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 8.8% of the 15416 total user notes.

Notes  |  Page
-------+---------------------------------------------------------
   84  | http://php.net/manual/en/ref.session.php
   83  | http://php.net/manual/en/ref.xml.php
   79  | http://php.net/manual/en/function.header.php
   75  | http://php.net/manual/en/function.strtotime.php
   75  | http://php.net/manual/en/reserved.variables.php
   74  | http://php.net/manual/en/ref.image.php
   70  | http://php.net/manual/en/function.preg-match.php
   69  | http://php.net/manual/en/function.fsockopen.php
   68  | http://php.net/manual/en/function.mktime.php
   67  | http://php.net/manual/en/features.file-upload.php
   66  | http://php.net/manual/en/function.mssql-connect.php
   65  | http://php.net/manual/en/function.readdir.php
   64  | http://php.net/manual/en/ref.com.php
   62  | http://php.net/manual/en/function.in-array.php
   61  | http://php.net/manual/en/function.array-search.php
   59  | http://php.net/manual/en/function.substr.php
   59  | http://php.net/manual/en/function.serialize.php
   58  | http://php.net/manual/en/function.fgetcsv.php
   58  | http://php.net/manual/en/ref.exec.php
   58  | http://php.net/manual/en/function.explode.php