How to generate csv file from table data and save in specific path?

 A simple way to generate a CSV file from a database table is the "file_put_contents" function. here we are giving an example of this.

Code:

// Given exmaple is relate from drupal query..

function array2csv($data, $delimiter = ',', $enclosure = '"', $escape_char = "\\")

{

    $f = fopen('php://memory', 'r+');

    foreach ($data as $item) {

        fputcsv($f, $item, $delimiter, $enclosure, $escape_char);

    }

    rewind($f);

    return stream_get_contents($f);

}

$data = array();  

$watchdog_results = db_query("SELECT wid,uid,type,message,severity,link,location,referer,hostname,timestamp FROM watchdog")->fetchAll();

if(!empty($watchdog_results)){

// for adding first Header row

$data[] = array(

  'wid',

  'uid',

  'type',

  'message',

  'severity',

  'link',

  'location',

  'referer',

  'hostname',

  'timestamp',   

);

// for adding content rows

foreach($watchdog_results as $line){

   $data[] = $line;  

}

}

$array = json_decode(json_encode($data), true);

$csdata = array2csv($array);

file_put_contents('/code/watchdog-report.csv', $csdata);

// here "/code/watchdogcustom-report.csv" is our located file path and filename, you can write filename as you want and also locate in any path.

In Drupal, you can use this code anywhere you want like, in any controller or hook_cron function, etc.

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