What are some potential pitfalls when reading CSV files in PHP, especially when dealing with large files?

One potential pitfall when reading CSV files in PHP, especially when dealing with large files, is memory consumption. Reading the entire file into memory at once can lead to memory exhaustion. To avoid this, you can read the file line by line using a loop to process each row individually. 

$filename = 'large_file.csv';
if (($handle = fopen($filename, 'r')) !== false) {
    while (($data = fgetcsv($handle)) !== false) {
        // Process each row here
    }
    fclose($handle);
} else {
    echo 'Error opening file';
}

Keywords

fgetcsv memory_limit file handling parsing errors performance bottlenecks

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