Ray Yao

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About the Author, Ray Yao:

Certified PHP engineer by Zend, USA

Certified JAVA programmer by Sun, USA

Certified SCWCD developer by Oracle, USA

Certified A + professional by CompTIA, USA

Certified ASP. NET expert by Microsoft, USA

Certified MCP professional by Microsoft, USA

Certified TECHNOLOGY specialist by Microsoft, USA

Certified NETWORK + professional by CompTIA, USA