Are there any built-in PHP functions for handling CSV files?

Yes, PHP provides built-in functions for handling CSV files. One commonly used function is `fgetcsv()` which reads a line from an open file and parses it as CSV fields. Another useful function is `fputcsv()` which formats a line as CSV and writes it to an open file. These functions make it easy to read from and write to CSV files in PHP. 

// Open the CSV file for reading
$handle = fopen('data.csv', 'r');

// Read and output each line as CSV fields
while (($data = fgetcsv($handle)) !== false) {
    print_r($data);
}

// Close the file
fclose($handle);

Keywords

PHP CSV files built-in functions handling libraries

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