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此功能正在創建一些隨機黑色圖像,如.. 10%的時間, 並不多,但..你知道..應該發生。在error_log中給出PHP + GD創建隨機黑色縮略圖
class ImgResizer {
private $originalFile = '';
public function __construct($originalFile = '') {
$this -> originalFile = $originalFile;
}
public function resize($newWidth, $targetFile) {
if (empty($newWidth) || empty($targetFile)) {
return false;
}
$src = imagecreatefromjpeg($this -> originalFile);
list($width, $height) = getimagesize($this -> originalFile);
$newHeight = ($height/$width) * $newWidth;
if ($newHeight<'335') {
//$newHeight='335';
}
$tmp = imagecreatetruecolor($newWidth, $newHeight);
#$tmp = imagecreate($newWidth, $newHeight);
imagecopyresampled($tmp, $src, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);
if (file_exists($targetFile)) {
unlink($targetFile);
}
imagejpeg($tmp, $targetFile, 85); // 85 is my choice, make it between 0 – 100 for output image quality with 100 being the most luxurious
}
}
沒有錯誤。這裏是gd_info():
Array(
[GD Version] => bundled (2.0.34 compatible)
[FreeType Support] =>
[T1Lib Support] =>
[GIF Read Support] => 1
[GIF Create Support] => 1
[JPG Support] => 1
[PNG Support] => 1
[WBMP Support] => 1
[XPM Support] => 1
[XBM Support] => 1
[JIS-mapped Japanese Font Support] =>)1
服務器是linux。函數被這樣調用: 假設$ imagen是實際的源圖像,$ imagendestino是新縮略圖的路徑和文件名。
if (!file_exists($imagendestino)) {
$work = new ImgResizer($imagen);
$work -> resize(475, $imagendestino);
}
在此先感謝!
您確定您啓用了錯誤日誌記錄嗎? – 2010-06-12 11:57:30
失敗的確定性?即輸出文件的輸出總是相同的嗎? – 2011-02-21 13:30:58