Why Do Random Characters Appear When Displaying MySQL BLOB Images in PHP with Additional Text?

Trouble Displaying Images Stored in MySQL BLOB with PHP

When attempting to display an image stored in a MySQL database as a BLOB using the provided PHP code, users may encounter issues if any additional text is echoed before or after the image. Instead of the image displaying, random characters will appear.

Explanation:

As per the given solution, this behavior arises because the browser misinterprets text echoed before or after the image data as part of the image itself. This results in an error and prevents the intended output.

Solution:

To correctly display both the image and additional text, convert the image data into Base64 format and embed it within an HTML img tag:

<code class="php">echo '<img src="data:image/jpeg;base64,' . base64_encode( $row['imageContent'] ) . '" />';
echo 'Hello world.';</code>

Additional Notes:

While this approach resolves the display issue, it's important to note that embedding images using data URIs has drawbacks:

• It cannot be cached, making it undesirable for frequently used images.
• It can be slow, particularly on mobile devices.

Refer to the caniuse documentation for further information on data URIs.

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