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 8.2% of the 19626 total user notes.
Notes | Page -------+--------------------------------------------------------- 106 | http://php.net/manual/en/ref.session.php 93 | http://php.net/manual/en/features.file-upload.php 88 | http://php.net/manual/en/reserved.variables.php 88 | http://php.net/manual/en/function.header.php 88 | http://php.net/manual/en/function.mssql-connect.php 87 | http://php.net/manual/en/function.array-search.php 87 | http://php.net/manual/en/ref.image.php 84 | http://php.net/manual/en/ref.array.php 83 | http://php.net/manual/en/function.fsockopen.php 79 | http://php.net/manual/en/function.date.php 79 | http://php.net/manual/en/function.fgetcsv.php 79 | http://php.net/manual/en/ref.curl.php 77 | http://php.net/manual/en/function.rand.php 74 | http://php.net/manual/en/function.serialize.php 72 | http://php.net/manual/en/ref.com.php 72 | http://php.net/manual/en/install.windows.php 72 | http://php.net/manual/en/function.in-array.php 72 | http://php.net/manual/en/ref.mail.php 69 | http://php.net/manual/en/function.array-unique.php 69 | http://php.net/manual/en/function.exec.php