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Input Constants

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These constants are used by filter_input and filter_input_array.

Constants

These constants are used by filter_input() and filter_input_array().

INPUT_POST (int)

POST variables.

INPUT_GET (int)

GET variables.

INPUT_COOKIE (int)

COOKIE variables.

INPUT_ENV (int)

ENV variables.

INPUT_SERVER (int)

SERVER variables.

INPUT_SESSION (int)

SESSION variables. (Removed as of PHP 8.0.0; was not implemented previously)

INPUT_REQUEST (int)

REQUEST variables. (Removed as of PHP 8.0.0; was not implemented previously)

Source: reference/filter/constants.input.xml · from the official PHP manual (php/doc-en)