How can PHP be used to extract hidden data from JPEG files?

To extract hidden data from JPEG files using PHP, you can use the `exif_read_data()` function to read the metadata embedded in the image file. This metadata can include information such as the camera settings, date and time the photo was taken, and even GPS coordinates. By parsing this metadata, you can extract hidden data from JPEG files. 

$jpegFile = 'image.jpg';

$exifData = exif_read_data($jpegFile);

if($exifData !== false){
    foreach ($exifData as $key => $value){
        echo "$key: $value <br>";
    }
} else {
    echo 'No EXIF data found.';
}

Keywords

PHP JPEG files extract hidden data exif_read_data metadata

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