GoLang imagejpeg

request it (399)
GoLang replacement for PHP's imagejpeg [edit | history]



Do you know a GoLang replacement for PHP's imagejpeg? Write it!

PHP imagejpeg

PHP original manual for imagejpeg [ show | php.net ]

imagejpeg

(PHP 4, PHP 5, PHP 7)

imagejpeg — Output image to browser or file

Description

bool imagejpeg ( resource $image [, mixed $to [, int $quality ]] )

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.

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 Values

Returns TRUE on success or FALSE on failure.

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:

Output of example : Outputting a JPEG image

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().

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.

See Also