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.

Answer 1

I heard about a function that can be used like this: Try if that works for you!

<?php
$pattern = sql_regcase("*.txt");
glob($pattern);
?>

Answer 2

To make it work with all extensions use:

$extension = 'some_extension';
glob('my/dir/*.preg_replace('/(\w)/e', "'['.strtoupper($1).strtolower($1).']'", $extension));

Answer 3

Came to this link for glob with multiple files. Although it doesn't help with OP, it may help others who end up here.

$file_type = 'csv,jpeg,gif,png,jpg';
$i = '0';
foreach(explode(",",$file_type) as $row){
    if ($i == '0') {
        $file_types = $row.','.strtoupper($row);
    } else {
        $file_types .= ','.$row.','.strtoupper($row);
    }
    $i++;
}

$files = glob($dir."*.{".$image_types."}",GLOB_BRACE);

Answer 4

You can write your own case insensitive glob. This is from a personal web library I write:

/** PHP has no case insensitive globbing
 * so we have to build our own.
 *
 * $base will be the initial part of the path which doesn't need case insensitive
 * globbing.
 * Suffix is similar - it will not be made insensitive
 * Make good use of $base and $suffix to keep $pat simple and fast in use.
 */
    function ciGlob($pat, $base = '', $suffix = '')
    {
        $p = $base;
        for($x=0; $x<strlen($pat); $x++)
        {
            $c = substr($pat, $x, 1);
            if( preg_match("/[^A-Za-z]/", $c) )
            {
                $p .= $c;
                continue;
            }
            $a = strtolower($c);
            $b = strtoupper($c);
            $p .= "[{$a}{$b}]";
        }
        $p .= $suffix;
        return glob($p);
    }