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Gestion des fonctions> <Filter Fonctions
Last updated: Fri, 20 Jun 2008

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filter_var

(PHP 5 >= 5.2.0, PECL filter:0.11.0)

filter_var — Filtre une variable avec un filtre spécifique

Description

mixed filter_var ( mixed $variable [, int $filter [, mixed $options ]] )

Liste de paramètres

variable

Valeur à filtrer.

filter

Identifiant du filtre à utiliser. Par défaut, vaut FILTER_SANITIZE_STRING.

options

Tableau associatif d'options ou des drapeaux. Si le filtre accepte les options, les drapeaux peuvent être fournis dans le champ "flags" du tableau. Pour les fonctions de rappel, le type callback devra être passé.

Valeurs de retour

Retourne les données filtrées, ou FALSE si le filtre échoue.

Exemples

Exemple #1 Exemple avec filter_var()

<?php
var_dump
(filter_var('bob@example.com'FILTER_VALIDATE_EMAIL));
var_dump(filter_var('example.com'FILTER_VALIDATE_URLFILTER_FLAG_SCHEME_REQUIRED));
?>

L'exemple ci-dessus va afficher :

string(15) "bob@example.com"
bool(false)

Voir aussi



Gestion des fonctions> <Filter Fonctions
Last updated: Fri, 20 Jun 2008
 
add a note add a note User Contributed Notes
filter_var
dale dot liszka at gmail dot com
09-Jul-2008 10:15
Here is how to use multiple flags (for those who learn better by example, like me):

<?php
echo "|asdf".chr(9).chr(128)."_123|";
echo
"\n";
// "bitwise conjunction" means logic OR / bitwise |
echo filter_var("|asdf".chr(9).chr(128)."_123\n|" ,FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_LOW | FILTER_FLAG_STRIP_HIGH);

/*
Results:
|asdf    �_123|
|asdf_123|
*/
?>
dale dot liszka at gmail dot com
09-Jul-2008 09:54
Using the FILTER_CALLBACK requires an array to be passed as the options:

<?php
function toDash($x){
   return
str_replace("_","-",$x);
}

echo
filter_var("asdf_123",FILTER_CALLBACK,array("options"=>"toDash"));
// returns 'asdf-123'
?>
John
26-Jul-2007 12:35
I managed to get this to work with PHP 5.1.6 on CentOS 5 with minor difficulty.

1) Download the PECL filter package
2) Extract the tarball
3) phpize the directory
4) ./configure
5) make
6) filter-0.11.0/logical_filters.c:25:31: error: ext/pcre/php_pcre.h: No such file or directory
7) find / -name php_pcre.h
8) Make sure php-devel is installed
9) Edit filter-0.11.0/logical_filters.c and replace "ext/pcre/php_pcre.h" with the absolute path of php_pcre.h
10) make
11) make install
12) add "extension=filter.so" to php.ini
13) Restart Apache
menic [monkey] o2 . pl
25-May-2007 10:46
I dont know why, but this function doesn't work properly with array as $variable. To make it work I suggest to use foreach, and filter each value in this way.

Gestion des fonctions> <Filter Fonctions
Last updated: Fri, 20 Jun 2008
 
 
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