Bild in Zip einfügen

Klopfer

Klopfer

Mitglied
Hi zusammen,
ich hab im Netz son schönes Script gefunden, was mir ne Zip erstellt, allerdings die nicht so richtig. Er erstellt mir die Zip undfügt auch eine Datei ein, die dann so heist, wie das Bild, das ich in die Zip packen will. Allerdings ist das Bild dann nur 4 Byte groß und die Bilddaten sind auch nicht enhalten -> leeres Bild.
Wär echt super wenn mir jemand dabei helfen Könnte...
Die eigentliche Zipfunktion kommt erst in den letzten 3 Blöcken, aber ich poste sicherheitshalber mal alles.
Gruß Fabian


PHP: 
<?php 

/* 

Zip-on-the-Fly

Benutze die Funktion add_dir() und add_file() um eine zipdatei zu erstellen 
*/

class zipfile   
{   

    var $datasec = array(); // array to store compressed data 
    var $ctrl_dir = array(); // central directory    
    var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00"; //end of Central directory record 
    var $old_offset = 0; 

    function add_dir($name)    

    // adds "directory" to archive - do this before putting any files in directory! 
    // $name - name of directory... like this: "path/" 
    // ...then you can add files using add_file with names like "path/file.txt" 
    {   
        $name = str_replace("\\", "/", $name);   

        $fr = "\x50\x4b\x03\x04"; 
        $fr .= "\x0a\x00";    // ver needed to extract 
        $fr .= "\x00\x00";    // gen purpose bit flag 
        $fr .= "\x00\x00";    // compression method 
        $fr .= "\x00\x00\x00\x00"; // last mod time and date 

        $fr .= pack("V",0); // crc32 
        $fr .= pack("V",0); //compressed filesize 
        $fr .= pack("V",0); //uncompressed filesize 
        $fr .= pack("v", strlen($name) ); //length of pathname 
        $fr .= pack("v", 0 ); //extra field length 
        $fr .= $name;   
        // end of "local file header" segment 

        // no "file data" segment for path 

        // "data descriptor" segment (optional but necessary if archive is not served as file) 
        $fr .= pack("V",$crc); //crc32 
        $fr .= pack("V",$c_len); //compressed filesize 
        $fr .= pack("V",$unc_len); //uncompressed filesize 

        // add this entry to array 
        $this -> datasec[] = $fr; 

        $new_offset = strlen(implode("", $this->datasec)); 

        // ext. file attributes mirrors MS-DOS directory attr byte, detailed 
        // at http://support.microsoft.com/support/kb/articles/Q125/0/19.asp

        // now add to central record 
        $cdrec = "\x50\x4b\x01\x02"; 
        $cdrec .="\x00\x00";    // version made by 
        $cdrec .="\x0a\x00";    // version needed to extract 
        $cdrec .="\x00\x00";    // gen purpose bit flag 
        $cdrec .="\x00\x00";    // compression method 
        $cdrec .="\x00\x00\x00\x00"; // last mod time & date 
        $cdrec .= pack("V",0); // crc32 
        $cdrec .= pack("V",0); //compressed filesize 
        $cdrec .= pack("V",0); //uncompressed filesize 
        $cdrec .= pack("v", strlen($name) ); //length of filename 
        $cdrec .= pack("v", 0 ); //extra field length    
        $cdrec .= pack("v", 0 ); //file comment length 
        $cdrec .= pack("v", 0 ); //disk number start 
        $cdrec .= pack("v", 0 ); //internal file attributes 
        $ext = "\x00\x00\x10\x00"; 
        $ext = "\xff\xff\xff\xff";   
        $cdrec .= pack("V", 16 ); //external file attributes  - 'directory' bit set 

        $cdrec .= pack("V", $this -> old_offset ); //relative offset of local header 
        $this -> old_offset = $new_offset; 

        $cdrec .= $name;   
        // optional extra field, file comment goes here 
        // save to array 
        $this -> ctrl_dir[] = $cdrec;   

          
    } 


    function add_file($data, $name)    

    // adds "file" to archive    
    // $data - file contents 
    // $name - name of file in archive. Add path if your want 

    {   
        $name = str_replace("\\", "/", $name);   
        //$name = str_replace("\\", "\\\\", $name); 

        $fr = "\x50\x4b\x03\x04"; 
        $fr .= "\x14\x00";    // ver needed to extract 
        $fr .= "\x00\x00";    // gen purpose bit flag 
        $fr .= "\x08\x00";    // compression method 
        $fr .= "\x00\x00\x00\x00"; // last mod time and date 

