input_get

(no version information, might be only in CVS)

input_get -- Gets variable from outside PHP and optionally filters it

Description

mixed input_get ( int type, string variable_name [, int filter [, mixed flags [, string charset]]] )

警告

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Parameters

type

One of INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, INPUT_ENV, INPUT_SESSION (not implemented yet) and 99 (serves for REQUEST for now).

variable_name

Name of a variable to get.

filter

Filter to apply. Defaults to FILTER_DEFAULT.

flags

Associative array of options or bitwise disjunction of flags. If filter accepts options, flags can be provided in "flags" field of array.

charset

Character set used for filtering. Currently no filter uses this parameter.

Return Values

Value of the requested variable on success, FALSE if the filter fails, or NULL if the variable_name variable is not set.

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範例 1. A input_get() example

<?php
$search_html
= input_get(INPUT_GET, 'search', FILTER_SANITIZE_SPECIAL_CHARS);
$search_url = input_get(INPUT_GET, 'search', FILTER_SANITIZE_ENCODED);
echo
"You have searched for $search_html.\n";
echo
"<a href='?search=$search_url'>Search again.</a>";
?>

The above example will output something similar to:

You have searched for Me &#38; son.
<a href='?search=Me%20%26%20son'>Search again.</a>

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filter_data()