How to Output an Image in PHP?

Outputting an Image in PHP

In PHP, displaying an image in a web browser involves sending the image data along with appropriate headers. To achieve this, you can follow these steps:

1. Determine the Image File and MIME Type:

• Assign the path to the image file to the $file variable (e.g., '../image.jpg').
• Specify the MIME type of the image (e.g., 'image/jpeg') in the $type variable.

2. Send Content Headers:

• header('Content-Type:'.$type); sets the MIME type to indicate the type of data being output.
• header('Content-Length: ' . filesize($file)); specifies the size of the file being sent.

3. Read and Output the Image Data:

• readfile($file); reads the content of the image file and sends it to the output buffer.

Example:

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

By using this code, you can output an image directly to the browser, allowing it to be displayed on the web page.

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