How can PHP be used to read and copy specific lines from a CSV file into a new file?

To read and copy specific lines from a CSV file into a new file using PHP, you can use the fopen function to open the CSV file, read its contents line by line, and then write the specific lines to a new file. You can use functions like fgetcsv to parse the CSV file and determine which lines to copy based on certain conditions. 

$sourceFile = 'source.csv';
$destinationFile = 'destination.csv';
$linesToCopy = [2, 5, 7]; // Specify the line numbers to copy

$source = fopen($sourceFile, 'r');
$destination = fopen($destinationFile, 'w');

if ($source && $destination) {
    $lineNumber = 1;
    while (($data = fgetcsv($source)) !== false) {
        if (in_array($lineNumber, $linesToCopy)) {
            fputcsv($destination, $data);
        }
        $lineNumber++;
    }
    
    fclose($source);
    fclose($destination);
    
    echo 'Specific lines copied successfully.';
} else {
    echo 'Error opening files.';
}

Keywords

PHP CSV file read copy new file

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