How to draw shapes in php

Advertisemen

Let's start by drawing a line first.

<?php
    $width = 500;
    $height = 200;
    $img = ImageCreateTrueColor($width, $height);
    $background_color = 0xFFFFFF; // white

    ImageFilledRectangle($img, 0, 0, $width - 1,
        $height - 1, $background_color);

    imagesetthickness($img, 5);

    $x1 = $y1 = 10 ; 
    $x2 = $y2 = $height - 1;
    $color = 0xCCCCCC; // gray

    ImageLine($img, $x1, $y1, $x2, $y2, $color);

    header('Content-type: image/png');
    ImagePNG($img);
    ImageDestroy($img);
?>

There are nothing much to explain here because most of them are pretty self explanatory.
ImageFilledRectange creates a rectangle with height of 199px (200-1) and width of 499px (500-1) then we create line using ImageLine function, line starts at (x1, y1) = 10 and ends at (x2, y2) = 499.

This should print out the image like this :

Replace ImageLine($img, $x1, $y1, $x2, $y2, $color) with :
ImageRectangle($img, $x1, $y1, $x2, $y2, $color); if you want to create rectangle.

ImageFilledRectangle($img, $x1, $y1, $x2, $y2, $color); if you want to create filled rectangle.

$points = array($x1, $y1, $x2, $y2, $x3, $y3);

ImagePolygon($img, $points, count($points)/2, $color); if you want to draw a polygon.

$points = array($x1, $y1, $x2, $y2, $x3, $y3); 
ImageFilledPolygon($img, $points, count($points)/2, $color);  if you want to draw filled polygon.

Thanks....

Advertisemen