How to get custom trigger result when insert

Question

I set a trigger before insert, if the result was $aa = 50;
how to get $aa?
it doesn't work
$ins_testtable->addColumn("t_num", "NUMERIC_TYPE", "VALUE", $aa);

Answer 1

I tried this one, actually, {GLOBALS.variable_name} is one of mark-up language,I add echo $a this time, after submit, $a appear on the page, so I think "definea trigger" has been executed successfully, but still got error message
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<br />http://uploads.screenshot-program.com/my.php?image=upl2682569831.jpg
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<br />code
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<br /><?php require_once('Connections/conndb.php'); ?>
<br /><?php<br />// Load the common classes<br />require_once('includes/common/KT_common.php');<br /><br />// Load the tNG classes<br />require_once('includes/tng/tNG.inc.php');<br /><br />// Make a transaction dispatcher instance<br />$tNGs = new tNG_dispatcher("");<br /><br />// Make unified connection variable<br />$conn_conndb = new KT_connection($conndb, $database_conndb);<br /><br />//start definea trigger<br />function definea(&$tNG) {<br />global $a;<br />$a = 100;<br />}<br />//end definea trigger<br /><br />// Make an insert transaction instance<br />$ins_testtable = new tNG_insert($conn_conndb);<br />$tNGs->addTransaction($ins_testtable);<br />// Register triggers<br />$ins_testtable->registerTrigger("STARTER", "Trigger_Default_Starter", 1, "POST", "ins");<br />$ins_testtable->registerTrigger("BEFORE", "definea", 50);<br />// Add columns<br />$ins_testtable->setTable("testtable");<br />$ins_testtable->addColumn("t_name", "STRING_TYPE", "POST", "t_name");<br />$ins_testtable->addColumn("t_num", "NUMERIC_TYPE", "VALUE", "{GLOBALS.a}");<br />$ins_testtable->setPrimaryKey("t_id", "NUMERIC_TYPE");<br /><br />// Execute all the registered transactions<br />$tNGs->executeTransactions();<br /><br />// Get the transaction recordset<br />$rstesttable = $tNGs->getRecordset("testtable");<br />$row_rstesttable = mysql_fetch_assoc($rstesttable);<br />$totalRows_rstesttable = mysql_num_rows($rstesttable);<br />?>
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<script src="includes/common/js/base.js" type="text/javascript"></script>
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<script src="includes/common/js/utility.js" type="text/javascript"></script>
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<script src="includes/skins/style.js" type="text/javascript"></script>
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<br /><?php echo $a; ?>
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<form id="form1" name="form1" method="post" action="">
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<label for="t_name">tname</label>
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<input type="text" name="t_name" id="t_name" />
<br /> <?php<br /> echo $tNGs->getErrorMsg();<br />?>
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<input type="submit" name="ins" id="ins" value="submit" />
<br /></form>
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