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| [[Category:Techniques]]
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| ==Reference==
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| *[http://php.net/ PHP Homepage]
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| ==Newbie Traps & Pitfalls==
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| 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:
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| *Classes
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| **Member vars and functions must ''always'' be referred to using '''$this->''FunctionName''()'''
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| **However, var members do not take a $ prefix: '''$this->''varName'''''
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| **If you pass an object to a function, the function will be operating on a ''copy'' of the object unless the function is called with the object passed as a reference: '''''CalledFunction''(&$''objName'');'''. The function declaration itself needs no modifications.
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| **If the function is expected to store the object for later use (e.g. it is a class constructor), the function must also use a reference when saving the object: '''$this->''localName'' =& $''iObjectParam'';'''. Otherwise (again) it will be using a copy, not the original.
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| *Operators
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| **The "is equal to" comparison operator is "==" (as in c/c++), not "="
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