How to Fix 'Invalid Image' Errors When Converting Base64 Strings to Image Files?

Converting a Base64 String to an Image File: Resolving Invalid Image Errors

When attempting to convert a Base64 string to an image file, you may encounter issues resulting in an invalid image. This error stems from the presence of additional data within the encoded contents, specifically "data:image/png;base64," which must be removed prior to decoding.

To resolve this issue, remove "data:image/png;base64," from the Base64 string before decoding it:

function base64_to_jpeg($base64_string, $output_file) {
    // open the output file for writing
    $ifp = fopen($output_file, 'wb'); 

    // split the string on commas
    $data = explode(',', $base64_string);

    // we could add validation here with ensuring count( $data ) > 1
    fwrite($ifp, base64_decode($data[1]));

    // clean up the file resource
    fclose($ifp); 

    return $output_file; 
}

This updated function ensures that only the pure Base64 encoded image data is decoded, allowing for the successful conversion of the string to an image file.

The above is the detailed content of How to Fix 'Invalid Image' Errors When Converting Base64 Strings to Image Files?. For more information, please follow other related articles on the PHP Chinese website!