Question

can someone explain what is happening in the following lines.

JLog::addLogger(array('text_file' => 'log.php'), JLog::INFO);
JLog::add('Test', JLog::INFO, '((?:test<[a-zA-Z][^>]*>\s*){0,7})');


//logger output :: testa-za-zs07

1. What is happening in the piece ((?:test<[a-zA-Z][^>]*>\s*){0,7})?
2. Why joomla logger is not giving / logging the exact string as is ((?:test<[a-zA-Z][^>]*>\s*){0,7})?
3. Can some one explain each piece of ((?:test<[a-zA-Z][^>]*>\s*){0,7})?

Answer 1

((?:test<[a-zA-Z][^>]*>\s*){0,7}) is a regular expression. Here is an explanation of what this expression means: http://regex101.com/r/dZ8sA1

If it still is not clear after you’ve read that link, just ask and I’ll try to explain further.