imagecreatefromgif(3) [php man page]

IMAGECREATEFROMGIF(3)							 1						     IMAGECREATEFROMGIF(3)

imagecreatefromgif - Create a new image from file or URL

SYNOPSIS

       resource imagecreatefromgif (string  $filename)

DESCRIPTION

       imagecreatefromgif(3) returns an image identifier representing the image obtained from the given filename.

       Tip

	      A  URL can be used as a filename with this function if the fopen wrappers have been enabled. See fopen(3) for more details on how to
	      specify the filename. See the "Supported Protocols and Wrappers" for links to information about what abilities the various  wrappers
	      have, notes on their usage, and information on any predefined variables they may provide.

PARAMETERS

	      o $filename
		- Path to the GIF image.

RETURN VALUES

       Returns an image resource identifier on success, FALSE on errors.

EXAMPLES

       Example #1

	      Example to handle an error during loading of a GIF

	      <?php
	      function LoadGif($imgname)
	      {
		  /* Attempt to open */
		  $im = @imagecreatefromgif($imgname);

		  /* See if it failed */
		  if(!$im)
		  {
		      /* Create a blank image */
		      $im = imagecreatetruecolor (150, 30);
		      $bgc = imagecolorallocate ($im, 255, 255, 255);
		      $tc = imagecolorallocate ($im, 0, 0, 0);

		      imagefilledrectangle ($im, 0, 0, 150, 30, $bgc);

		      /* Output an error message */
		      imagestring ($im, 1, 5, 5, 'Error loading ' . $imgname, $tc);
		  }

		  return $im;
	      }

	      header('Content-Type: image/gif');

	      $img = LoadGif('bogus.image');

	      imagegif($img);
	      imagedestroy($img);
	      ?>

	      The  above  example  will  output  something similar to:[NOT DISPLAYABLE MEDIA]Output of example : Example to handle an error during
	      loading of a GIF

NOTES

       Note

	       GIF support was removed from the GD library in Version 1.6, and added back in  Version  2.0.28.	This  function	is  not  available
	      between these versions.

       Note

	       When reading animated GIF files into memory, only the first frame is returned in the image resource pointer.

PHP Documentation Group 												     IMAGECREATEFROMGIF(3)

IMAGEFLIP(3)								 1							      IMAGEFLIP(3)

imageflip - Flips an image using a given mode

SYNOPSIS

       bool imageflip (resource  $image, int  $mode)

DESCRIPTION

	Flips the $image image using the given $mode.

PARAMETERS

	      o $
		image -An image resource, returned by one of the image creation functions, such as imagecreatetruecolor(3).

	      o $mode
		- Flip mode, this can be one of the IMG_FLIP_* constants:

	      +--------------------+---------------------------------------------------+
	      |     Constant	   |						       |
	      | 		   |						       |
	      | 		   |			  Meaning		       |
	      | 		   |						       |
	      +--------------------+---------------------------------------------------+
	      | 		   |						       |
	      |IMG_FLIP_HORIZONTAL |						       |
	      | 		   |						       |
	      | 		   |	       Flips the image horizontally.	       |
	      | 		   |						       |
	      | 		   |						       |
	      | IMG_FLIP_VERTICAL  |						       |
	      | 		   |						       |
	      | 		   |		Flips the image vertically.	       |
	      | 		   |						       |
	      | 		   |						       |
	      |   IMG_FLIP_BOTH    |						       |
	      | 		   |						       |
	      | 		   |  Flips  the  image  both  horizontally and verti- |
	      | 		   | cally.					       |
	      | 		   |						       |
	      +--------------------+---------------------------------------------------+
RETURN VALUES

	Returns TRUE on success or FALSE on failure.

EXAMPLES

       Example #1

	      Flips an image vertically

	       This example uses the IMG_FLIP_VERTICAL constant.

	      <?php
	      // File
	      $filename = 'phplogo.png';

	      // Content type
	      header('Content-type: image/png');

	      // Load
	      $im = imagecreatefrompng($filename);

	      // Flip it vertically
	      imageflip($im, IMG_FLIP_VERTICAL);

	      // Output
	      imagejpeg($im);
	      imagedestroy($im);
	      ?>

	      The above example will output something similar to:[NOT DISPLAYABLE MEDIA]Output of example: Vertically flipped image

       Example #2

	      Flips the image horizontally

	       This example uses the IMG_FLIP_HORIZONTAL constant.

	      <?php
	      // File
	      $filename = 'phplogo.png';

	      // Content type
	      header('Content-type: image/png');

	      // Load
	      $im = imagecreatefrompng($filename);

	      // Flip it horizontally
	      imageflip($im, IMG_FLIP_HORIZONTAL);

	      // Output
	      imagejpeg($im);
	      imagedestroy($im);
	      ?>

	      The above example will output something similar to:[NOT DISPLAYABLE MEDIA]Output of example: Horizontally flipped image

NOTES

       Note

	      This function is only available if PHP is compiled with the bundled version of the GD library.

PHP Documentation Group 													      IMAGEFLIP(3)