(PHP 7 >= 7.2.0, PHP 8)
imageopenpolygon — Draws an open polygon
Signature as of PHP 8.0.0 (not supported with named arguments)
Alternative signature (deprecated as of PHP 8.1.0)
imageopenpolygon() draws an open polygon on the given
image. Contrary to imagepolygon(),
no line is drawn between the last and the first point.
imageUn recurso image, es devuelto por una de las funciones de creación de imágenes, como imagecreatetruecolor().
pointsAn array containing the polygon's vertices, e.g.:
| points[0] | = x0 |
| points[1] | = y0 |
| points[2] | = x1 |
| points[3] | = y1 |
num_pointsTotal number of points (vertices), which must be at least 3.
If this parameter is omitted as per the second signature,points
must have an even number of elements, and num_points is
assumed to be count($points)/2.
colorUn identificador de color creato con imagecolorallocate().
| Versión | Descripción |
|---|---|
| 8.1.0 |
The parameter num_points has been deprecated.
|
| 8.0.0 |
image expects a GdImage
instance now; previously, a valid gd resource was expected.
|
Ejemplo #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);
?>El resultado del ejemplo sería algo similar a: