title: zend helper Db_NoRecordExists for multiple table check
body: <p>I want to check mobile number uniqueness in my two table ..I have added this code but It checking only second one...Is it any other way to validated this in form..</p>
  
  <pre><code>$this-&gt;addElement('text', 'mobilenumber', array(`enter code here`
              'filters'    =&gt; array('StringTrim'),
              'validators' =&gt; array`enter code here`(
                                  array('Db_NoRecordExists', true, array('table' =&gt; 'beroe_user', 'field' =&gt; 'mobilenumber', 'messages' =&gt; array(
                                     'recordFound' =&gt; 'mobilenumber already exists'
                                  ))),
                                  array('Db_NoRecordExists', true, array('table' =&gt; 'beroe_user', 'field' =&gt; 'mobilenumber', 'messages' =&gt; array(
                                     'recordFound' =&gt; 'admin already exists'
                                  ))),
              ),
              // 'required'   =&gt; true,
              'label'      =&gt; 'Phone ',
              'maxlength'  =&gt; '15'
          ));
  </code></pre>