使用PDO查询嵌套在while循环中的Foreach

Question

To trim the fat so-to-speak in my script I decided to use 1 PDO prepare to span an array of predefined tables. The PDO executes in a while loop and within the while loop there is a foreach to build the output of each result set.

This is code for a search. The script currently searches 3 tables for results (through the while iterations). We will call them tables a, b, and c. For the tested search it finds 2 results in table a, 0 in table b, and 1 in table c.

Though it finds a total of 3 results it only displays 2. One from table 'a' and one from table 'c'. The script is not building the result from the second find in the table 'a'.

I have looked it over until my eyes bleed and searched for maybe something I have wrong, I cant figure it out. Any ideas of what is wrong with this code?

// --- Build an array of places to search
$tableArray = array("services", "webPages", "dsiu");
$tableCount = count($tableArray);
$count = "0";
$resCount = "0";

$result = "";
while ($tableCount > $count) {
    // -- Search tables in the array for matches
    $quotedString = $db->quote($searchString);
    $qSQL = "SELECT title, ldesc, SUM(MATCH(title, sdesc, ldesc) AGAINST(:string IN BOOLEAN MODE)) AS score FROM ".$tableArray[$count]." WHERE MATCH (title, sdesc, ldesc) AGAINST (:string IN BOOLEAN MODE) ORDER BY score DESC";
    $q = $db->prepare($qSQL);
    $q->execute(array(':string'=>$quotedString));

    // -- keep a count of the results
    $rowCount = $q->rowCount();

    if ($rowCount > 0) {
        $resCount = $resCount + $rowCount;

        // -- build result html
        $html = $q->fetchAll(PDO::FETCH_ASSOC);
        foreach ($html as $row) {

            // --- Clean the results for display
            $desc = cleanURL($row['ldesc']);
            $desc = str_ireplace($searchString, '<b><font color="green">'.$searchString.'</font></b>', $desc);
            $desc = substr($desc, 0, 300)."...";

            $result .= "<font color='red'><b>".$row['title']."</b></font><br>".$desc."<br><br>";

        }
    }

    $count++;
}

Answer 1

Thanks @dan08. I added a if ($row['score'] != null) { to the foreach . Also discovered that SUM() in the query was removing what should have been results.

This is now working with the changes.