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/PHPimageopenpolygon
(PHP 7 >= 7.2.0)
imageopenpolygon — Draws an open polygon
Description
imageopenpolygon ( resource $image , array $points , int $num_points , int $color ) : bool
Alternative signature (as of PHP 8.0.0)
imageopenpolygon ( resource $image , array $points , int $color ) : bool
imageopenpolygon() draws an open polygon on the given image. Contrary to imagepolygon(), no line is drawn between the last and the first point.
Parameters
-
image -
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
-
points -
An array containing the polygon's vertices, e.g.:
points[0] = x0 points[1] = y0 points[2] = x1 points[3] = y1 -
num_points -
Total number of points (vertices), which must be at least 3.
If this parameter is omitted as per the second signature,pointsmust have an even number of elements, andnum_pointsis assumed to becount($points)/2. -
color -
A color identifier created with imagecolorallocate().
Return Values
Returns true on success or false on failure.
Examples
Example #1 imageopenpolygon() example
<?php
// Create a blank image
$image = imagecreatetruecolor(400, 300);
// Allocate a color for the polygon
$col_poly = imagecolorallocate($image, 255, 255, 255);
// Draw the polygon
imageopenpolygon($image, array(
0, 0,
100, 200,
300, 200
),
3,
$col_poly);
// Output the picture to the browser
header('Content-type: image/png');
imagepng($image);
imagedestroy($image);
?> The above example will output something similar to:
See Also
- imagepolygon() - Draws a polygon
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.imageopenpolygon.php