PHP/Graphics Image/imagecolorallocate

Allocate image color

 
<?php
    $image = imagecreatefrompng("button.png");
    $hotpink = imagecolorallocate($image, 255, 110, 221);
    $rotated_image = imagerotate($image, 50, $hotpink);
    header("content-type: image/png");
    imagepng($rotated_image);
    imagedestroy($image);
    imagedestroy($rotated_image);
?>

A simple image using a single color (red)

 
<?php
    $img = imagecreate(200, 200);
    imagecolorallocate($img, 0xFF,0,0);
    header("Content-type: image/png");
    imagepng($img);
?>

Creating and Using Colors

 
<?php
    $animage = imagecreate (500, 500);
    $white = imagecolorallocate ($animage, 255, 255, 255);
    $black = imagecolorallocate ($animage, 0x00, 0x00, 0x00);
    imagefilledrectangle ($animage, 0, 0, 500, 500, $black);
    $blue = imagecolorallocate ($animage, 0, 0, 255);
    $green = imagecolorallocate ($animage, 0, 255, 0);
    $title = "title";
    imagestring ($animage, 4, 50, 5, $title, $blue);
    $copy = "information";
    imagestring ($animage, 4, 100, 25, $copy, $green);
      
    imagepng ($animage);
    header ("Content-type: image/png");
    imagedestroy ($animage);
?>