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數據庫目前,我有一個腳本,將在圖像內容拉從一個數據庫,並使用createimagefromstring()調整大小,返回一個調整(重採樣)圖像顯示:圖像從PHP
$max_width = 170;
// Get the image
@mysql_connect('host', 'user', 'pass');
@mysql_select_db('db');
$query = "SELECT `thumbnail_contents`, `thumbnail_mimetype` FROM `videos` WHERE video_number = '$video_number'";
$result = mysql_query($query) or die(mysql_error());
$row = mysql_fetch_object($result);
// Resize if pic bigger than $max_width
// Set the header
header('Content-type:' . $row->thumbnail_mimetype);
// Get original size of image
$image = imagecreatefromstring($row->thumbnail_contents);
$current_width = imagesx($image);
$current_height = imagesy($image);
// Set thumbnail width
$widths = array($current_width, $max_width);
$new_width = min($widths);
// Calculate thumbnail height from given width to maintain ratio
$new_height = $current_height/$current_width*$new_width;
// Create new image using thumbnail sizes
$thumb = imagecreatetruecolor($new_width,$new_height);
// Copy original image to thumbnail
imagecopyresampled($thumb,$image,0,0,0,0,$new_width,$new_height,imagesx($image),imagesy($image));
// Show thumbnail on screen
$show = imagejpeg($thumb);
// Clean memory
imagedestroy($image);
imagedestroy($thumb);
目前,此腳本適用於大多數縮略圖,並根據需要在屏幕上顯示它們。但是,當我上傳寬度較大(例如超過1000像素)的圖像時,它將存儲在數據庫中,但腳本不顯示重新採樣的圖像。
爲了排除故障,我檢查了db以及print_r'd查詢的輸出。一切似乎都是猶太教......有人能告訴我什麼可能導致這種行爲?任何幫助或指導,非常感謝!
非常感謝。如果我有,我會付錢的。 :) – 2009-08-13 02:30:45