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imageopenpolygon

Description

The imageopenpolygon of Image for PHP draws an open polygon.

Syntax

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

Parameters

image

A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().

points

An array containing the x and y coordinates of the polygons vertices consecutively.

color

A color identifier created with imagecolorallocate().

Return

Returns true on success or false on failure.

Examples

1 · return

<?

$width = 100;
$height = 100;
$image = imagecreate($width, $height);

$red = 255;
$green = 255;
$blue = 255;
$color = imagecolorallocate($image, $red, $green, $blue);

$points =
[
    0, 50,
    50, 0,
    100, 50,
    50, 100
];

$return = imageopenpolygon($image, $points, $color);
    
var_export($return);

true

2 · base64

<?

$width = 100;
$height = 100;
$image = imagecreatetruecolor($width, $height);

$red = 255;
$green = 255;
$blue = 255;
$color = imagecolorallocate($image, $red, $green, $blue);

$points =
[
    0, 50,
    50, 0,
    100, 50,
    50, 100
];
imageopenpolygon($image, $points, $color);

ob_start();

    imagepng($image);

$output = ob_get_clean();

echo '<!doctype html>
<html>
<body>
    <img src="data:image/png;base64,' . base64_encode($output) . '">
</body>
</html>';

<!doctype html>
<html>
<body>
    <img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAIAAAD/gAIDAAAACXBIWXMAAA7EAAAOxAGVKw4bAAABiUlEQVR4nO3S243DMAwFUffftPeDWCRIHHv8kERJMxVcHnBZUraua+sJnRRSeh33bqTXXt86em33y0Wvz/ZF9HpFLPRaljMKs3udvX9er2uXz+h15+a5vO5fO4vXU3eO7/XshSN7lbhtTK9yV43mVfqecbzqXDKCV80b+vaqv75Xr1a7+/Nqu7gnrwxbM2w4Ls/KPEu2y7Yv255XOZdlXJVx03+5tuVas1WWhVl2HNV+Z/sFZ2q5ti+pqM3mHqWi2sv7lYrq7e9dKqpxxRhSUdlbRpKKSl00nlT0/F2jSkVPXje2VPTMjTNIRXcvnUcqun7vbFLRlavnlIrO3T6zVEQFlIqOHZR6b09Dqe+2TZT61aeMUvu9fJQireuqlBXIr6IpRVOKphRNKZpSNKVoStGUoilFU4qmFE0pmlI0pWhK0ZSiKUVTiqYUTSmaUjSlaErRlKIpRVOKphRNKZpSNKVoStGUoilFU4qmFE0pmlI0pWhK0ZSiKUVTiqYUTSmaUjSlaErREkr9Ab7zvVGCCmRLAAAAAElFTkSuQmCC">
</body>
</html>