How can the use of headers like 'Content-type: image/jpeg' in PHP impact the display of images retrieved from a database in a web browser?

When retrieving images from a database in PHP, setting the correct `Content-type` header is crucial for the web browser to interpret the data correctly. If the `Content-type` is not set or set incorrectly, the browser may not display the image properly or at all. To ensure images are displayed correctly, make sure to set the `Content-type` header to match the image type being retrieved. 

// Retrieve image data from the database
$imageData = // Your code to retrieve image data from the database

// Set the Content-type header to image/jpeg (Change this based on the image type)
header('Content-type: image/jpeg');

// Output the image data
echo $imageData;

Keywords

PHP headers Content-type image/jpeg database.

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