imagefilledpolygon() is an inbuilt PHP function that is used to draw a filled polygon.
Syntax
bool imagefilledpolygon($image, $points, $num_points, $color)
Parameters
imagefilledpolygon() takes four different parameters − $image, $points, $num_points, and $color.
$image − Creates a blank image in a given size using the imagecreatetruecolor() function.
$points − Holds the sequential vertices of the polygon.
$num_points − Contains the total number of vertices in a polygon. The total number of points/vertices must be at least three to create a polygon.
$color − Contains the filled color identifier using imagecolorallocate() function.
Return Values
It returns True on success and False on failure.
Example 1
<?php
// set up array of points for a polygon
$values = array(
40, 50, // Point 1 (x, y)
20, 240, // Point 2 (x, y)
60, 60, // Point 3 (x, y)
240, 20, // Point 4 (x, y)
50, 40, // Point 5 (x, y)
10, 10 // Point 6 (x, y)
);
// create the image using imagecreatetruecolor function
$img = imagecreatetruecolor(700, 350);
// allocated the blue and gray colors
$bg = imagecolorallocate($img, 122, 122, 122);
$blue = imagecolorallocate($img, 0, 0, 255);
// filled the background
imagefilledrectangle($img, 0, 0, 350, 350, $bg);
// draw a polygon
imagefilledpolygon($img, $values, 6, $blue);
// flush image
header('Content-type: image/png');
imagepng($img);
imagedestroy($img);
?>Output
Example 2
<?php
// Set the vertices of the polygon
$values = array(
150, 50, // Point 1 (x, y)
55, 119, // Point 2 (x, y)
91, 231, // Point 3 (x, y)
209, 231, // Point 4 (x, y)
245, 119 // Point 5 (x, y)
);
// It creates the size of the image or blank image.
$img = imagecreatetruecolor(700, 350);
// Set the gray background image color
$bg = imagecolorallocate($img, 122, 122, 122);
// Set the red image color
$red = imagecolorallocate($img, 255, 0, 0);
// fill the background
imagefilledrectangle($img, 0, 0, 350, 350, $bg);
// Draw the polygon image
imagefilledpolygon($img, $values, 5, $red);
// Output of the image.
header('Content-type: image/png');
imagepng($img);
imagedestroy($img);
?>Output
