Expressions, Operations and Type Conversions

<< PHP Tutorials - Herong's Tutorial Examples

This chapter provides tutorial notes and example codes on PHP expressions and operations. Topics include writing expressions with data literals, variables, and operations; bitwise, arithmetic, comparison, logical, string, and assignment operations; precedence of operations; data type automatic conversions.

What Is an Expression?

What Is an Operation?

Precedence of Operations

Data Type Automatic Conversion

Conclusion:

• PHP supports 6 basic types of operations: bitwise, arithmetic, comparison, logical, string, and assignment operations.
• PHP performs automatic type conversion, if an operand has a data type that does match the operator.
• Write your expressions properly with operand data types match operators to avoid automatic type conversion.