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$GLOBALS This contains a reference to all of the variables that are available globally within the executing script. The keys of the array are the names of the variables.

$SERVER This contains information about the context in which the script is executing, such as the name of the server, the name of the page being run, information about the connection, and so on.

$GET, $POST These contain variables that a page might send to the server as part of an HTML

$SESSION, $COOKIE These contain information about managing visitors and about a storage facility known as "cookies." We will cover this in more detail in Chapter 19, "Cookies and Sessions."

$REQUEST This contains the content of the $POST, $GET, and $SESSION arrays.

$ENV This contains the environment variables for the process in which the PHP language engine is executing. The keys of the array are the names of environment variables.

$phperrormsg This holds the last error message that was generated by the PHP language engine while executing the current script. It is only available within the scope of the code where the error occurred, and if the TRackerrors configuration option in php.ini is turned on. (By default, it is not.)

Kembali lagi dengan materi baru mengenai inti dan dasar yang banyak mereka melewatinya, setelah beberapa pekan kita melewati dengan belajar / sinau CSS dan JS termasuk Ajax itu … sekarang saatnya beralih ke intinya dalam web programming

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