Extract comment property from result of exif_read_data()

How do I return the comment property from exif_re开发者_JS百科ad_data

link:

http://www.php.net/manual/en/function.exif-read-data.php

---

$comments = exif_read_data('tests/test2.jpg', 'COMMENT', true);

foreach ($comments as $name => $val) {
      echo "$name: $val<br />\n";
}