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imageopenpolygon

PHP function Edit on GitHub ✎

(PHP 7 >= 7.2.0, PHP 8)

Draws an open polygon

Description

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.

Parameters

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

Color

Return Values

Success

Changelog

Version	Description
8.1.0	The parameter `num_points` has been deprecated.

Examples

imageopenpolygon() example

php

<?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
    ),
    $col_poly);

// Output the picture to the browser
header('Content-type: image/png');

imagepng($image);
?>

The above example will output something similar to: Output of example : imageopenpolygon()