How Can I Output an Image in PHP?

Outputting an Image in PHP

Outputting an image to a browser in PHP is a straightforward task. Here's how you can do it:

1. Set the Content-Type Header:

   Specify the MIME type of the image using the header() function. For example:

   header('Content-Type: image/jpeg');

   Copy after login

2. Set the Content-Length Header:

   Indicate the size of the image file in bytes using the filesize() function:

   header('Content-Length: ' . filesize($file));

   Copy after login

3. Output the Image File:

   Use the readfile() function to read and output the contents of the image file:

   readfile($file);

   Copy after login

Here's an example code snippet that puts it all together:

$file = '../image.jpg';
$type = 'image/jpeg';
header('Content-Type:'.$type);
header('Content-Length: ' . filesize($file));
readfile($file);

By following these steps, you can output an image to the browser, allowing the user to view or download it.

The above is the detailed content of How Can I Output an Image in PHP?. For more information, please follow other related articles on the PHP Chinese website!