... operation is known as an operand. Addition is one of the simplest operations. In the expression 6 + 2, 6 and 2 are the operands, and the expression evaluates to 8. Operators in PHP are mostly ... Evaluates to true when: $h && $i And Both $h and $i evaluate to true $h || $i Or One or both of $h and $i evaluate to true $h and $i And Both $h and $i evaluate to true $h or $i Or ... operands: $a = $b takes the value of one operand, $b, and assigns its value to the other operand, $a. We have seen expressions that involve three values, such as $a = $b + $c, but these expressions...