Which keyword is used to refer to properties or methods within the class itself?

Correct way to add comments to PHP?

Which PHP extension provides an abstract method for database retrieval?

Which language construct is used to terminate a running script?

To output information about a variable use the function

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

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

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

Which value equates to true?

Which are valid PHP error handling keywords?

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.