Description
int
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.
Exemplu 1. Drawing a circle with imagearc()
<?php
// create a 200*200 image
$img = imagecreate(200, 200);
// allocate some colors
$white = imagecolorallocate($img, 255, 255, 255);
$black = imagecolorallocate($img, 0, 0, 0);
// draw a black circle
imagearc($img, 100, 100, 150, 150, 0, 360, $black);
// output image in the browser
header("Content-type: image/png");
imagepng($img);
// free memory
imagedestroy($img);
?>
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See also imageellipse(),
imagefilledellipse(), and
imagefilledarc().
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