duanshan3427 2016-06-05 12:26
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如何检查是否可以解压缩包含允许扩展名的数组中的某些文件

I want to check if some files are unpacked whe they are part of an allowed array of extensions. This is the extensions which are allowed to be unpacked:

$AllowedExts = array("gif", "jpeg", "jpg", "JPG", "png", "tif", "tiff", "bmp", "zip", "rar", "js", "css", "txt", "less", "pdf", "mp3"); // set allowed extensions

For unzipping, i have this code so far:

if(in_array($ext, $AllowedExts)) { // only files with allowed Exts can be extracted
                $zip->extractTo(dirname($_POST['extractfile']), $zip->getNameIndex($i)); // extract in the same folder as where the zip file is
                echo 'file(s) are unpacked'; 
                }
                else {
                echo 'file(s) could not be unpacked'; 
                }

Now i want in this loop a check if some files are unpacked and some files not.

so there must be something like:

if (all file(s) can be unpacked) {
// alle files are unpacked
}
elseif (only some files can be unpacked) {
// only some files are unpacked
}
else (no file could be unpacked) {
// no file could be unpacked
}

How do i have to create the if/else loop for this?

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1条回答 默认 最新

  • douwu5009 2016-06-05 13:09
    关注

    Suppose you have a list of all extensions of your files in an array called $arr. You could use array_reduce to check if all, some or none of your files can be extracted.

    This code should work:

    <?php
    
    $AllowedExts = array("gif", "jpeg", "jpg", "JPG", "png", "tif", "tiff", "bmp", "zip", "rar", "js", "css", "txt", "less", "pdf", "mp3"); // set allowed extensions
    
    $myExtenstions = ["zip", "rar", "js", "css", "bb", "txt2"];
    
    $some=false;
    $res = array_reduce(
        $myExtenstions,
        function($res, $a) use ($AllowedExts, &$some) {
            $allowed = in_array($a, $AllowedExts);        
            if (!$some && $allowed) $some=true;
            return $res && $allowed;
        }, true
    );
    
    if ($res) {
        var_dump("all files are unpacked");
    }else if ($some){
        var_dump("only some files are unpacked");
    }else {
        var_dump("no file could be unpacked");
    }
    
    评论

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