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Problem with using global variables in php is that they lose the the assigned value in a different php file. They only keep the global variable value in the php file in which they are declared.
Instead of globals try and use $_SESSION or $_COOKIE to keep value intact across different php files in a project
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What is new in PHP?
PHP is a recursive acronym for "PHP: Hypertext Preprocessor" created by The PHP Group. PHP is a widely used server-side scripting language and the general purpose of PHP is to create dynamic Web Pages. For more information, visit the PHP website.
What PHP Codes?
if i got your question right, you mean "what are php tags?" your should write PHP codes between <?php ... ?> where ... should be replaced by codes that you need. But if you mean "what are php codes?": there are some default codes that you may find them on php.net, and the other part is codes (Functions or classes) that other programmers develops..
What is the PHP question mark?
The PHP question mark "<?" is a signal to the web server that everything up until "?>" will be PHP code and should be treated accordingly.
What is the getopt function in PHP?
It gets options from the command line argument list. It can be used in PHP 4.3 and above, including PHP 5.
What is header in php?
header() is a php function used to modify and set HTTP headers sent to the browser.
