imagejpeg
(PHP 4, PHP 5)
imagejpeg — Output image to browser or file
說明
bool imagejpeg
( resource $image
[, string $filename
[, int $quality
]] )
imagejpeg() creates a JPEG file from the given image .
參數
- image
-
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
- filename
-
The path to save the file to. If not set or NULL, the raw image stream will be outputted directly.
To skip this argument in order to provide the quality parameter, use NULL.
- quality
-
quality is optional, and ranges from 0 (worst quality, smaller file) to 100 (best quality, biggest file). The default is the default IJG quality value (about 75).
Return值
如果成功則回傳 TRUE，失敗則回傳 FALSE。
註釋
Note: JPEG 支持僅在 PHP 與 GD-1.8 或更高版本一起編譯時可用。
Note: If you want to output Progressive JPEGs, you need to set interlacing on with imageinterlace().