ea5663bc00
Over the years PclZip became a maintenance problem. It's code base is old and the official project seems to have died out. ZipArchive is now more commonly available and offer an easier and more complete API. So PclZip was dropped in order to focus our efforts on what matters. Closes #18
99 lines
4.3 KiB
Markdown
99 lines
4.3 KiB
Markdown
# Frequently asked questions
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The up-to-date F.A.Q. page for PHPExcel can be found on
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<http://www.codeplex.com/PHPExcel/Wiki/View.aspx?title=FAQ&referringTitle=Requirements>.
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## There seems to be a problem with character encoding...
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It is necessary to use UTF-8 encoding for all texts in PhpSpreadsheet.
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If the script uses different encoding then you can convert those texts
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with PHP's iconv() or mb\_convert\_encoding() functions.
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## Fatal error: Allowed memory size of xxx bytes exhausted (tried to allocate yyy bytes) in zzz on line aaa
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PhpSpreadsheet holds an "in memory" representation of a spreadsheet, so
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it is susceptible to PHP's memory limitations. The memory made available
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to PHP can be increased by editing the value of the memory\_limit
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directive in your php.ini file, or by using ini\_set('memory\_limit',
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'128M') within your code (ISP permitting).
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Some Readers and Writers are faster than others, and they also use
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differing amounts of memory. You can find some indication of the
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relative performance and memory usage for the different Readers and
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Writers, over the different versions of PhpSpreadsheet, on the
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[discussion
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board](http://phpexcel.codeplex.com/Thread/View.aspx?ThreadId=234150).
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If you've already increased memory to a maximum, or can't change your
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memory limit, then [this
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discussion](http://phpexcel.codeplex.com/Thread/View.aspx?ThreadId=242712)
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on the board describes some of the methods that can be applied to reduce
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the memory usage of your scripts using PhpSpreadsheet.
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## Protection on my worksheet is not working?
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When you make use of any of the worksheet protection features (e.g. cell
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range protection, prohibiting deleting rows, ...), make sure you enable
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worksheet security. This can for example be done like this:
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``` php
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$spreadsheet->getActiveSheet()->getProtection()->setSheet(true);
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```
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## Feature X is not working with Reader\_Y / Writer\_Z
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Not all features of PhpSpreadsheet are implemented in all of the Reader
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/ Writer classes. This is mostly due to underlying libraries not
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supporting a specific feature or not having implemented a specific
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feature.
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For example autofilter is not implemented in PEAR
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Spreadsheet\_Excel\_writer, which is the base of our Xls writer.
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We are slowly building up a list of features, together with the
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different readers and writers that support them, in the [features cross
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reference](./references/features-cross-reference.md).
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## Formulas don't seem to be calculated in Excel2003 using compatibility pack?
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This is normal behaviour of the compatibility pack, Xlsx displays this
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correctly. Use \PhpOffice\PhpSpreadsheet\Writer\Xls if you really need
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calculated values, or force recalculation in Excel2003.
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## Setting column width is not 100% accurate
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Trying to set column width, I experience one problem. When I open the
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file in Excel, the actual width is 0.71 less than it should be.
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The short answer is that PhpSpreadsheet uses a measure where padding is
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included. See section: "Setting a column's width" for more details.
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## How do I use PhpSpreadsheet with my framework
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- There are some instructions for using PhpSpreadsheet with Joomla on
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the [Joomla message
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board](http://http:/forum.joomla.org/viewtopic.php?f=304&t=433060)
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- A page of advice on using [PhpSpreadsheet in the Yii
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framework](http://www.yiiframework.com/wiki/101/how-to-use-phpexcel-external-library-with-yii/)
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- [The
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Bakery](http://bakery.cakephp.org/articles/melgior/2010/01/26/simple-excel-spreadsheet-helper)
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has some helper classes for reading and writing with PhpSpreadsheet
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within CakePHP
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- Integrating [PhpSpreadsheet into Kohana
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3](http://www.flynsarmy.com/2010/07/phpexcel-module-for-kohana-3/)
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and \[Интеграция PHPExcel и Kohana
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Framework\]\[http://szpargalki.blogspot.com/2011/02/phpexcel-kohana-framework.html\]
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- Using [PhpSpreadsheet with
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TYPO3](http://typo3.org/documentation/document-library/extension-manuals/phpexcel_library/1.1.1/view/toc/0/)
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### Tutorials
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- [English PHPExcel tutorial](http://openxmldeveloper.org)
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- [French PHPExcel
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tutorial](http://g-ernaelsten.developpez.com/tutoriels/excel2007/)
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- [Russian PHPExcel Blog
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Postings](http://www.web-junior.net/sozdanie-excel-fajjlov-s-pomoshhyu-phpexcel/)
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- [A Japanese-language introduction to
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PHPExcel](http://journal.mycom.co.jp/articles/2009/03/06/phpexcel/index.html)
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