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php Programming Glossary: undeclaredWhen should I declare variables in a PHP class? http://stackoverflow.com/questions/1086494/when-should-i-declare-variables-in-a-php-class this declaredVar I am a declared variable. this undeclaredVar I wasn't declared but I still work. function display echo.. function display echo this declaredVar . br echo this undeclaredVar echo br br test new TestClass test display test declaredVar.. test declaredVar The declared variable was changed. test undeclaredVar The undeclared variable was changed. test display In this..
Why is REGISTER_GLOBALS so bad? http://stackoverflow.com/questions/1417373/why-is-register-globals-so-bad as global variables in your script. Since accessing undeclared variables is not an error in PHP it's a warning it can lead.. therefore should not access any variables that might be undeclared and should not need REGISTER_GLOBALS for the same reason but..
http://stackoverflow.com/questions/3193072/strict-mode-in-php and Perl throws an error as soon as you try to use an undeclared variable. Does PHP offer any similar feature Thx php variables.. . List of constants here . Every instance of usage of an undeclared variable will throw a E_NOTICE . The E_STRICT error livel will.. instead of just outputting a notice when encountering an undeclared variable you could build a custom error handler . Working example..
What are PHP nested functions for? http://stackoverflow.com/questions/415969/what-are-php-nested-functions-for that these functions are somehow private they are simply undeclared until outer is run. They are also not privately scoped they..
PHP: “Notice: Undefined variable” and “Notice: Undefined index” http://stackoverflow.com/questions/4261133/php-notice-undefined-variable-and-notice-undefined-index will use later in the script. What PHP does in the case of undeclared variables is issue a very low level error E_NOTICE one that..
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