imagearc

(PHP 3, PHP 4, PHP 5)

imagearc -- Draw a partial ellipse

Description

bool imagearc ( resource image, int cx, int cy, int w, int h, int s, int e, int color )

imagearc() draws a partial ellipse centered at cx, cy (top left is 0, 0) in the image represented by image. W and h specifies the ellipse's width and height respectively while the start and end points are specified in degrees indicated by the s and e arguments. 0° is located at the three-o'clock position, and the arc is drawn clockwise.

Example 1. Drawing a circle with imagearc()

<?php

// create a 200*200 image
$img imagecreatetruecolor(200200);

// allocate some colors
$white imagecolorallocate($img255255255);
$black imagecolorallocate($img000);
   
// draw a black circle 
imagearc($img1001001501500360$black);

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

?>

See also imageellipse(), imagefilledellipse(), and imagefilledarc().