imagejpeg
(PHP 4, PHP 5)
imagejpeg — Output image to browser or file
설명
imagejpeg() creates a JPEG file from the given image .
인수
- image
-
imagecreatetruecolor() 등의 이미지 생성 함수에서 반환한 이미지 자원.
- 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).
반환값
성공할 경우 TRUE를, 실패할 경우 FALSE를 반환합니다.
예제
Example #1 Outputting a JPEG image
<?php
// Create a blank image and add some text
$im = imagecreatetruecolor(120, 20);
$text_color = imagecolorallocate($im, 233, 14, 91);
imagestring($im, 1, 5, 5, 'A Simple Text String', $text_color);
// Set the content type header - in this case image/jpeg
header('Content-type: image/jpeg');
// Output the image
imagejpeg($im);
// Free up memory
imagedestroy($im);
?>
위 예제의 출력 예시:
Example #2 Saving a JPEG image
<?php
// Create a blank image and add some text
$im = imagecreatetruecolor(120, 20);
$text_color = imagecolorallocate($im, 233, 14, 91);
imagestring($im, 1, 5, 5, 'A Simple Text String', $text_color);
// Save the image as 'simpletext.jpg'
imagejpeg($im, 'simpletext.jpg');
// Free up memory
imagedestroy($im);
?>
Example #3 Outputting the image at 75% quality
<?php
// Create a blank image and add some text
$im = imagecreatetruecolor(120, 20);
$text_color = imagecolorallocate($im, 233, 14, 91);
imagestring($im, 1, 5, 5, 'A Simple Text String', $text_color);
// Set the content type header - in this case image/jpeg
header('Content-type: image/jpeg');
// Skip the filename parameter using NULL, then set the quality to 75%
imagejpeg($im, NULL, 75);
// Free up memory
imagedestroy($im);
?>
주의
Note: JPEG 지원은 PHP를 GD-1.8 이상에서 컴파일해야 합니다.
Note: If you want to output Progressive JPEGs, you need to set interlacing on with imageinterlace().
참고
- imagepng() - Output a PNG image to either the browser or a file
- imagegif() - Output image to browser or file
- imagewbmp() - Output image to browser or file
- imageinterlace() - Enable or disable interlace
- imagetypes() - Return the image types supported by this PHP build