How can PHP developers efficiently handle large CSV files to prevent memory issues?

When dealing with large CSV files in PHP, developers can efficiently handle them by using the `fgetcsv` function to read the file line by line instead of loading the entire file into memory at once. This approach helps prevent memory issues by processing the file incrementally without storing the entire contents in memory. 

$filename = 'large_file.csv';
$handle = fopen($filename, 'r');

while (($data = fgetcsv($handle)) !== false) {
    // Process each row of data here
}

fclose($handle);

Keywords

PHP CSV files memory management fgetcsv SplFileObject

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