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- # PHPExcel Developer Documentation
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- ## Creating a spreadsheet
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- ### The PHPExcel class
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- The PHPExcel class is the core of PHPExcel. It contains references to the contained worksheets, document security settings and document meta data.
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- To simplify the PHPExcel concept: the PHPExcel class represents your workbook.
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- Typically, you will create a workbook in one of two ways, either by loading it from a spreadsheet file, or creating it manually. A third option, though less commonly used, is cloning an existing workbook that has been created using one of the previous two methods.
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- #### Loading a Workbook from a file
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- Details of the different spreadsheet formats supported, and the options available to read them into a PHPExcel object are described fully in the PHPExcel User Documentation - Reading Spreadsheet Files document.
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- ```php
- $inputFileName = './sampleData/example1.xls';
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- /** Load $inputFileName to a PHPExcel Object **/
- $objPHPExcel = PHPExcel_IOFactory::load($inputFileName);
- ```
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- #### Creating a new workbook
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- If you want to create a new workbook, rather than load one from file, then you simply need to instantiate it as a new PHPExcel object.
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- ```php
- /** Create a new PHPExcel Object **/
- $objPHPExcel = new PHPExcel();
- ```
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- A new workbook will always be created with a single worksheet.
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