PHP

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Reference

• PHP Homepage

Newbie Traps & Pitfalls

PHP will let you get away with a lot of syntax mistakes which are perfectly valid code but not what you intended. Most of the following produced no immediate error messages; the code simply wouldn't work, and it took me several edit-upload-run cycles to find each problem. Here are some mistakes I made when re-learning PHP in 2005 after not using it since 1997:

• Classes
  • Member vars and functions must always be referred to using $this->fname()
  • However, var members do not take a $ prefix: $this->varName
• Operators
  • The "is equal to" comparison operator is "==" (as in c/c++), not "="