How to Extract Text from Word, Excel, and PowerPoint Files in PHP?

How to Extract Text from Word File .doc, .docx, .xlsx, .pptx in PHP

Extracting text from uploaded Word documents is crucial for tasks like searching within documents, particularly in scenarios involving CVs/resumes. This article provides a comprehensive solution to this common problem.

Doc/Docx File Extraction

Doc/Docx files are binary blobs. For .doc files, you can use the fopen function, while for .docx files, you can utilize the zip_open function. This is because docx files are essentially ZIP files containing XML files.

Excel File Extraction

To extract text from XLSX files, we focus on a specific XML file, xl/sharedStrings.xml. We extract the content from this file and strip HTML tags for plain text.

PowerPoint File Extraction

PPTX files follow a similar approach. We iterate through slide XML files, extracting and concatenating their contents.

Class Implementation

We provide a PHP class named DocxConversion that encapsulates these extraction methods. The class accepts a file path as an argument and has the following functions:

• read_doc(): Handles .doc file extraction.
• read_docx(): Handles .docx file extraction.
• xlsx_to_text(): Handles .xlsx file extraction.
• pptx_to_text(): Handles .pptx file extraction.
• convertToText(): Chooses the appropriate extraction method based on the file extension.

Usage

To use this class, instantiate it with the file path and call the convertToText() method. The method returns the extracted text as a string.

Example:

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

This script will extract the text from the specified .docx file and display it.

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