php使用指定编码导出mysql数据到csv文件的方法

本文实例讲述了php使用指定编码导出mysql数据到csv文件的方法。分享给大家供大家参考。具体实现方法如下：

    <?php
    /*
     * PHP code to export MySQL data to CSV
     * 
     * Sends the result of a MySQL query as a CSV file for download
     * Easy to convert to UTF-8.
     */

     /*
     * establish database connection
     */

    $conn = mysql_connect('localhost', 'login', 'pass') or die(mysql_error());
    mysql_select_db('database_name', $conn) or die(mysql_error($conn));
    mysql_query("SET NAMES CP1252");
    /* 
     * execute sql query   
     */
    $query = sprintf('SELECT field1,field2 FROM table_name');
    $result = mysql_query($query, $conn) or die(mysql_error($conn));
    /* 
     * send response headers to the browser
     * following headers instruct the browser to treat the data as a csv file called export.csv
     */
    header('Content-Type: text/csv; charset=cp1252');
    header('Content-Disposition: attachment;filename=output.csv');
    /* 
     * output header row (if atleast one row exists) 
     */ 

    $row = mysql_fetch_assoc($result); 
    if ($row) {
      echocsv(array_keys($row));
    }

    /*
     * output data rows (if atleast one row exists)
     */
    while ($row) {
      echocsv($row);
      $row = mysql_fetch_assoc($result);
    }

    /*
     * echo the input array as csv data maintaining consistency with most CSV implementations
     * - uses double-quotes as enclosure when necessary
     * - uses double double-quotes to escape double-quotes
     * - uses CRLF as a line separator
     */

    function echocsv($fields)
    {
      $separator = '';
      foreach ($fields as $field) {
        if (preg_match('/\\r|\\n|,|"/', $field)) {
     $field = '"' . str_replace('"', '""', $field) . '"';
        }
        echo $separator . $field;
        $separator = ',';
      }
      echo "\r\n";
    }
    ?>

希望本文所述对大家的php程序设计有所帮助。