(PHP 4, PHP 5, PHP 7)
imagejpeg — Output image to browser or file
imagejpeg ( resource $image [, mixed $to = null [, int $quality = -1 ]] ) : bool
imagejpeg() creates a JPEG file from the given image
.
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
quality
is 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).
Returns true
on success or false
on failure.
However, if libgd fails to output the image, this function returns true
.
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); ?>
Note:
If you want to output Progressive JPEGs, you need to set interlacing on with imageinterlace().
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https://www.php.net/manual/en/function.imagejpeg.php