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Help to incorporate recaptcha to existing form

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Im hoping I can get some help with this - as it is a big problem for me.


I am trying to add googles recaptcha code to my existing php page with a comment form...


This is the code I have to place before the submit button
And This is my current form code from a php file (I've stripped out table layout tags for clarity)
<form action="{$settings.dburl}/index.php?act=comments&c=post&file={$file.file_id}" method="post">
        <input type="text" name="subject" id="subject" size="40" maxlength="150" />
        <textarea name="comment" id="comment" rows="12" style="width: 95%"></textarea>
        <input type="submit" value="{#post_comment#}" onclick="postComment({$file.file_id}); return false;" />
I am confused about what I should replace the YourOnSubmitFn with?
Any help would be greatly appreciated. 
Edited by R0CKY

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Have you read the documentation? The callback must be a JavaScript function which is called when the user tries to solve the CAPTCHA and has a single parameter for the user's response (g-recaptcha-response). This response must be sent to the server along with the actual form data and then verified.


Your system for form submission is rather strange, though, so I cannot comment on how to actually implement the function.

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This is the difficulty I have, I have no php or javascript experience and as you have spotted, I am using a rather old script. I usually muddle through with trial and error, however I am struggling now.


I'll figure it out though.


Thanks for the pointers.

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