在php中使用我自己的头创建并从数组中下载csv

I have very simple array which I want to export into a CSV file, which I alomost done with the help of this How to create and download a csv file from php script?

But I want my own header at the top of the file which is also a array, created myself and looks like this-

           $header = array(
                    'order_id'                => 'order_id',
                    'firstname'               => 'firstname',
                    'lastname'                => 'lastname',
                    'email'                   => 'email',
                    'telephone'               => 'telephone',
                    'fax'                     => 'fax',
                    'product_id'              => 'product_id',
                    'name'                    => 'name',
                    'model'                   => 'model',
                    'quantity'                => 'quantity',
                    'price'                   => 'price',
                    'currency_value'          => 'total',
                    'order_status'            => 'order_status'
                    );

my original export array is -

 Array
 (
[0] => Array
    (
        [order_id] => 195
        [firstname] => satyendra
        [lastname] => singh
        [email] => satyendra.singh43@gmail.com
        [telephone] => 9818077908
        [fax] => 
        [product_id] => 7086
        [name] => Bachini  Casual Shoes  1511-Navy Blue
        [model] => 1511-Navy Blue
        [quantity] => 1
        [price] => 499.00
        [currency_value] => 499.00
        [order_status] => 
    )

   [1] => Array
    (
        [order_id] => 196
        [firstname] => satyendra
        [lastname] => singh
        [email] => satyendra.singh43@gmail.com
        [telephone] => 9818077908
        [fax] => 
        [product_id] => 7086
        [name] => Bachini  Casual Shoes  1511-Navy Blue
        [model] => 1511-Navy Blue
        [quantity] => 1
        [price] => 499.00
        [currency_value] => 499.00
        [order_status] => 
    )

 )

export is working fine I just want to add this header at the top of my original array so that when I export this I get first row of array as header in my csv file. can any body have some trick to achieve that result

You may please try below code.

Assuming you are using code you mentioned - How to create and download a csv file from php script? , please pass your $header array as fourth parameter to function array_to_csv_download.

Then just before export array is written, header array is written to csv file.

function array_to_csv_download($array, $filename = "export.csv", $delimiter=";",$header) {
    // open raw memory as file so no temp files needed, you might run out of memory though
    $f = fopen('php://memory', 'w');
    fputcsv($f, $header, $delimiter); // write $header array first to top of csv file
    // loop over the input array
    foreach ($array as $line) { 
        // generate csv lines from the inner arrays
        fputcsv($f, $line, $delimiter); 
    }
    // reset the file pointer to the start of the file
    fseek($f, 0);
    // tell the browser it's going to be a csv file
    header('Content-Type: application/csv');
    // tell the browser we want to save it instead of displaying it
    header('Content-Disposition: attachment; filename="'.$filename.'";');
    // make php send the generated csv lines to the browser
    fpassthru($f);
}