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我想用這個函數從亞馬遜s3的extenals url創建縮略圖。從網址創建thunmbnail？
function resizeImage($originalImage,$toWidth,$toHeight){
// Get the original geometry and calculate scales
list($width, $height) = file_get_contents($originalImage);
$xscale=$width/$toWidth;
$yscale=$height/$toHeight;
// Recalculate new size with default ratio
if ($yscale>$xscale){
$new_width = round($width * (1/$yscale));
$new_height = round($height * (1/$yscale));
}
else {
$new_width = round($width * (1/$xscale));
$new_height = round($height * (1/$xscale));
}
// Resize the original image
$imageResized = imagecreatetruecolor($new_width, $new_height);
$imageTmp = imagecreatefromjpeg ($originalImage);
imagecopyresampled($imageResized, $imageTmp, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
return $imageResized;
}
我遇到的問題是，它似乎只與相對url的工作，我得到以下錯誤。
Warning: Division by zero in /home/isd/public_html/swfupload/resize.php on line 15
Warning: Division by zero in /home/isd/public_html/swfupload/resize.php on line 16
Warning: imagecreatetruecolor() [function.imagecreatetruecolor]: Invalid image dimensions in /home/isd/public_html/swfupload/resize.php on line 20
Warning: imagecreatefromjpeg(Chrysanthemum.jpg) [function.imagecreatefromjpeg]: failed to open stream: No such file or directory in /home/isd/public_html/swfupload/resize.php on line 21
Warning: imagecopyresampled(): supplied argument is not a valid Image resource in /home/isd/public_html/swfupload/resize.php on line 22
Warning: Division by zero in /home/isd/public_html/swfupload/resize.php on line 15
Warning: Division by zero in /home/isd/public_html/swfupload/resize.php on line 16
Warning: imagecreatetruecolor() [function.imagecreatetruecolor]: Invalid image dimensions in /home/isd/public_html/swfupload/resize.php on line 20
Warning: imagecreatefromjpeg(Desert.jpg) [function.imagecreatefromjpeg]: failed to open stream: No such file or directory in /home/isd/public_html/swfupload/resize.php on line 21
Warning: imagecopyresampled(): supplied argument is not a valid Image resource in /home/isd/public_html/swfupload/resize.php on line 22
Warning: file_get_contents(http://isdprogress.s3.amazonaws.com/HQ preview.jpg) [function.file-get-contents]: failed to open stream: HTTP request failed! HTTP/1.1 505 HTTP Version Not Supported in /home/isd/public_html/swfupload/resize.php on line 5
有誰現在的好方法或功能，我可以使用效果來調整圖像從外部URL thunmbnails ???
謝謝
什麼是resize.php 15行？ – Select0r 2011-02-11 12:38:18