IMAGECREATE(3) 1 IMAGECREATE(3)imagecreate - Create a new palette based imageSYNOPSIS
resource imagecreate (int $width, int $height)
DESCRIPTION imagecreate(3) returns an image identifier representing a blank image of specified size.
In general, we recommend the use of imagecreatetruecolor(3) instead of imagecreate(3) so that image processing occurs on the highest qual-
ity image possible. If you want to output a palette image, then imagetruecolortopalette(3) should be called immediately before saving the
image with imagepng(3) or imagegif(3).
PARAMETERS
o $width
- The image width.
o $height
- The image height.
RETURN VALUES
Returns an image resource identifier on success, FALSE on errors.
EXAMPLES
Example #1
Creating a new GD image stream and outputting an image.
<?php
header("Content-Type: image/png");
$im = @imagecreate(110, 20)
or die("Cannot Initialize new GD image stream");
$background_color = imagecolorallocate($im, 0, 0, 0);
$text_color = imagecolorallocate($im, 233, 14, 91);
imagestring($im, 1, 5, 5, "A Simple Text String", $text_color);
imagepng($im);
imagedestroy($im);
?>
The above example will output something similar to:[NOT DISPLAYABLE MEDIA]Output of example : Creating a new GD image stream and
outputting an image.
SEE ALSO imagedestroy(3), imagecreatetruecolor(3).
PHP Documentation Group IMAGECREATE(3)
Check Out this Related Man Page
IMAGEJPEG(3) 1 IMAGEJPEG(3)imagejpeg - Output image to browser or fileSYNOPSIS
bool imagejpeg (resource $image, [string $filename], [int $quality])
DESCRIPTION imagejpeg(3) creates a JPEG file from the given $image.
PARAMETERS
o $
image -An image resource, returned by one of the image creation functions, such as imagecreatetruecolor(3).
o $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.
o $quality
-$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 VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
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);
?>
The above example will output something similar to:[NOT DISPLAYABLE MEDIA]Output of example : Outputting a JPEG image
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);
?>
NOTES
Note
JPEG support is only available if PHP was compiled against GD-1.8 or later.
Note
If you want to output Progressive JPEGs, you need to set interlacing on with imageinterlace(3).
SEE ALSO imagepng(3), imagegif(3), imagewbmp(3), imageinterlace(3), imagetypes(3).
PHP Documentation Group IMAGEJPEG(3)