Following are the top 20 pages of the manual, sorted by the number
of user notes contributed. These sections could use a polish, those
notes represent 8.6% of the 16453 total user notes.

Notes  |  Page
-------+---------------------------------------------------------
   94  | http://php.net/manual/en/function.header.php
   92  | http://php.net/manual/en/ref.session.php
   85  | http://php.net/manual/en/reserved.variables.php
   85  | http://php.net/manual/en/function.strtotime.php
   80  | http://php.net/manual/en/ref.image.php
   78  | http://php.net/manual/en/function.preg-match.php
   76  | http://php.net/manual/en/function.mssql-connect.php
   73  | http://php.net/manual/en/features.file-upload.php
   72  | http://php.net/manual/en/function.fsockopen.php
   71  | http://php.net/manual/en/function.readdir.php
   68  | http://php.net/manual/en/function.array-search.php
   65  | http://php.net/manual/en/function.fgetcsv.php
   65  | http://php.net/manual/en/ref.com.php
   60  | http://php.net/manual/en/function.rand.php
   59  | http://php.net/manual/en/function.exec.php
   59  | http://php.net/manual/en/function.serialize.php
   59  | http://php.net/manual/en/ref.curl.php
   59  | http://php.net/manual/en/function.in-array.php
   58  | http://php.net/manual/en/function.htmlentities.php
   58  | http://php.net/manual/en/language.variables.scope.php