how to create image and header it in PHP? - php

Question

I have one problem with PHP create image. What is wrong with my following code?
<?php
$filename = 'play';
$img = "http://www.slcentral.com/ipod-mp3-player/5.JPG";
$image = imagecreatefromjpeg($img);
$cleft = 0;
$ctop = 45;
$canvas = imagecreatetruecolor(480, 270);
imagecopy($canvas, $image, 0, 0, $cleft, $ctop, 480, 360);
$image = $canvas;
$imageWidth = imagesx($image);
$imageHeight = imagesy($image);
// ADD THE PLAY ICON
$play_icon = "f-play.png";
$logoImage = imagecreatefrompng($play_icon);
imagealphablending($logoImage, TRUE);
$logoWidth = imagesx($logoImage);
$logoHeight = imagesy($logoImage);
// CENTER PLAY ICON
$left = round($imageWidth / 2) - round($logoWidth / 2);
$top = round($imageHeight / 2) - round($logoHeight / 2);
// CONVERT TO PNG SO WE CAN GET THAT PLAY BUTTON ON THERE
imagecopy( $image, $logoImage, $left, $top, 0, 0, $logoWidth, $logoHeight);
imagepng( $image, $filename .".png", 9);
// MASHUP FINAL IMAGE AS A JPEG
$input = imagecreatefrompng($filename .".png");
$output = imagecreatetruecolor($imageWidth, $imageHeight);
$white = imagecolorallocate($output, 255, 255, 255);
imagefilledrectangle($output, 0, 0, $imageWidth, $imageHeight, $white);
imagecopy($output, $input, 0, 0, 0, 0, $imageWidth, $imageHeight);
// OUTPUT TO 'i' FOLDER
header("Content-type: image/jpeg");
imagejpeg($output, $filename . ".jpg", 95);
// UNLINK PNG VERSION
#unlink($filename .".png");
die();
?>
Above code is create one image from giving url and add play icon to it. And I want to access to http://coolrss.com/create-img.php it will show image with play icon.
Please help!

Answer 1

Make sure the path has the right permission or you will get:
PHP Warning: imagepng(): Unable to open 'play.png' for writing: Permission denied in /var/www/coolrss/public_html/create-img.php on line 32
Make sure you have installed GD.
Start your code with this header (after the php tag (<?php))
header("Content-Type: image/jpeg");
At the end (last line) add
imagejpeg($output, NULL, 100);
Your code looks like this now:
<?php
header("Content-Type: image/jpeg");
$filename = 'play';
$img = "http://www.slcentral.com/ipod-mp3-player/5.JPG";
$image = imagecreatefromjpeg($img);
$cleft = 0;
$ctop = 45;
$canvas = imagecreatetruecolor(480, 270);
imagecopy($canvas, $image, 0, 0, $cleft, $ctop, 480, 360);
$image = $canvas;
$imageWidth = imagesx($image);
$imageHeight = imagesy($image);
// ADD THE PLAY ICON
$play_icon = "f-play.png";
$logoImage = imagecreatefrompng($play_icon);
imagealphablending($logoImage, TRUE);
$logoWidth = imagesx($logoImage);
$logoHeight = imagesy($logoImage);
// CENTER PLAY ICON
$left = round($imageWidth / 2) - round($logoWidth / 2);
$top = round($imageHeight / 2) - round($logoHeight / 2);
// CONVERT TO PNG SO WE CAN GET THAT PLAY BUTTON ON THERE
imagecopy( $image, $logoImage, $left, $top, 0, 0, $logoWidth, $logoHeight);
imagepng( $image, $filename .".png", 9);
// MASHUP FINAL IMAGE AS A JPEG
$input = imagecreatefrompng($filename .".png");
$output = imagecreatetruecolor($imageWidth, $imageHeight);
$white = imagecolorallocate($output, 255, 255, 255);
imagefilledrectangle($output, 0, 0, $imageWidth, $imageHeight, $white);
imagecopy($output, $input, 0, 0, 0, 0, $imageWidth, $imageHeight);
imagejpeg($output, NULL, 100);
Screenshot - Works for me