Question

How to extract a file name from a path, replace whitespaces, and make it lowercase using RegEx in PHP

Answer 1

function normalizeFilename(string $filePath): string {
    // Extract only the file name
    $filename = preg_replace('/^.*[\\\\\\/](.*)$/', '$1', $filePath);

    // Replace whitespaces with underscores
    $filename = str_replace(' ', '_', $filename);

    // Convert to lowercase
    $filename = strtolower($filename);

    return $filename;
}

$filePath = "c:\\path\\to\\file\\WITH Whitespace1 and Whitespace2.php";
$result = normalizeFilename($filePath);

echo $result;



/*
run:

with_whitespace1_and_whitespace2.php

*/

 

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