從mysql結果下載圖片

Question

我需要爲我的用戶提供下載所有在我的項目中顯示的圖片的機會。圖像顯示從這樣的一個MySQL查詢：

$query = mysql_query("SELECT tl.customername, tl.visitdate, tl.employeename, pz.webpath from table tl 
        inner join pictures pz on pz.visitid = tl.visitid and pz.groupid = tl.groupid 
        inner join agenti ag on ag.idh = tl.employeeid 
        WHERE tl.visitdate >= '$from' AND tl.visitdate <= '$to' 
        AND tl.employeename like '$r_employee' 
        AND tl.customerowner like '$r_customer' 
        AND tl.customername like '$r_customername' 
        AND tl.visitdate like '$r_date' 
        group by pz.webpath order by tl.customername") or die(mysql_error()); 
while($associate = mysql_fetch_assoc($query)) { 
           echo '<li> <figure> 
              <img src="../core/includes/timthumb.php?src='.$associate['webpath'].'&w=200&h=200" /> 
              <figcaption> 
               <h3>'.$associate['customername'].'</h3> 
               <h6>'.$associate['employeename'].'</h6> 
               <h6>'.$associate['visitdate'].' </h6> 
            '; 
           echo '<a class="fancybox" rel="gallery" href="'.$associate['webpath'].'" title=" '.$associate['visitdate'].'/'.$associate['customername'].'">Big picture</i></a>'; 
           echo '</figcaption> 
             </figure> 
            </li>'; 
          $zip->addFromString(pathinfo (urldecode($associate['webpath']), PATHINFO_BASENAME), urldecode($associate['webpath'])); 
          } 

我該如何添加一個下載按鈕，將所有的圖像保存爲zip在用戶計算機上？

Answer 1

大量閱讀後與凱特和穆斯塔法Torbjørn伯格的幫助下，我設法solveit.So，我的最終代碼看起來like`s這樣的：

<?php 
$files = array(); 
.... 
$query = mysql_query("SELECT tl.customername, tl.visitdate, tl.employeename, pz.webpath from table tl 
        inner join pictures pz on pz.visitid = tl.visitid and pz.groupid = tl.groupid 
        inner join agenti ag on ag.idh = tl.employeeid 
        WHERE tl.visitdate >= '$from' AND tl.visitdate <= '$to' 
        AND tl.employeename like '$r_employee' 
        AND tl.customerowner like '$r_customer' 
        AND tl.customername like '$r_customername' 
        AND tl.visitdate like '$r_date' 
        group by pz.webpath order by tl.customername") or die(mysql_error()); 
while($associate = mysql_fetch_assoc($query)) { 
           echo '<li> <figure> 
              <img src="../core/includes/timthumb.php?src='.$associate['webpath'].'&w=200&h=200" /> 
              <figcaption> 
               <h3>'.$associate['customername'].'</h3> 
               <h6>'.$associate['employeename'].'</h6> 
               <h6>'.$associate['visitdate'].' </h6> 
            '; 
           echo '<a class="fancybox" rel="gallery" href="'.$associate['webpath'].'" title=" '.$associate['visitdate'].'/'.$associate['customername'].'">Big picture</i></a>'; 
           echo '</figcaption> 
             </figure> 
            </li>'; 
     $files[] = $associate['webpath']; 
          } ; 
     $zipname = "download/".$_SESSION["user_name"]."". '-Picture-' ."".time().".zip"; //create zip name using user sesion+Picture+timestamp 
     $zip = new ZipArchive; 
     $zip->open($zipname, ZipArchive::CREATE | ZipArchive::OVERWRITE); // create zip file and overwrite if exist => if timestamp is used, no need for overwrite 
      foreach ($files as $file) { // take each picture from query and insert in zip 
       $zip->addFromString(pathinfo (urldecode($file), PATHINFO_BASENAME), file_get_contents($file)); } // all pictures will be placed in main folder using their original name 
       $zip->close(); //closing zip 
       ... 
    ?>   
// creating download link for the created zip 
<div > <a href ="<?php echo $zipname ?>" > Download pictures </a></div> 

Answer 2

您可以使用ZipArchive http://www.php.net/manual/en/class.ziparchive.php用於創建一個ZIP文件，這個比較好：

$files = array(); 
while($associate = mysql_fetch_assoc($query)) 
{ 
//....// 
$files[] = $associate['blob']; 
}; 
$zipname = 'file.zip'; 
$zip = new ZipArchive; 
$zip->open($zipname, ZipArchive::CREATE); 
foreach ($files as $file) { 
    $zip->addFile($file); 
} 
$zip->close(); 
(....) //header 

Answer 3

你只需要添加的文件的路徑，您使用的URL，也可能是讀取服務器的錯誤有用登錄以查看問題所在，但此代碼應該適用於您，您基本上遍歷結果並將picturespath列添加到您的zip歸檔文件，讓我知道如果這不起作用！

$zip->open("foo.zip", ZipArchive::CREATE); 

while($associate = mysql_fetch_assoc($query)) { 
    $zip->addFile($associate['picturespath']); 
} 

$zip->close(); 

也確保您緩存ZIP輸出好歹這樣你就可以避免重新創建大量的壓縮文件時，你可以，你至少可以做的僅僅是保存歸檔名稱作爲用戶的ID，並做所有的創作之前檢查你是否有一個與當前用戶的ID第一個壓縮，如果是的話，只是爲他們提供已創建的文件。