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# imagearc

(PHP 3, PHP 4 , PHP 5)

imagearc -- Draw a partial ellipse

## 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.

示範 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); ?>`

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

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