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66<refentry xmlns =" http://docbook.org/ns/docbook" xmlns : xi =" http://www.w3.org/2001/XInclude" xml : id =" function.filter-input" >
6060 <refsect1 role =" returnvalues" >
6161 &reftitle.returnvalues;
6262 <simpara >
63- En caso de éxito devuelve la variable filtrada.
64- Si la variable no está definida se devuelve &false; .
65- En caso de fallo se devuelve &false; ,
66- a menos que se use el flag <constant >FILTER_NULL_ON_FAILURE</constant >,
67- en cuyo caso se devuelve &null; .
63+ Valor de la variable solicitada en caso de éxito,
64+ &false; si el filtro falla,
65+ o &null; si la variable <parameter >var_name</parameter > no está definida.
66+ Si se usa el flag <constant >FILTER_NULL_ON_FAILURE</constant >,
67+ devuelve &false; si la variable no está definida
68+ y &null; si el filtro falla.
6869 </simpara >
6970 </refsect1 >
7071
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