Which of the following is the 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'?

Which PHP function creates an array by using one array for keys and another for its values?

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.

What is a key difference between GET and POST?