo " <title>Another Resource</title>";
echo "</head>";
echo "<body>",
"<p>This resource behaves two-fold:";
echo "<ul>",
"<li>If accessed from <code>http://arunranga.com</code> it returns an XML document</li>";
echo "<li>If accessed from any other origin including from simply typing in the URL into the browser's address bar,";
echo "you get this HTML document</li>",
"</ul>",
"</body>",
"</html>";
}
?>
```
See https://developer.mozilla.org/en-US/docs/Web/HTTP/Server-Side_Access_Control for more info.
close#13835
