php man page for imagejpeg

IMAGEJPEG(3)								 1							      IMAGEJPEG(3)

imagejpeg - Output image to browser or file

SYNOPSIS
       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)