PHP export MySQL data to Excel file

PHP export MySQL data to Excel file reprint

Often encounter need to export data from the database to Excel file, with some open-source class library, such as Phpexcel, it is quite easy to implement, but the support of a lot of data is not good, it is easy to reach the PHP memory usage limit. The method here is to use the Fputcsv write CSV file method, directly to the browser output Excel file.

?

1

<br><!--?phpOutput the header of the Excel file, you can change the user.csv to the filename you want (' Content-type:application/vnd.ms-excel '); header (' Content-disposition: Attachment;filename= "User.csv"); header (' cache-control:max-age=0 '); //Get data from the database, in order to save memory, do not read the data to memory at once, A row in a clause can be read $sql = ' select * from tbl where ... '; $stmt = $db--->query ($sql); //Open PHP file handle, php://output indicates direct output to browser $f p = fopen (' php://output ', ' a '); //Output Excel column name information $head = Array (' name ', ' gender ', ' age ', ' Email ', ' phone ', ' ... '); foreach ($head as $i = $v) {   //CSV Excel support GBK encoding, be sure to convert otherwise garbled     $head [$i] = iconv (' utf-8 ', ' GBK ', $v); } //Writes data through Fputcsv to file handle Fputcsv ($FP, $head); //Counter $cnt = 0;//every $limit line, refresh output buffer, not too big, not too small $limit = 100000; //row-by-line extraction of data without wasting memory while ($row = $stmt->fetch (zend_db::fetch_num)) {      $cnt + +;    if ($limit = = $cnt) {//Refresh output buffer to prevent problems caused by too much data         ob_ Flush ();        flush (); &NBSP;&Nbsp;      $cnt = 0;   }      foreach ($row as $i = > $v) {        $row [$i] = iconv (' utf-8 ', ' GBK ', $v);   } & nbsp;  fputcsv ($fp, $row);}