Zend Certified PHP Engineer

You want to access the 3rd character of a string, contained in the variable $test. Which of the following possibilites work? (Choose 2)

Which sentence describes the following regular expression match? preg_match('/^\d+(?:\.[0-9]+)?$/', $test);

You need to escape special characters to use user input inside a regular expression. Which functions would you use? (Choose 2)

How many elements does the $matches array contain after the following function call is performed? preg_match('/^(\d{1,2}([a-z]+))(?:\s*)\S+ (?=201[0-9])/', '21s...

How many elements does the array $matches from the following code contain? $str = "The cat sat on the roof of their house."; $matches = preg_split("/(the)/i", $...