php操作函数

array_keys($array) //返回所有键名

array_values($array) //返回所有键值

$result=array_reverse($input);       //将数组颠倒，不保留键名
$result_keyed=array_reverse($input,true);    //将数组颠倒，保留键名

array_keys($array,"blue");       //返回值为blue的键名

php导出excel

    $filename="info.xls";//佅~H孾Z举I䷾@个excel彖~G件
    header("Content-Type: application/vnd.ms-execl");
    header("Content-Type: application/vnd.ms-excel; charset=utf-8");
    header("Content-Disposition: attachment; filename=$filename");
    header("Pragma: no-cache");
    header("Expires: 0");
    #excel列名
    echo iconv("utf-8", "gb2312", "绾V住·")."\t";
    echo iconv("utf-8", "gb2312", "妾S佐~M")."\t";
    echo iconv("utf-8", "gb2312", "年齾D")."\t";
    #连接数据库导出数据
    $conn = mysql_connect("127.0.0.1","hello","hello");
    mysql_select_db("machine");
    $sql="select ip,business,service from machine_list";
    $result=mysql_query($sql);
    while($row =mysql_fetch_array($result)){
        echo "\n";
        echo iconv("utf-8", "gb2312", $row['ip'])."\t";
        echo iconv("utf-8", "gb2312", $row['business'])."\t";
        echo iconv("utf-8", "gb2312", $row['service'])."\t";
    }