如何使用 PHP 的 glob() 函数按扩展名高效过滤文件？

Efficiently Filtering Files by Extension

Getting a list of files in a directory is a common task, but what if you need to retrieve only files with a specific extension? This can be done efficiently using the glob() function in PHP.

The glob() function takes a pattern as an argument and returns an array of pathnames matching that pattern. To filter files by extension, you can use the wildcard character * followed by the desired extension. For example, to retrieve all .ini files in a directory:

<code class="php">$files = glob("/path/to/folder/*.ini");</code>

This will populate the $files variable with an array of all .ini files in the specified folder.

The glob() function is much more efficient than iterating through the files in a directory and checking the extension of each one manually. This is because glob() uses the operating system's file search capabilities to quickly find all files that match the specified pattern.

By using glob(), you can easily and efficiently filter files by extension, making this a valuable tool for a variety of tasks.

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