Difference between revisions of "PHP"
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*[http://php.net/ PHP Homepage] | *[http://php.net/ PHP Homepage] | ||
==Newbie Traps & Pitfalls== | ==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 | *Classes | ||
**Member vars and functions must ''always'' be referred to using '''$this->fname()''' | **Member vars and functions must ''always'' be referred to using '''$this->fname()''' | ||
**However, var members do not take a $ prefix: '''$this->varName''' | **However, var members do not take a $ prefix: '''$this->varName''' | ||
*Operators | |||
**The "is equal to" comparison operator is "==" (as in c/c++), not "=" | |||
Revision as of 16:48, 24 July 2005
Reference
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 "="