• Assignment Operators
• Arithmetic Operators
• Comparison Operators
• String Operators
• Combination Arithmetic & Assignment Operators

Assignment Operators

Assignment operators are used to set a variable equal to a value or set a variable to another variable’s value. Such an assignment of value is done with the “=”, or equal character. Example:

$myvar = 4;

Arithmetic Operators

Addition (+)
Subtraction (-)
Multiplication (*)
Division (/)
Modulus (%)

Comparison Operators

Equal To (==)
Not Equal To (!=)
Less Than (<)
Greater Than (>)
Less Than or Equal To (<=)
Greater Than or Equal To (>=)

Operators

! a
NOT
True if a is not true.

a && b
AND
True if both a and b are true.

a || b
OR
True if either a or b is true.

a and b
AND
True if both a and b are true.

a xor b
XOR
True if a or b is true, but not both.

a or b
OR
True if either a or b is true.

Conditional Operators in PHP

==
Is equal to

===
Is identical to (is equal and is the same data type)

!=
Is not equal to

!==
Is not identical to

<
Is less than

<=
Is less than or equal to

>
Is greater than

>=
Is greater than or equal to

PHP Operators Explanation is a post from: PHP Magic Book - Free PHP Scripts, Tutorials and Downloads

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