Can PHP's glob() be made to find files in a case insensitive manner?

Question

I want all CSV files in a directory, so I use

glob('my/dir/*.CSV')

This however doesn't find files with a lowercase CSV extension.

I could use

glob('my/dir/*.{CSV,csv}', GLOB_BRACE);

But is there a way to allow all mixed case versions? Or is this just a limitation of glob() ?

Answer 1

You could do this

$files = glob('my/dir/*');

$csvFiles =  preg_grep('/\.csv$/i', $files);

Answer 2

If you want glob to be case-insensitive, you need to build a regex to pass in. Something like

glob("i~my/dir/*.CSV~");

Alternatively if you're using an older version of PHP you can use the sql_regcase() function.

$pattern = sql_regcase("my/dir/*.CSV");
glob($pattern);

However, this function is deprecated as of PHP 5.3 so you probably should just build the regex yourself.

Answer 3

Glob patterns support character ranges:

glob('my/dir/*.[cC][sS][vV]')

Answer 4

glob('my/dir/*.[cC][sS][vV]') should do it. Yeah it's kind of ugly.