用php将mysql数据表转换为excel文件格式

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<?php
// define database parameter

$db_server = "localhost";
$db_username = "root";
$db_password = "123";
$db_dbname = "windlike";
$db_tblname = "bank";

// connect database

$connect = @mysql_connect($db_server, $db_username, $db_password) or die("couldn't connect.");
$db = @mysql_select_db($db_dbname, $connect) or die("couldn't select database.");

// set header infomation

$file_type = "vnd.ms-excel";
$file_ending = "xls";
header("content-type: application/$file_type");
header("content-disposition: attachment; filename=$db_tblname.$file_ending");
header("pragma: no-cache");
header("expires: 0");

// export data to excel

$now_date = date('y-m-d h:i');
$title = "数据库名:$db_dbname, 数据表:$db_tblname, 备份日期:$now_date";
echo("$title\n");

$sql = "select * from $db_tblname";
$alt_db = @mysql_select_db($db_dbname, $connect) or die("couldn't select database");
$result = @mysql_query($sql,$connect) or die(mysql_error());

$sep = "\t";
for ($i = 0; $i < mysql_num_fields($result); $i++) {
    echo mysql_field_name($result,$i) . "\t";
}
print("\n");
$i = 0;
while($row = mysql_fetch_row($result)) {
    $schema_insert = "";
    for($j=0; $j<mysql_num_fields($result);$j++) {
        if(!isset($row[$j]))
            $schema_insert .= "null".$sep;
        elseif ($row[$j] != "")
            $schema_insert .= "$row[$j]".$sep;
        else
            $schema_insert .= "".$sep;
    }
    $schema_insert = str_replace($sep."$", "", $schema_insert);
    $schema_insert .= "\t";
    print(trim($schema_insert));
    print "\n";
    $i++;
}
return (true);
?>