How can the use of glob() or DirectoryIterator with RegExIterator improve the efficiency of file handling in PHP?

Using glob() or DirectoryIterator with RegExIterator can improve the efficiency of file handling in PHP by allowing you to filter files based on specific criteria without having to loop through all files in a directory. This can significantly reduce the number of files that need to be processed, saving both time and resources. 

// Example code using glob() and RegExIterator to filter files
$files = glob('/path/to/directory/*.txt');
$iterator = new RegexIterator(new ArrayIterator($files), '/^file_\d+\.txt$/');

foreach ($iterator as $file) {
    echo $file . PHP_EOL;
}

Keywords

glob() DirectoryIterator RegExIterator file handling efficiency

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