PHP Operators Operators are used to operate on values. PHP Operators This section lists the different operators used in PHP. Arithmetic Operators Operator Description Example Result + Addition x=2 x+2 4 - Subtraction x=2 5-x 3 * Multiplication x=4 x*5 20 / Division 15/5 5/2 3 2.5 % Modulus (division remainder) 5%2 10%8 10%2 1 2 0 ++ Increment x=5 x++ x=6 -- Decrement x=5 x-- x=4 Assignment Operators Operator Example Is The Same As = x=y x=y += x+=y x=x+y -= x-=y x=x-y *= x*=y x=x*y /= x/=y x=x/y .= x.=y x=x.y %= x%=y x=x%y Comparison Operators Operator Description Example == is equal to 5==8 returns false != is not equal 5!=8 returns true > is greater than 5>8 returns false < is less than 5<8> >= is greater than or equal to 5>=8 returns false <= is less than or equal to 5<=8 returns true Logical Operators Operator Description Example && and x=6 y=3 (x <> 1) returns true || or x=6 y=3 (x==5 || y==5) returns false ! not x=6 y=3 !(x==y) returns true