Converting MySQL Queries to CSV in PHP
Exporting data from MySQL databases into CSV format is a common task. PHP offers various methods to achieve this. One efficient approach that avoids intermediate file creation is using the SELECT * INTO OUTFILE statement:
SELECT * INTO OUTFILE "c:/mydata.csv" FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY "\n" FROM my_table;
Alternatively, you can use the following PHP code:
$select = "SELECT * FROM table_name"; $export = mysql_query($select) or die("Sql error : " . mysql_error()); $fields = mysql_num_fields($export); for ($i = 0; $i < $fields; $i++) { $header .= mysql_field_name($export, $i) . "\t"; } while ($row = mysql_fetch_row($export)) { $line = ''; foreach ($row as $value) { if (!isset($value) || $value == "") { $value = "\t"; } else { $value = str_replace('"', '""', $value); $value = '"' . $value . '"' . "\t"; } $line .= $value; } $data .= trim($line) . "\n"; } $data = str_replace("\r", "", $data); if ($data == "") { $data = "\n(0) Records Found!\n"; } header("Content-type: application/octet-stream"); header("Content-Disposition: attachment; filename=your_desired_name.xls"); header("Pragma: no-cache"); header("Expires: 0"); print "$header\n$data";
Both methods retrieve data from the MySQL database and convert it directly to CSV format without using temporary files.
The above is the detailed content of How Can I Efficiently Export MySQL Data to CSV Using PHP?. For more information, please follow other related articles on the PHP Chinese website!