init

lib/sd/manual/docs/faq.md

@@ -0,0 +1,60 @@
+# FAQ
+
+## Problem with finding
+
+Q: Element not found in such case: `$html->find('div[style=padding: 0px 2px;] span[class=rf]');`
+
+A: If there is blank in selectors, quote it!
+$html->find('div[style="padding: 0px 2px;"] span[class=rf]');
+
+## Problem with hosting
+
+Q: On my local server everything works fine, but when I put it on my esternal server it doesn't work.
+
+A: The "file_get_dom" function is a wrapper of "file_get_contents" function,  you must set "allow_url_fopen" as TRUE in "php.ini" to allow accessing files via HTTP or FTP. However, some hosting venders disabled PHP's "allow_url_fopen" flag for security issues... PHP provides excellent support for "curl" library to do the same job, Use curl to get the page, then call "str_get_dom" to create DOM object.
+
+Example:
+
+$curl = curl_init();
+curl_setopt($curl, CURLOPT_URL, 'http://????????');
+curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
+curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 10);
+$str = curl_exec($curl);
+curl_close($curl);
+
+$html= str_get_html($str);
+...
+
+## Behind a proxy
+
+Q: My server is behind a Proxy and i can't use file_get_contents b/c it returns a unauthorized error.
+
+A: Thanks for Shaggy to provide the solution:
+
+// Define a context for HTTP.
+$context = array
+(
+       'http' => array
+       (
+              'proxy' => 'addresseproxy:portproxy', // This needs to be the server and the port of the NTLM Authentication Proxy Server.
+              'request_fulluri' => true,
+       ),
+);
+
+$context = stream_context_create($context);
+
+$html= file_get_html('http://www.php.net', false, $context);
+...
+
+## Memory leak
+
+Q: This script is leaking memory seriously... After it finished running, it's not cleaning up dom object properly from memory..
+
+A: Due to php5 circular references memory leak, after creating DOM object, you must call $dom->clear() to free memory if call file_get_dom() more then once.
+
+Example:
+
+$html = file_get_html(...);
+// do something...
+$html->clear();
+unset($html);