How do I add a Font Awesome icon to input field?

Question

How do I use the search icon included in Font Awesome for input? I have a search feature on my site (based on PHPmotion), that I want to use for the search.

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Answer 1

For those, who are wondering how to get FontAwesome icons to drupal input, you have to decode_entities first like so:

$form['submit'] = array(
'#type' => 'submit',
'#value' => decode_entities(''), // code for FontAwesome trash icon
// etc.
);