How to Extract Text from Microsoft Office Documents (.doc, .docx, .xlsx, .pptx) in PHP?

Extracting Text from Microsoft Office Documents in PHP (.doc, .docx, .xlsx, .pptx)

Introduction

Often, the need arises to extract text from Microsoft Office documents, such as Word, Excel, or PowerPoint files. This can be crucial for various purposes, such as searching for specific keywords or indexing document content. However, this task can present challenges due to the different file formats used by these applications.

Doc and Docx Files

Doc and docx files are Word document formats. Doc files are binary blobs, while docx files are essentially zip archives containing XML files. To extract text from these types of files, we can leverage the following methods:

For .doc files, we can use fopen to read the file and manipulate the binary data to retrieve the text content.

For .docx files, we can employ the zip_open function to extract the "word/document.xml" file. This XML file contains the formatted text of the document, which we can strip of tags and retrieve.

Xlsx Files

Xlsx files, used by Microsoft Excel, are also zip archives. The key file to extract text from these files is "xl/sharedStrings.xml." This XML file stores the actual text content. To access this file, we can again use zip_open, extract the file content, and remove any XML tags.

Pptx Files

Pptx files, used by Microsoft PowerPoint, also follow the zip archive format. We need to extract the "ppt/slides/slideX.xml" files, where X represents the slide number, and process the XML content to retrieve the text.

Conclusion

By combining the techniques described above and using the provided PHP class, DocxConversion, we can extract text from .doc, .docx, .xlsx, and .pptx files effectively. This capability allows for a wide range of data analysis and document handling tasks.

The above is the detailed content of How to Extract Text from Microsoft Office Documents (.doc, .docx, .xlsx, .pptx) in PHP?. For more information, please follow other related articles on the PHP Chinese website!