PHP includes many predefined variables that may be used as global variables across the script.
NAME | DESCRIPTION |
---|---|
$_COOKIE | Sets or reads cookies |
$_ENV | Sets or reads environmental variables |
$_FILES | Reads and manipulates uploaded file's information |
$_GET | Reads and manipulates uploaded GET variables |
$_POST | Reads and manipulates uploaded POST data |
$_REQUEST | Sets or reads REQUEST variables |
$_SESSION | Sets or reads sessions |
$_SERVER | Returns information about server |
$argc | Returns number of arguments passed to script |
$argv | Returns array of arguments passed to script |
$GLOBALS | Reads and manipulates all global variables |
$HTTP_RAW_POST_DATA | Reads and manipulates uploaded raw POST date |
$http_response_header | Returns HTTP response headers |
$php_errormsg | Returns error message |
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