Which of the following is a valid PHP function modifier?

Variable to collect values of a form sent via the HTTP POST method?

What's the output? $name = 'John' echo 'Hi there '.$name;

Which is not a predefined variable?

If the allow_url_fopen configuration setting is enabled, which of the following functions will be able to open remote urls?

Which function checks for a specific PHP data type?

Output of the following code? $str = '0011110000bsts11100'; echo trim($str,'010s');

Output? $parts = parse_url('https://example.com/test/1234?testing&val&id=1&&=23&row=4'); parse_str($parts['query'], $query); echo count($query);

Output the code? $tmp ='Dragon%%Ball%%Z%'; $arr = explode('%',trim($tmp)); echo count($arr);

Output of the code? $arr = array ('THEY', 'WE', array ('I', 'YOU'), 'YOUR'); echo (count($arr, 1));

Not the correct way to create an empty object in PHP?