Why Does My PHP Code Return '1' Instead of File Names When Using `readdir()`?

Getting File Names in a Directory with PHP: Resolving the '1' Conundrum

In PHP, obtaining the names of files within a directory is a commonly encountered task. However, some may encounter an unexpected issue where file names are returned as '1' instead of their actual names. This conundrum can arise while using the readdir() function with is_dir() and opendir().

The Code:

if (is_dir($log_directory)) {
    if ($handle = opendir($log_directory)) {
        while ($file = readdir($handle) !== FALSE) {
            $results_array[] = $file;
        }
        closedir($handle);
    }
}

The Problem:

When iterating through the elements of the $results_array, the expected file names are not returned. Instead, they are replaced by '1'. This behavior is due to a subtle detail pertaining to how readdir() works.

The Solution:

To rectify this issue, it is advisable to bypass opendir() and readdir() and employ glob() instead. glob() is a comprehensive function that provides a powerful solution for extracting file names within a directory.

The Corrected Code:

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

In this revised code, glob() is utilized to traverse the files within the $log_directory, returning their paths. Subsequently, each file path is assigned to the $file variable, enabling further processing or utilization.

This approach circumvents the limitations of readdir() and delivers the desired results – a list of actual file names, not '1'.

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