<?php
$array = array(
'RequestID' => 0,
'ClientName' => null,
'Username' => "\0",
'RequestAssignee' => 0.0,
'Status' => '0',
'Priority' => false,
'Extra' => ''
);
$error = 0;
foreach ($array as $k => $v){
if (empty($v)) {
$error++;
}
}
if ($error == count($array)) {
echo '<li>Please enter a value into at least one of the fields regarding the request you are searching for.</li>';
}else{
echo 'all good';
}