What are the potential pitfalls or challenges one might face when using the glob function in PHP for file manipulation?

One potential challenge when using the glob function in PHP for file manipulation is that it may return an empty array if no matching files are found. To handle this, you can check if the glob function returns false and then handle this edge case accordingly. 

$files = glob('path/to/files/*.txt');

if ($files === false) {
    echo "No matching files found.";
} else {
    foreach ($files as $file) {
        echo $file . "<br>";
    }
}

Keywords

glob function file manipulation file paths wildcard characters error handling

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