What potential issues could arise when trying to sort file extensions in PHP?

One potential issue that could arise when trying to sort file extensions in PHP is that the sorting may not be case-insensitive, leading to incorrect ordering of file extensions. To solve this issue, you can use the `strcasecmp()` function to compare file extensions in a case-insensitive manner before sorting them. 

// Array of file extensions
$fileExtensions = ['jpg', 'png', 'gif', 'JPEG', 'bmp'];

// Sort file extensions in a case-insensitive manner
usort($fileExtensions, function($a, $b) {
    return strcasecmp($a, $b);
});

// Output sorted file extensions
print_r($fileExtensions);

Keywords

file extensions sorting PHP array comparison

Related Questions