finding id on page

[rpjd]

User submits 1 or more refrerences via a form.  On the action page I want to check if any id's on the page match any values submitted in $_POST.

$Ref = $_POST['Ref'];
$source = file_get_contents( 'E:/wamp/www/Project/File.php' );
$document = new DOMDocument;
$document->validateOnParse = true;
$document->LoadHTML($source);
for($i=0; $i<count($Ref); $i++)
{
$ID = $document->getElementById('$Ref[$i]');
}

I have a table on the source page with the same id as a reference contained in $Ref, but getElementById is not seeing/recognsing it.  No idea why not.

 

 

[fugix]

most likely because you are trying to use php with javascript

[rpjd]

How then can I check if an id of a certain value exists on a page that is the same as a submitted form value in $_POST?

[fugix]

where are the id's on your action page coming from?

[rpjd]

$Ref = $_POST['Ref'];

If a table exists on the page whose id is equal to any value in $Ref array, append new row to the table, else create new table whose id is that value.

[fugix]

where are the id's in the already existing tables coming from though?

[rpjd]

As I just eluded to, if a reference is submitted via the form ($_POST['Ref']) for the first time, then no table exists with that id(value) and a table is created with that id(value).  If a reference has been previously submitted, the table does exist and a new row is appended to that table.  What I'm trying to do is parse the html on the page and compare the existing table id's if any with submitted references, then call appropriate javascript to create and append the table/row, depending on the comparison result(s).

[fugix]

okay so you are matching references with references?

[rpjd]

More of less yes, as references are also table id's  References can be '1', '12', '11-1'.

[rpjd]

Just for curiousity sakes, I did file_get_contents() on the file, the file_get_html() on the contents. 

$source = file_get_contents( 'E:/wamp/www/Project/File.php' );
$document = new DOMDocument;
$document->validateOnParse = true; 
$document->file_get_html($source);

Fatal error: Call to undefined method DOMDocument::file_get_html()

[rpjd]

I tried file_get_html on the file insteasd on file_get_contents, but I got the same problem,

Fatal error: Call to undefined method DOMDocument::file_get_html()

Can anyone explain this?