I want to use an image for a submit button url to be defined by $pic

I am trying to use a variable image for a submit button the example below works with a fixed image

<input type="image" src="/images/submit.gif" width="1开发者_JAVA技巧20" height="30" border="0" alt="SUBMIT!" />

What I want to do is use $pic instead of /images/submit.gif

any offers ?

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SRC="<?php echo htmlspecialchars($pic); ?>"