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Escape function issue for sticky form data

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Have a form that is used to update, create or delete entries in db. All form fields sticky, but instead of echoing post data I echo values from variables. If update/delete form displays current db values in form field, if new entry they are empty to start off with, but will be sticky for those submissions where the field entries are filled out okay whilst others are not.

My issue now is that upon db submission I use:

$idesc = escape_data($_POST['idesc']);

which now causes the text to be escaped when there is an issue with another form field which is not what I want. What would be best? To move all escape_data bits till after the check that all form fields are filled out okay? Or is there a better alternative?


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