Description:
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Entering the text "parent" into the search box at the top of the page at http://www.php.net and pressing "enter" or clicking the search arrow when "function list" is selected to the right of the search box redirects the user to the documentation page for the "print" function at http://jp.php.net/manual/en/function.print.php

Searching "online documentation" instead of "function list" brings up the desired page at http://www.php.net/manual/en/keyword.parent.php

While "parent" is indeed not a function, it seems that a standard "Sorry, but the function parent is not in the online manual..." page would be the more correct response.

Expected result:
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Browser redirected to "Sorry, but the function parent is not in the online manual..." at
http://www.php.net/manual-lookup.php?pattern=parent&lang=en or to documentation of the special name parent at
http://www.php.net/manual/en/keyword.parent.php

Actual result:
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Browser is redirected to documentation for "print" function at http://www.php.net/manual/en/function.print.php