The following script was used:

<?php
require_once 'Zend/Db/Adapter/Db2.php';
$db = new Zend_Db_Adapter_Db2(
array(
'username'=>"LOUISA",
'password'=>"*******",
'dbname'=>"xxxxxx")
);

$db->insert("animals",Array("a"=>"Serg ","b"=>"Just a","c"=>"12345"));
$v=$db->fetchRow("select * from animals where a='Serg '");
var_dump($v);

It fails with the following result:

[01-Apr-2008 07:37:45] PHP Warning:  db2_prepare(): Statement Prepare Failed in /usr/local/Zend/ZendFramework/library/Zend/Db/Statement/Db2.php on line 64
[01-Apr-2008 07:37:45] PHP Fatal error:  Uncaught exception 'Zend_Db_Statement_Db2_Exception' with message '"animals" in LOUISA type *FILE not found. SQLCODE=-204' in /usr/local/Zend/ZendFramework/library/Zend/Db/Statement/Db2.php:72
Stack trace:
#0 /usr/local/Zend/ZendFramework/library/Zend/Db/Statement.php(109): Zend_Db_Statement_Db2->_prepare('INSERT INTO "an...')
#1 /usr/local/Zend/ZendFramework/library/Zend/Db/Adapter/Db2.php(199): Zend_Db_Statement->__construct(Object(Zend_Db_Adapter_Db2), 'INSERT INTO "an...')
#2 /usr/local/Zend/ZendFramework/library/Zend/Db/Adapter/Abstract.php(395): Zend_Db_Adapter_Db2->prepare('INSERT INTO "an...')
#3 /usr/local/Zend/ZendFramework/library/Zend/Db/Adapter/Abstract.php(474): Zend_Db_Adapter_Abstract->query('INSERT INTO "an...', Array)
#4 /usr/local/Zend/ZendFramework/t1.php(10): Zend_Db_Adapter_Abstract->insert('animals', Array)
#5 {main}
  thrown in /usr/local/Zend/ZendFramework/library/Zend/Db/Statement/Db2.php on line 72

var_dump() within Db2.php just before db2_prepare call gives the following result:

string(54) "INSERT INTO "animals" ("a", "b", "c") VALUES (?, ?, ?)"

The following script works OK:

$conn = db2_connect("xxxxxx", "LOUISA", "*******");

if ($conn) {
    echo "Connection succeeded.
";
}
else {
    echo "Connection failed.
";
    exit;
}

$r=db2_prepare($conn,'insert into animals (a,b,c) values (?,?,?)');
$v=db2_execute($r,Array('a'=>'A1','b'=>'B1','c'=>'C1'));