The ** operator is useful for sorting operations. It compares two values and returns an integer less than, equal to, or greater than 0 depending on whether the value on the ** is less than, equal to, or greater than the other.

Which are valid PHP error handling keywords?

Which value equates to true?

What is the value of $total in this calculation?$total = 2 + 5 * 20 - 6 / 3

What is the purpose of adding a lowercase "u" as a modifier after the final delimiter in a Perl-compatible regular expression?

Which code snippet uses the correct syntax for creating an instance of the Pet class?

What function converts 'Hatfields & McCoys' into 'Hatfields & McCoys'?

To output information about a variable use the function

Which language construct is used to terminate a running script?

Which PHP extension provides an abstract method for database retrieval?

Correct way to add comments to PHP?