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此功能正在创建一些随机黑色图像,如.. 10%的时间, 并不多,但..你知道..应该发生。在error_log中给出PHP + GD创建随机黑色缩略图
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, $targetFile, 85); // 85 is my choice, make it between 0 – 100 for output image quality with 100 being the most luxurious
}
}
没有错误。这里是gd_info():
Array(
[GD Version] => bundled (2.0.34 compatible)
[FreeType Support] =>
[T1Lib Support] =>
[GIF Read Support] => 1
[GIF Create Support] => 1
[JPG Support] => 1
[PNG Support] => 1
[WBMP Support] => 1
[XPM Support] => 1
[XBM Support] => 1
[JIS-mapped Japanese Font Support] =>)1
服务器是linux。函数被这样调用: 假设$ imagen是实际的源图像,$ imagendestino是新缩略图的路径和文件名。
if (!file_exists($imagendestino)) {
$work = new ImgResizer($imagen);
$work -> resize(475, $imagendestino);
}
在此先感谢!
您确定您启用了错误日志记录吗? – 2010-06-12 11:57:30
失败的确定性?即输出文件的输出总是相同的吗? – 2011-02-21 13:30:58