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Why is PHP function odbc_result() yielding an empty string for MS-Access memo fields?

Posted on 2008-06-20
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Last Modified: 2013-12-13
I'm writing PHP code to dynamically show values from a query to an MS-Access database. I'm using the odbc_ group of PHP functions to do this. In the attached snippet, the $name argument references a field-name in the Access database. Now, the actual Access field that's referenced may be a text field (max. 255 characters) or a memo field (max. 65KB). For some reason, when a memo field is referenced, its value shows up as an empty string when I use function odbc_result(). By contrast, Access text fields are fetched with no problem, using the same line of code in my snippet below. How do I get the memo field values returned from function odbc_result()?
// Part of PHP code that builds an HTML string to echo to the web browser.
// The field $name may reference a an Access text or memo field.
$row .= odbc_result($docResultId, $name);

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Question by:bob2ee
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Rurne earned 375 total points
ID: 21834316
By default, odbc_result doesn't know how to convert MEMO to BLOB or CLOB.  You'll need to use odbc_longreadlen() to set how "big" the column is in order to read the memo field appropriately.
http://us2.php.net/manual/en/function.odbc-longreadlen.php
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Author Closing Comment

by:bob2ee
ID: 31469265
I apologize, but it turned out that the odbc_result() behaviour was being affected by odbc_fetch_row(). I.e., the latter function was the cause of my problem. SO I suggest you delete the entire question from the Experts Exchange system. Again, my apologies to EE and expert Rurne.
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