请问一个PHP操作MYSQL的有关问题

请教一个PHP操作MYSQL的问题

PHP code

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function writeLeft()
{
    $retArray = array();
    [color=#FF0000]$sql = "select id,name,strr from jh_lanmu";[/color]
    $result = mysql_query($sql,$conn);
    while($myrow = mysql_fetch_array($result,MYSQL_BOTH))
    {
        $retArray[] = $myrow;
    }
    mysql_free_result($result);
    foreach($retArray as $tmp)
    {
        echo '

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