The image cannot be displayed because it contains errors

You should output only the image. You are outputting a bunch of tags. Specifically

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 

    <title></title>
</head>
<body>

and then the image as a binary. If you want to see this, wget the page from your server and try opening it in an editor. Your code should start at the <?php.

Removing the header gets rid of the notification to the client that this is an image so it will try out print it out as text.


You must not output anything before header(). Just start your document with <?php (as the first file characters), followed by the code for displaying the image. Skip the HTML tags. Do not even write a single blankline before header().

If you want to display an image inside the html document of yours, you must do it in two files. One, call it for example image.php, containing only the PHP code including the header. The second file, call it show.php or show.html, includes the HTML code you like, including <img src="image.php" alt="Your generated image" />.


If you base64 encode the output, you could use the image directly with a Data URI scheme. 

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>

        <title></title>
    </head>
    <body>
        <?php

        $myImage = imagecreate(200, 100);
        $myGray = imagecolorallocate($myImage, 204, 204, 204);
        $myBlack = imagecolorallocate($myImage, 0, 0, 0);
        imageline($myImage, 15, 35, 120, 60, $myBlack);
        ob_start();
        imagepng($myImage);
        printf('<img src="data:image/png;base64,%s"/>', 
                base64_encode(ob_get_clean()));

        imagedestroy($myImage);
        ?>
    </body>
</html>

Note that Data URIs are not supported by all browsers (guess which).


While trying to output a jpg of a Facebook profile-picture from their Graph API with PHP, I noticed that if the PHP file is saved with UTF-8 encoding - this error was returned, but if the file was saved with ANSI encoding - then it worked OK.

Tags:

Php

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