        $unc_len = strlen($data);   
        $crc = crc32($data);   
        $zdata = gzcompress($data);   
        $zdata = substr( substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug 
        $c_len = strlen($zdata);   
        $fr .= pack("V",$crc); // crc32 
        $fr .= pack("V",$c_len); //compressed filesize 
        $fr .= pack("V",$unc_len); //uncompressed filesize 
        $fr .= pack("v", strlen($name) ); //length of filename 
        $fr .= pack("v", 0 ); //extra field length 
        $fr .= $name;   
        // end of "local file header" segment 
          
        // "file data" segment 
        $fr .= $zdata;   

        // "data descriptor" segment (optional but necessary if archive is not served as file) 
        $fr .= pack("V",$crc); //crc32 
        $fr .= pack("V",$c_len); //compressed filesize 
        $fr .= pack("V",$unc_len); //uncompressed filesize 

        // add this entry to array 
        $this -> datasec[] = $fr; 

        $new_offset = strlen(implode("", $this->datasec)); 

        // now add to central directory record 
        $cdrec = "\x50\x4b\x01\x02"; 
        $cdrec .="\x00\x00";    // version made by 
        $cdrec .="\x14\x00";    // version needed to extract 
        $cdrec .="\x00\x00";    // gen purpose bit flag 
        $cdrec .="\x08\x00";    // compression method 
        $cdrec .="\x00\x00\x00\x00"; // last mod time & date 
        $cdrec .= pack("V",$crc); // crc32 
        $cdrec .= pack("V",$c_len); //compressed filesize 
        $cdrec .= pack("V",$unc_len); //uncompressed filesize 
        $cdrec .= pack("v", strlen($name) ); //length of filename 
        $cdrec .= pack("v", 0 ); //extra field length    
        $cdrec .= pack("v", 0 ); //file comment length 
        $cdrec .= pack("v", 0 ); //disk number start 
        $cdrec .= pack("v", 0 ); //internal file attributes 
        $cdrec .= pack("V", 32 ); //external file attributes - 'archive' bit set 

        $cdrec .= pack("V", $this -> old_offset ); //relative offset of local header 
//        echo "old offset is ".$this->old_offset.", new offset is $new_offset<br>"; 
        $this -> old_offset = $new_offset; 

        $cdrec .= $name;   
        // optional extra field, file comment goes here 
        // save to central directory 
        $this -> ctrl_dir[] = $cdrec;   
    } 

    function file() { // dump out file    
        $data = implode("", $this -> datasec);   
        $ctrldir = implode("", $this -> ctrl_dir);   

        return    
            $data.   
            $ctrldir.   
            $this -> eof_ctrl_dir.   
            pack("v", sizeof($this -> ctrl_dir)).     // total # of entries "on this disk" 
            pack("v", sizeof($this -> ctrl_dir)).     // total # of entries overall 
            pack("V", strlen($ctrldir)).             // size of central dir 
            pack("V", strlen($data)).                 // offset to start of central dir 
            "\x00\x00";                             // .zip file comment length 
    } 
}   


$zipfile = new zipfile();   

 

// add the binary data stored in the string 'filedata' 
$filedata = ('$img');   //link zu der Datei die eingefügt werden soll
$zipfile -> add_file($filedata, $link);   //$lnk = Dateiname des Bildes

// the next three lines force an immediate download of the zip file: 
header("Content-type: application/octet-stream");   
header("Content-disposition: attachment; filename=skylinegtr.zip");   
echo $zipfile -> file();   


// OR instead of doing that, you can write out the file to the loca disk like this: 
$filename = "output.zip"; 
$fd = fopen ($filename, "wb"); 
$out = fwrite ($fd, $zipfile -> file()); 
fclose ($fd); 

echo $img;
?>
 
Original geschrieben von Klopfer
Code: 
// add the binary data stored in the string 'filedata'
Zum Vergrößern anklicken....

Wer lesen kann ist klar im Vorteil. BINARY DATA!
PHP: 
$img = "another_image.jpg";
$fp = fopen($img,'rb'); 
$filedata = fread($fp,filesize($img)); 
$zipfile -> add_file($filedata, $img);

header("Content-type: application/octet-stream");   
header("Content-disposition: attachment; filename=archive.zip");   
echo $zipfile -> file();

Gruesse
 
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