What potential issues can arise when outputting values in CSV format using PHP?

One potential issue that can arise when outputting values in CSV format using PHP is the presence of special characters such as commas or double quotes within the data, which can disrupt the structure of the CSV file. To solve this issue, you can wrap each value in double quotes and escape any existing double quotes within the data by doubling them. 

$data = array(
    array('John Doe', '30,000', 'New York'),
    array('Jane Smith', '25,000', 'San Francisco'),
);

$fp = fopen('output.csv', 'w');

foreach ($data as $fields) {
    fputcsv($fp, $fields);
}

fclose($fp);

Keywords

CSV PHP escaping delimiter encoding

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