$re = '/^(?<azurePrefix>https:\/\/%%BLOBCONTAINER%%.blob.core.windows.net)\/(?<containerId>\S+)\/(?<inDir>in)\/(?<path>(\S+\/)*?)(?<filename>[^<>:"/\\\\\|\?\*]+(\.[^<>:"/\\\\\|\?\*]+)*)$/m';
$str = 'https://%%BLOBCONTAINER%%.blob.core.windows.net/tenant2/in/Copy.xml
https://%%BLOBCONTAINER%%.blob.core.windows.net/tenant2/in/compta/Subdir1/subdir2/couper.log
https://%%BLOBCONTAINER%%.blob.core.windows.net/tenant2/in/compta/Subdir1/subdir2/couper.log
https://%%BLOBCONTAINER%%.blob.core.windows.net/tenant2/in/compta/Subdir1/subdir2/couper.log';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php