What are the potential pitfalls of using array_diff to compare two text files in PHP?

Using array_diff to compare two text files in PHP may not work as expected because it compares arrays based on their values, not the contents of the files. To properly compare text files, you should read the contents of the files into strings and then compare them. This ensures an accurate file comparison. 

$file1 = file_get_contents('file1.txt');
$file2 = file_get_contents('file2.txt');

if ($file1 === $file2) {
    echo "The files are identical.";
} else {
    echo "The files are different.";
}

Keywords

array_diff text files comparison PHP pitfalls

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