filter_has_var

(PHP 5 >= 5.2.0)

filter_has_var — Comprueba si existe una variable de un tipo concreto existe

Descripción

bool filter_has_var ( int $type , string $variable_name )

Parámetros

type: Una de estas posibilidades: INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER o INPUT_ENV.
variable_name: Nombre de la variable a comprobar.

Valores devueltos

Devuelve TRUE en caso de éxito o FALSE en caso de error.

add a note User Contributed Notes filter_has_var

Anonymous 21-May-2009 02:28


To note: filter_has_var() is a bit faster than isset()

drm at melp dot nl 16-Jan-2009 01:54


Please note that the function does not check the live array, it actually checks the content received by php:



<?php

$_GET['test'] = 1;

echo filter_has_var(INPUT_GET, 'test') ? 'Yes' : 'No';

?>



would say "No", unless the parameter was actually in the querystring.



Also, if the input var is empty, it will say Yes.

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