How to read a single file inside a zip archive with PHP

To read a single file inside a zip archive, PHP provides a simple stream wrapper syntax that allows you to access files directly without extracting the entire archive.

Syntax

The basic syntax uses the zip:// stream wrapper −

zip://path/to/archive.zip#filename_inside_zip

Example

Here's how to read a specific file from a zip archive using fopen() −

<?php
    $handle = fopen('zip://test.zip#test.txt', 'r');
    
    if ($handle) {
        $result = '';
        while (!feof($handle)) {
            $result .= fread($handle, 8192);
        }
        fclose($handle);
        echo $result;
    } else {
        echo "Failed to open file";
    }
?>

Using file_get_contents()

For simpler cases, you can use file_get_contents() directly −

<?php
    $content = file_get_contents('zip://test.zip#test.txt');
    
    if ($content !== false) {
        echo $content;
    } else {
        echo "Failed to read file from zip";
    }
?>

Key Points

• The # symbol separates the zip file path from the internal file path
• File paths inside the zip are case-sensitive
• Always check if the file handle or content is valid before processing
• The zip file must exist and be readable by PHP

Conclusion

Reading files from zip archives in PHP is straightforward using the zip:// stream wrapper. Use file_get_contents() for simple cases or fopen() for more control over the reading process.