PHP Tutorial - PHP imagearc() function






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

Syntax

PHP imagearc() function has the following syntax.

bool imagearc(resource $image , int $cx , int $cy , int $width , int $height , int $start , int $end , int $color )

Parameter

PHP imagearc() function has the following parameters.

  • image - An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
  • cx - x-coordinate of the center.
  • cy - y-coordinate of the center.
  • width - The arc width.
  • height - The arc height.
  • start - The arc start angle, in degrees.
  • end - The arc end angle, in degrees. 0? is located at the three-o'clock position, and the arc is drawn clockwise.
  • color - A color identifier created with imagecolorallocate().




Return

Returns TRUE on success or FALSE on failure.

Example

Drawing a circle with imagearc() 

<?php/*from ww  w .jav  a2s.  c o m*/
$img = imagecreatetruecolor(200, 200);// create a 200*200 image
$blue  = imagecolorallocate($img,   0,   0, 255);// colors

// draw the head
imagearc($img, 140,  75,  50,  50,  0, 360, $blue);

// output image in the browser
header("Content-type: image/png");
imagepng($img);

imagedestroy($img);
?>