save csv file on local machine using php

Question

I have array and using that it makes a CSV but it is not saving it locally.

What should I change here?

Here is an array with code. Which is not working to create CSV on local system

$example_data = array(
  array('ID' => 1,'booktitle' => 'Quarter Share', 'author' => 'Nathan Lowell',
        'isbn' => '978-0982514542'),
  array('ID' => 2, 'booktitle' => '7th Son: Descent','author' => 'J. C. Hutchins',
        'isbn' => '0312384378'),
  array('ID' => 3, 'booktitle' => 'Shadowmagic', 'author' => 'John Lenahan',
        'isbn' => '978-1905548927'),
  array('ID' => 4, 'booktitle' => 'The Crown Conspiracy', 'author' => 'Michael J. Sullivan',
        'isbn' => '978-0979621130'),
  array('ID' => 5, 'booktitle' => 'Max Quick: The Pocket and the Pendant', 'author' => 'Mark Jeffrey',
        'isbn' => '978-0061988929'),
  array('ID' => 6, 'booktitle' => 'Jack Wakes Up: A Novel', 'author' => 'Seth Harwood',
        'isbn' => '978-0307454355')
);

function outputCsv($fileName, $assocDataArray)
{
    if(isset($assocDataArray['0'])){
        $fp = fopen('file.csv', 'w');
        fputcsv($fp, array_keys($assocDataArray['0']));
        foreach($assocDataArray AS $values){
            fputcsv($fp, $values);
            $data[]=$values;
        }

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

        echo 'Data saved to csvfile.csv';

    }
}

Answer 1

I have changed just a bit of your function and is working for me :

function outputCsv($fileName, $assocDataArray)
{
    if(isset($assocDataArray['0'])){
        $fp = fopen($fileName, 'w');
        fputcsv($fp, array_keys($assocDataArray['0']));
        foreach($assocDataArray AS $values){
            fputcsv($fp, $values);
            $data[]=$values;
        }
/*
        $csv_handler = fopen ('file.csv','w');
        fwrite ($csv_handler,$data);
        fclose ($csv_handler);
*/
        fclose($fp); 
        echo 'Data saved to csvfile.csv';

    }
}

outputCsv('test.csv', $example_data);

You were trying to write array type data via fwrite() function and it expects string only. That is why it was generating error.

Answer 2

the fwrite() function doesn't write array directly into a file first you have to do something like this (i edited your function)

function outputCsv($fileName, $assocDataArray)
{
    if(isset($assocDataArray['0'])){
        $data = array();
        $fp = fopen('file.csv', 'w');
        fputcsv($fp, array_keys($assocDataArray['0']));
        foreach($assocDataArray AS $values){
            fputcsv($fp, $values);
            $data[]=$values;
        }

        $csv_handler = fopen ('file.csv','w');
        fwrite ($csv_handler, print_r($data, true));
        fclose ($csv_handler);

        echo 'Data saved to csvfile.csv';

    }
}