PHP imagearc function

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imagearc

(PHP 3, PHP 4, PHP 5)

imagearc() draws an arc of circle centered at the given
coordinates.

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

x-coordinate of the center

y-coordinate of the center

The arc width

The arc height

The arc start angle, in degrees.

The arc end angle, in degrees.
0° is located at the three-o’clock position, and the arc is drawn
clockwise.

A color identifier created with
imagecolorallocate()

Returns TRUE on success or FALSE on failure.

Example 1. Drawing a circle with imagearc()

 
// 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: