problem with single quote in input field

Hello,

I have this value in database : test'test

When I try to display the text in a field I get this in the input field : test'test

If I display my variable in the html flux i get : test'test width no problem.

My code :

echo $projets['mo'].'<br>'; // display test'test
$field=array('type'=>'text', 'name'=>'mo','value'=>set_value('mo',$projets['mo']), 'size'=>'64','maxsize'=>'255');
echo form_input($field); // display test'test

Please help,