imageopenpolygon

(PHP 7 >= 7.2.0, PHP 8)

imageopenpolygon — Draws an open polygon

Descripción

Signature as of PHP 8.0.0 (not supported with named arguments)

imageopenpolygon(GdImage$image, array$points, int$color): bool

Alternative signature (deprecated as of PHP 8.1.0)

imageopenpolygon(
    GdImage$image,
    array$points,
    int$num_points,
    int$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.

Parámetros

image

Un recurso image, es devuelto por una de las funciones de creación de imágenes, como 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, points must have an even number of elements, and num_points is assumed to be count($points)/2.

color

Un identificador de color creato con imagecolorallocate().

Valores devueltos

Devuelve true en caso de éxito o false en caso de error.

Historial de cambios

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.

Ejemplos

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:

Ver también

imagepolygon() - Dibujar un polígono