Handle magic_quotes on runtime and remove them from the requirements list (#1485285)

INSTALL

@@ -21,8 +21,6 @@ REQUIREMENTS
    - memory_limit (increase as suitable to support large attachments)
    - file_uploads enabled (for attachment upload features)
    - session.auto_start disabled
-   - magic_quotes_gpc disabled
-   - magic_quotes_sybase disabled
    - zend.ze1_compatibility_mode disabled
 * PHP compiled with OpenSSL to connect to IMAPS and to use the spell checker
 * A MySQL or PostgreSQL database engine or the SQLite extension for PHP

installer/welcome.html

@@ -22,7 +22,6 @@
         <li>error_reporting E_ALL &amp; ~E_NOTICE (or lower)</li>
         <li>file_uploads on (for attachment upload features)</li>
         <li>session.auto_start needs to be off</li>
-        <li>magic_quotes_gpc off</li>
       </ul>
     </li>
     <li>A MySQL or PostgreSQL database engine or the SQLite extension for PHP</li>

program/include/main.inc

@@ -420,8 +420,11 @@ function get_input_value($fname, $source, $allow_html=FALSE, $charset=NULL)
       $value = $_COOKIE[$fname];
     }
   
+  // strip single quotes if magic_quotes_sybase is enabled
+  if (ini_get('magic_quotes_sybase'))
+    $value = str_replace("''", "'", $value);
   // strip slashes if magic_quotes enabled
-  if ((bool)get_magic_quotes_gpc())
+  else if (get_magic_quotes_gpc() || get_magic_quotes_runtime())
     $value = stripslashes($value);
 
   // remove HTML tags if not allowed