imagearc(3) [php man page]
IMAGEARC(3) 1 IMAGEARC(3) imagearc - Draws an arc SYNOPSIS
bool imagearc (resource $image, int $cx, int $cy, int $width, int $height, int $start, int $end, int $color) DESCRIPTION
imagearc(3) draws an arc of circle centered at the given coordinates. PARAMETERS
o $ image -An image resource, returned by one of the image creation functions, such as imagecreatetruecolor(3). o $cx - x-coordinate of the center. o $cy - y-coordinate of the center. o $width - The arc width. o $height - The arc height. o $start - The arc start angle, in degrees. o $end - The arc end angle, in degrees. 0o is located at the three-o'clock position, and the arc is drawn clockwise. o $color - A color identifier created with imagecolorallocate(3). RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 Drawing a circle with imagearc(3) <?php // create a 200*200 image $img = imagecreatetruecolor(200, 200); // allocate some colors $white = imagecolorallocate($img, 255, 255, 255); $red = imagecolorallocate($img, 255, 0, 0); $green = imagecolorallocate($img, 0, 255, 0); $blue = imagecolorallocate($img, 0, 0, 255); // draw the head imagearc($img, 100, 100, 200, 200, 0, 360, $white); // mouth imagearc($img, 100, 100, 150, 150, 25, 155, $red); // left and then the right eye imagearc($img, 60, 75, 50, 50, 0, 360, $green); imagearc($img, 140, 75, 50, 50, 0, 360, $blue); // output image in the browser header("Content-type: image/png"); imagepng($img); // free memory imagedestroy($img); ?> The above example will output something similar to:[NOT DISPLAYABLE MEDIA]Output of example : Drawing a circle with imagearc() SEE ALSO
imagefilledarc(3), imageellipse(3), imagefilledellipse(3). PHP Documentation Group IMAGEARC(3)
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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)