2011-01-25 57 views
1

我有一個功能,將一些圖像複製到畫布上並將其保存到文件中。我的代碼在帖子的底部。如何將大量圖像複製到PHP中的畫布上?

當我嘗試將15圖像複製到畫布上時,代碼正常工作,但是當我嘗試複製30時,它只是停止。沒有錯誤或異常...

我希望你可以幫我:)

$img  = imagecreatefromjpeg($image); 
    $imgWidth = imagesx($img); 
    $imgHeight = imagesy($img); 

    // CREATE CANVAS AND FILL WITH WHITE 
    $canvas  = imagecreatetruecolor($guidelines['canvasW'] * $dpi, $guidelines['canvasH'] * $dpi); 
    $color  = imagecolorallocate($canvas, 255, 255, 255); 
    imagefill($canvas, 0, 0, $color); 

    // COPY THE IMAGES ONTO THE CANVAS 
    foreach($guidelines['imageGuide'] as $guide): 

     $bestFit = bestFit($imgWidth, $imgHeight, $guide['W'] * $dpi, $guide['H'] * $dpi); 
     if($bestFit['rotate']) { 
      $output = imagerotate($img, 90, 0); 
     } else { 
      $output = imagerotate($img, 0, 0); 
     } 
     imagecopyresampled($canvas, $output, $guide['X'] * $dpi, $guide['Y'] * $dpi, 0, 0, $bestFit['x'], $bestFit['y'], imagesx($output), imagesy($output)); 

     imagedestroy($output); 
    endforeach; 

$指引是一個數組。下面是一個將16張圖像複製到畫布上的示例。

$guidelines = array( 'canvasW' => 20, 
      'canvasH' => 30, 
      'imageGuide' => array(
         array('W' => 18, 'H' => 13, 'X' => 1, 'Y' => 1.5), 

         array('W' => 3.5, 'H' => 4.5, 'X' => 1.25, 'Y' => 15), 
         array('W' => 3.5, 'H' => 4.5, 'X' => 4.75, 'Y' => 15), 
         array('W' => 3.5, 'H' => 4.5, 'X' => 8.25, 'Y' => 15), 
         array('W' => 3.5, 'H' => 4.5, 'X' => 11.75, 'Y' => 15), 
         array('W' => 3.5, 'H' => 4.5, 'X' => 15.25, 'Y' => 15), 

         array('W' => 3.5, 'H' => 4.5, 'X' => 1.25, 'Y' => 19.5), 
         array('W' => 3.5, 'H' => 4.5, 'X' => 4.75, 'Y' => 19.5), 
         array('W' => 3.5, 'H' => 4.5, 'X' => 8.25, 'Y' => 19.5), 
         array('W' => 3.5, 'H' => 4.5, 'X' => 11.75, 'Y' => 19.5), 
         array('W' => 3.5, 'H' => 4.5, 'X' => 15.25, 'Y' => 19.5), 

         array('W' => 3.5, 'H' => 4.5, 'X' => 1.25, 'Y' => 24), 
         array('W' => 3.5, 'H' => 4.5, 'X' => 4.75, 'Y' => 24), 
         array('W' => 3.5, 'H' => 4.5, 'X' => 8.25, 'Y' => 24), 
         array('W' => 3.5, 'H' => 4.5, 'X' => 11.75, 'Y' => 24), 
         array('W' => 3.5, 'H' => 4.5, 'X' => 15.25, 'Y' => 24), 
        ), 
       ); 
+0

你有錯誤報告嗎?它通常在這種情況下用完內存... – 2011-01-25 21:44:05

+0

你檢查了你的錯誤日誌,並嘗試把`error_reporting(0)`放在你的應用程序中,應該有一個痕跡 – RobertPitt 2011-01-25 21:45:21

回答

0

我猜測您在此作業中使用的RAM太多。 ImageCopyResampled必須用這項工作將大量內容寫入RAM,並且圖像可能佔用大量內存。在您的php.ini文件中檢查memory_limit,嘗試增加它,看看是否可以通過更多/所有的圖像被寫入畫布。祝你好運!