4.3.7. Define the operators

All programming languages have a number of essential operators. Operators are the commands that compare, affect (change) or calculate something. The following essential operators are required byt he IB:

Comparison Operators

Comparison operators evaluate whether two variables are equal, and if not, how they are different:

Operator	Name	PHP Syntax	Explaination	Usage example
=	Equals	== or ===	Compares two numbers or strings to see if they are the same. PHP: == converts the variables to the same data type and evaluates the values, while === evaluates both values and data type	if ($x == $y) { do something }
≠
<

=, ≠, <, <=, >, >=, mod, div.