Extract Version from file name.

We need to get version number from file name some time.

We can use Regular Expression for that.

$reg = ‘/^[\w-]+.(\d+.\d+.\d+).zip/’;

$filename = “myapp.1.12.2”;

preg_match_all($reg, $filename, $matches, PREG_SET_ORDER, 0);

echo $matches[0][1];

result: 1.12.2