What will range('a', 'z') return?

What is meaning of PEAR?

Which PHP function returns 'true' if a value already exists in an array?

There are two objects- $product1 = new Shop(); $product2 = new Shop(); Which is right about them?

What's the output?

The case expression is used as part of a PHP ____.

Output using PHP 5.6.0 or higher? const ONE = 1; class foo { const TWO = ONE * 2; const THREE = ONE + self::TWO; const SENTENCE = 'The value of THREE is '.self::THREE; } echo foo::SENTENCE . '\n';

Which return true keeping in view the following code? function validateDate($date, $format = 'Y-m-d H:i:s') { $d = DateTime::createFromFormat($format, $date); return $d && $d->format($format) == $date; }

Function to get the number of arguments passed to the function?

Operator to check if two values are equal and of same data type?

Which type of variables are instances of programmer-defined classes?