imagepolygon() function in PHP

The imagepolygon() function is used to draw a polygon.

Syntax

bool imagepolygon( $img, $points, $num_points, $color)

Parameters

• $img: Create a blank image with imagecreatetruecolor() function.
• $points: An array with vertices of polygon.
• $num_points: Total number of vertices in a polygon.
• $color: A color identifier created with imagecolorallocate() function.

Return

The imagepolygon() function returns TRUE on success or FALSE on failure.

Example

The following is an example:

<?php
   $img = imagecreatetruecolor(400, 300);
   $color = imagecolorallocate($img, 120, 160, 190);
   $bgcolor = imagecolorallocate($img, 10, 100, 50);  
   imagefill($img, 0, 0, $bgcolor);
   imagepolygon($img, array(
      50, 50,
      150, 200,
      340, 200
   ),
   3,
   $color);
   header('Content-type: image/png');
   imagepng($img);
   imagedestroy($img);
?>

Output

The following is the output: