Expected 200-710 Exam Topics, as suggested by Zend :

• Module 1: PHP Basics Syntax, Operators, Variables, Control Structures, Language Constructs and Functions, Namespaces
• Module 2: Functions Arguments, Variables, Anonymous Functions, closures, Variable Scope, Type Declarations, References
• Module 3: Data Format & Types XML Basics, SimpleXML, XML Extension, Webservices Basics, DOMDocument, JSON
• Module 4: Web Features Sessions, GET and POST data, HTTP Status Codes, HTTP Authentication, HTTP Headers
• Module 5: Object Oriented Programming/ Class Constants, Instantiation, Late Static Binding, Return Types, Interfaces
• Module 6: Security Cross-Site Request Forgeries, Remote Code Injection, Encryption, Hashing algorithms, Password hashing API
• Module 7: Strings & Patterns Matching, Extracting, Searching, Encodings, Formatting
• Module 8: Databases & SQL Prepared Statements, Transactions
• Module 9: Arrays Associative Arrays, Array Iteration, SPL, Objects as arrays, Array Functions