imagejpeg
(PHP 4, PHP 5, PHP 7)
imagejpeg — Output image to browser or file
Description
imagejpeg() creates a JPEG file from
the given image.
Parameters
-
image -
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
-
to -
The path or an open stream resource (which is automatically being closed after this function returns) to save the file to. If not set or
NULL, the raw image stream will be outputted directly. -
quality -
qualityis optional, and ranges from 0 (worst quality, smaller file) to 100 (best quality, biggest file). The default (-1) uses the default IJG quality value (about 75).
Return Values
Returns TRUE on success or FALSE on failure.
However, if libgd fails to output the image, this function returns TRUE.
Changelog
| Version | Description |
|---|---|
| 5.4.0 |
Added support for passing a stream resource to
to.
|
| 5.4.0 |
Disallowed passing an empty string to to to
skip this argument.
|
Examples
Example #1 Outputting a JPEG image to the browser
<?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);
?>
The above example will output something similar to:
Example #2 Saving a JPEG image to a file
<?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 to the browser
<?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', $text_color);
// Set the content type header - in this case image/jpeg
header('Content-Type: image/jpeg');
// Skip the to parameter using NULL, then set the quality to 75%
imagejpeg($im, NULL, 75);
// Free up memory
imagedestroy($im);
?>
Notes
Note:
If you want to output Progressive JPEGs, you need to set interlacing on with imageinterlace().
See Also
- 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
English translation
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Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-imagejpeg.html
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References
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