压缩在php中不起作用的文件夹

我已经创建了一个脚本来上传一张照片，并将不同大小的版本放到一个文件夹中。之后，我想压缩那个文件夹。脚本正在做我想要的所有工作，除了压缩文件。没有显示错误

代码如下：

session_start();
$_SESSION['upload_time']=time();




$target_dir = 'downloads/'.$_FILES['userImage']["name"].'-'.$_SESSION['upload_time'].'/';


    if(!is_dir($target_dir)){
        mkdir($target_dir);
    }

$file4 = file_get_contents('assets/sizes.txt', true);
$data4=json_decode($file4,true);
foreach($data4 as $data){

    $data=explode('_',$data);
    $data1= preg_replace("/[^0-9]/","",$data[0]);
    $data2= preg_replace("/[^0-9]/","",$data[1]);

///uploading photo and creating its different sizes
store_uploaded_image('userImage',$data1,$data2,$data1.'x'.$data2 ,$target_dir);
}



$zip = new ZipArchive();

// open archive 
if ($zip->open('my-archive.zip', ZIPARCHIVE::CREATE) !== TRUE) {
    die ("Could not open archive");
}

// initialize an iterator
// pass it the directory to be processed
$iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($target_dir));

// iterate over the directory
// add each file found to the archive
foreach ($iterator as $key=>$value) {
    $zip->addFile(realpath($key), $key) or die ("ERROR: Could not add file: $key");
}

// close and save archive
$zip->close();
echo "Archive created successfully.";

---

请尝试此代码，对于本地系统，您可以使用此代码压缩特定文件夹

代码：-

---

希望这有帮助。

在$key value中得到了什么？您想压缩$target\u dir文件夹或动态图像。？存储图像的整个文件夹..您想压缩下载文件夹吗？不，不是下载文件夹..而是动态创建并包含图像的文件夹。

<?php

function Zip($source, $destination)
{

echo "called function";
    if (!extension_loaded('zip') || !file_exists($source)) {
        return false;
    }

    $zip = new ZipArchive();
    if (!$zip->open($destination, ZIPARCHIVE::CREATE)) {
        return false;
    }

    $source = str_replace('\\', '/', realpath($source));

    if (is_dir($source) === true)
    {
        $files = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($source), RecursiveIteratorIterator::SELF_FIRST);

        foreach ($files as $file)
        {
            $file = str_replace('\\', '/', $file);

            // Ignore "." and ".." folders
            if( in_array(substr($file, strrpos($file, '/')+1), array('.', '..')) )
                continue;

            $file = realpath($file);

            if (is_dir($file) === true)
            {
                $zip->addEmptyDir(str_replace($source . '/', '', $file . '/'));
            }
            else if (is_file($file) === true)
            {
                $zip->addFromString(str_replace($source . '/', '', $file), file_get_contents($file));
            }
        }
    }
    else if (is_file($source) === true)
    {
        $zip->addFromString(basename($source), file_get_contents($source));
    }

    return $zip->close();
}

Zip('/downloads','/my-archive.zip',true);

?>