Test a zip archive from php

corrupted.zip

this zip file is not a zip file

gistfile1.php

<?php

class MyZipArchive extends ZipArchive{
    /**
     * Check a zip archive for problems
     * @param string $filename
     * @throws CorruptedZipFileException
     */
    private function checkZip($filename){
        $filename = escapeshellarg($filename);
        $result = shell_exec('unzip -t ' . $filename);
        if(strpos($result, 'No errors detected in compressed data') !== false){
            throw new CorruptedZipFileException($result);
        }
    }
    public function open ($filename, $flags = null) {
        $this->checkZip($filename);
        return parent::open($filename, $flags);
    }
}

class CorruptedZipFileException extends Exception{}

$zip = new MyZipArchive();
$zip->open('/home/seanja/Downloads/currupted.zip');