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<?php
$data_array = array (
            array ('1','2'),
            array ('2','2'),
            array ('3','6'),
            array ('4','2'),
            array ('6','5')
            );

$csv = "col1,col2 \n";//Column headers
foreach ($data_array as $record){
    $csv.= $record[0].','.$record[1]."\n"; //Append data to csv
    }

$csv_handler = fopen ('csvfile.csv','w');
fwrite ($csv_handler,$csv);
fclose ($csv_handler);

echo 'Data saved to csvfile.csv';