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PHP Operators

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Arithmetic Operators

Operator Name Description
x + y Addition Sum of x and y
x - y Subtraction Difference of x and y
x * y Multiplication Product of x and y
x / y Division Quotient of x and y
x % y Modulus Remainder of x divided by y
- x Negation Opposite of x
a.b Concatenation Concatenate two strings


Assignment Operators

Assignment Same as... Description
x = y x = y The left operand gets set to the value of the expression on theright
x += y x = x + y Addition
x -= y x = x - y Subtraction
x *= y x = x * y Multiplication
x /= y x = x / y Division
x %= y x = x % y Modulus
a .= b a = a . b Concatenate two strings


Incrementing/Decrementing Operators

Operator Name Description
++ x Pre-increment Increments x by one, then returns x
x ++ Post-increment Returns x, then increments x by one
-- x Pre-decrement Decrements x by one, then returns x
x -- Post-decrement Returns x, then decrements x by one


Comparison Operators

Operator Name Description
x == y Equal True if x is equal to y
x === y Identical True if x is equal to y, and they are of same type
x != y Not equal True if x is not equal to y
x <> y Not equal True if x is not equal to y
x !== y Not identical True if x is not equal to y, or they are not of same type
x > y Greater than True if x is greater than y
x < y Less than True if x is less than y
x >= y Greater than or equal to True if x is greater than or equal to y
x <= y Less than or equal to True if x is less than or equal to y


Logical Operators

Operator Name Description
x and y And True if both x and y are true
x or y Or True if either or both x and y are true
x xor y Xor True if either x or y is true, but not both
x && y And True if both x and y are true
x y Or True if either or both x and y are true
! x Not True if x is not true


Array Operators

Operator Name Description
x + y Union Union of x and y
x == y Equality True if x and y have the same key/value pairs
x === y Identity True if x and y have the same key/value pairs in the same order andof the same types
x != y Inequality True if x is not equal to y
x <> y Inequality True if x is not equal to y
x !== y Non-identity True if x is not identical to y



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