What are the differences between the opendir/readdir/closedir functions and the glob function in PHP?

The opendir/readdir/closedir functions in PHP are used to open a directory, read its contents one by one, and then close the directory once finished. On the other hand, the glob function is used to retrieve an array of files and directories that match a specified pattern. The main difference is that opendir/readdir/closedir functions require manual iteration through the directory contents, while the glob function provides a more convenient way to retrieve matching files. 

// Using glob function to retrieve all PHP files in a directory
$files = glob('path/to/directory/*.php');

foreach ($files as $file) {
    echo $file . "\n";
}

Keywords

opendir readdir closedir glob PHP

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