How Can I Efficiently Retrieve File Names from a Directory in PHP?

Obtaining File Names from a Directory Using PHP

When working with directories in PHP, it is a common task to retrieve the names of all files contained within them. While utilizing the opendir() and readdir() functions can effectively achieve this, certain implementations may encounter an issue where only "1" is returned for each detected file.

This behavior stems from the readdir() function's default operation of iterating through the files in the directory and returning their index numbers instead of their actual names. To rectify this, an alternative approach using the glob() function is recommended.

The glob() function accepts a wildcard pattern and recursively searches the specified directory path, matching and returning all files that satisfy the pattern. Utilizing a wildcard such as *.* ensures that all files with any extension within the directory are captured. The returned values are an array of file paths, which can be iterated over to extract the desired file names.

Here's an example that employs glob() to retrieve file names from a directory:

foreach (glob($log_directory . '/*.*') as $file) {
    // Process file name
}

By utilizing glob(), you can effectively obtain the names of all files in a directory, eliminating the "1" issue encountered with readdir(). This approach is efficient, robust, and适用于大多数场景。

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