Master PHP’s zip_read(): Read ZIP Entries Efficiently

zip_read()

is a PHP function that reads the next entry from an opened ZIP archive and returns its details.

Syntax

zip_read(resource $zip)

The $zip parameter is a ZIP file resource returned by zip_open(). zip_read() returns a resource containing entry details or false when no more entries are available.

Usage Steps

Open the ZIP file

$zip = zip_open('path/to/zipfile.zip');

Check if the ZIP file opened successfully

if ($zip) {
    // continue processing
} else {
    // handle error
}

Loop through entries

while ($zip_entry = zip_read($zip)) {
    // process each entry
}

Close the ZIP file

zip_close($zip);

Inside the loop, each call to zip_read() returns the next entry, stored in $zip_entry. Use zip_entry_name() to get the entry name, zip_entry_filesize() for its size, etc.

Example: read all entries and output their names and sizes.

$zip = zip_open('path/to/zipfile.zip');
if ($zip) {
    while ($zip_entry = zip_read($zip)) {
        $name = zip_entry_name($zip_entry);
        $size = zip_entry_filesize($zip_entry);
        echo "Name: $name, Size: $size bytes
";
    }
    zip_close($zip);
} else {
    echo "Failed to open ZIP file
";
}

Note that zip_read() only reads entry metadata; it does not extract files. To extract, use functions such as zip_entry_open() and zip_entry_read().

In summary, zip_read() is a useful PHP function for retrieving information about ZIP entries, facilitating further processing.