How to Extract Text from Microsoft Office Files in PHP?

Extracting Text from Microsoft Office Files in PHP

Retrieving text from uploaded Word documents can be challenging. This article presents solutions for efficiently extracting text from different Microsoft Office file formats (.doc, .docx, .xlsx, .pptx) and storing it in a database for convenient searching.

Solution for .doc and .docx Files

Documents with file extensions .doc or .docx can be handled using the DocxConversion class. It offers two methods:

read_doc() for .doc files, which reads the file as a binary blob using fopen.

read_docx() for .docx files, which interprets them as compressed zip files containing XML files.

Solution for .xlsx Files (Excel)

For Excel files (.xlsx), the xlsx_to_text() function is employed. It opens the file as a zip archive and extracts the sharedStrings.xml file, which contains the text data.

Solution for .pptx Files (PowerPoint)

Similarly, pptx_to_text() handles PowerPoint files (.pptx). It opens the file as a zip archive and iterates through the individual slide XML files, extracting the text.

Usage

To utilize these functions, create a new instance of the DocxConversion class and call the convertToText() method. It will determine the file type and apply the appropriate text extraction method.

Example Usage:

$docObj = new DocxConversion("test.docx");
$docText = $docObj->convertToText();
echo $docText;

Advantages

This solution offers several benefits:

• Efficiently extracts text from various Office file formats.
• Stores the extracted text in a database, enabling quick searches.
• Handles both binary (.doc) and compressed (.docx) Word documents.
• Accommodates Excel and PowerPoint files as well.

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