troubleshooting Question

how to check if there is a DIV enclosing a form element within the conditional PCRE?

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intellisourceFlag for South Africa asked on
PHPRegular Expressions
12 Comments1 Solution475 ViewsLast Modified:
hi, i've just completed a PCRE as follows to retrieve form elements from a form:
$pattern = '#<(form)(?=(?:[^>]*name="([^"]*))?)(?=(?:[^>]*action="([^"]*))?)' .
           '|<(input)(?=(?:[^>]*type="([^"]*))?)(?=(?:[^>]*name="([^"]*))?)(?=(?:[^>]*value="([^"]*))?)(?=(?:[^>]*checked="([^"]*))?)' .
           '|<(textarea)(?=(?:[^>]*name="([^"]*))?)[^>]*>([^<]|<(?!/textarea))*' .
           '|<(select)(?=(?:[^>]*name="([^"]*))?)' .
           '|<(button)(?=(?:[^>]*name="([^"]*))?)(?=(?:[^>]*value="([^"]*))?)#i';
i wish to post this question as a follow-up to the question available at https://www.experts-exchange.com/Programming/Languages/Regular_Expressions/Q_27295097.html#a36497404
now if an element is within a div (parental or any other ancestral level tags) with inline style including "visibility: hidden" or "display: none" how can i detect that (hidden|none|empty string) by adding to the four element pattern's regex?
for example loading the login form on https://lmx.leads360.com/web/Login.aspx - the emailTexbox element is retrieved but does not give any clue as to wether it is displayed/hidden or not.
Array
(
    [0] => Array
        (
            [0] => <form
            [1] => form
            [2] => form1
            [3] => login.aspx
        )

    [1] => Array
        (
            [0] => <input
            [1] => 
            [2] => 
            [3] => 
            [4] => input
            [5] => hidden
            [6] => __VIEWSTATE
            [7] => 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
        )

    [2] => Array
        (
            [0] => <input
            [1] => 
            [2] => 
            [3] => 
            [4] => input
            [5] => hidden
            [6] => __EVENTVALIDATION
            [7] => /wEWBQL7tbDVBgLw0JndDgLi/qahAwKSuuDUCwKCkfPgDOt1y12mZhJ/qB81miBJ4pLiwjLK
        )

    [3] => Array
        (
            [0] => <input
            [1] => 
            [2] => 
            [3] => 
            [4] => input
            [5] => text
            [6] => usernameTextBox
        )

    [4] => Array
        (
            [0] => <input
            [1] => 
            [2] => 
            [3] => 
            [4] => input
            [5] => password
            [6] => passwordTextBox
        )

    [5] => Array
        (
            [0] => <input
            [1] => 
            [2] => 
            [3] => 
            [4] => input
            [5] => text
            [6] => emailTextBox
        )

)
i also need to check for a disabled value, or a parent style hiding the field - to be appended to the same element subarray. how would this be done? here follows the possible hiding of an element via parental inline css.
<div class="dialog" style="position: absolute; visibility: hidden; z-index: 70013; left: 735px; top: 212px;" id="passwordDialog"><div class="header" id="passwordDialog_HeaderSpan">

            Forgot Password
        
</div><div class="content password" id="passwordDialog_InnerSpan">

            <p>Please enter the email address you signed up with and we will send you a new login link.</p>
            <dl>
                <dt>Email:</dt>
                <dd><input type="text" class="bigtextbox" id="emailTextBox" name="emailTextBox" tabindex="0"></dd>
            </dl>
            <div class="buttons submitcancel">
                <a onclick="RequestPasswordReset();" id="submitPasswordRest" class="submit left" tabindex="0">Submit</a>
                <a onclick="passwordDialog.Close();" class="cancel right" tabindex="0">Close</a>
            </div>
        
</div><div class="footer" id="passwordDialog_FooterSpan">

        
</div></div>
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