How can file permissions affect the success of a file search operation in PHP?

File permissions can affect the success of a file search operation in PHP if the user running the PHP script does not have sufficient permissions to access the files or directories being searched. To solve this issue, ensure that the user running the PHP script has the necessary permissions to read the files and directories being searched.

// Set the correct permissions for the files and directories being searched
chmod('/path/to/files', 0755);

// Run the file search operation with appropriate permissions
$searchResults = glob('/path/to/files/*.txt');