filter_var_array
In the current release of CentOS5 php-devel doesn't include php_pcre.h
filter_var
(PHP 5 >= 5.2.0)
filter_var — Filtern einer Variablen durch einen spezifischen Filter
Parameter-Liste
- variable
-
Wert der gefiltert werden soll. Arrays werden rekursiv gefiltert.
- filter
-
ID des zu benutztenden Filters. Standard ist FILTER_SANITIZE_STRING.
- options
-
Assoziatives Array mit Optionen oder bitweise Disjunktion von Flags. Wenn der Filter Optionen akzeptiert, können Flags auch im "flags" Feld des Arrays angegeben werden. Für "callback" Filter sollte der callback-Typ angegeben werden.
Rückgabewerte
Gibt die gefilterten Daten zurück oder FALSE wenn fehlgeschlagen.
Beispiele
Beispiel #1 filter_var()-Beispiel
<?php
var_dump(filter_var('bob@example.com', FILTER_VALIDATE_EMAIL));
var_dump(filter_var('example.com', FILTER_VALIDATE_URL, FILTER_FLAG_SCHEME_REQUIRED));
?>
Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
string(15) "bob@example.com" bool(false)
Siehe auch
- filter_var_array() - Nimmt mehrere Variablen entgegen und filtert sie optional
- filter_input() - Nimmt Variable von Außen entgegen und filtert sie optional
- filter_input_array() - Nimmt mehrere Variablen von Außen entgegen und filtert sie optional
- Informationen über den Callback-Typ
add a note
User Contributed Notesfilter_var
bcl at brianlane dot com
19-Oct-2009 06:18
19-Oct-2009 06:18
madhamster
19-Aug-2009 05:42
19-Aug-2009 05:42
Flags and options manual: http://www.w3schools.com/PHP/php_ref_filter.asp
suit dot 2009 at rebell dot at
07-Aug-2009 10:11
07-Aug-2009 10:11
If PHP >= 5.2 is not present, you can use the regular expression of the original PHP-c-file:
http://svn.php.net/viewvc/php/php-src/trunk/ext/filter/logical_filters.c
Instead of:
<?php filter_var('bob@example.com', FILTER_VALIDATE_EMAIL)); ?>
Just use preg_match(); with a copy of the original regular expression (found in the void "php_filter_validate_email") in logical_filters.c
in fact, this expression (and the original filter-funktion) ignores RFC 5321 (Section 4.5.3.1. Size Limits and Minimums).
tedivm at tedivm dot com
22-Jun-2009 08:28
22-Jun-2009 08:28
How to pass options and flags-
<?php
$options = array();
$options['options']['min_range'] = 1;
$options['options']['max_range'] = 10;
$options['flags'] = FILTER_FLAG_ALLOW_OCTAL;
filter_var(3, FILTER_VALIDATE_INT, $options);
?>
Meska
30-Apr-2009 07:08
30-Apr-2009 07:08
Just a little filter to validate IP v4 & v6
This little script display result in function of the query
<?php
$ipv6="2a01:e35:aaa4:6860:a5e7:5ba9:965e:cc93";
$ipv4="82.237.3.3";
$fake = "3342423423";
$ipv4priv = "255.255.255.255";
$ipv6priv = "::1";
echo "<pre>";
echo $ipv4;
echo "<br />";
var_dump(filter_var($ipv4,FILTER_VALIDATE_IP));
echo "<br />";
echo $ipv6;
echo "<br />";
var_dump(filter_var($ipv6,FILTER_VALIDATE_IP));
echo "<br />";
echo $fake;
echo "<br />";
var_dump(filter_var($fake,FILTER_VALIDATE_IP));
echo "<br />";
echo $ipv4priv;
echo "<br/>";
echo "FILTER_VALIDATE_IP, FILTER_FLAG_NO_RES_RANGE";
echo "<br />";
var_dump(filter_var($ipv4priv,FILTER_VALIDATE_IP, FILTER_FLAG_NO_RES_RANGE));
echo "<br />";
echo $ipv4priv;
echo "<br/>";
echo "FILTER_FLAG_NO_PRIV_RANGE";
echo "<br />";
var_dump(filter_var($ipv4priv,FILTER_FLAG_NO_PRIV_RANGE));
echo "<br />";
echo $ipv6priv;
echo "<br/>";
echo "FILTER_FLAG_NO_PRIV_RANGE";
echo "<br />";
var_dump(filter_var($ipv6priv,FILTER_FLAG_NO_PRIV_RANGE));
echo "<br />";
echo $ipv6priv;
echo "<br />";
var_dump(filter_var($ipv6priv,FILTER_VALIDATE_IP));
echo "</pre>";
?>
jon dot bertsch at ucop dot edu
24-Mar-2009 03:49
24-Mar-2009 03:49
Here's an actual example of the filter syntax with a flag since there doesn't appear to be a one liner for this anywhere:
'hours' => array('filter'=>FILTER_SANITIZE_NUMBER_FLOAT, 'flags' => FILTER_FLAG_ALLOW_FRACTION, 'options'=> '.')
dyer85 at gmail dot com
03-Nov-2008 10:00
03-Nov-2008 10:00
Note that when using FILTER_VALIDATE_INT along with the FILTER_FLAG_ALLOW_HEX flag, the string "2f", for example, is not validated successfully, because you must use the "0x" prefix, otherwise, it treats the data as base 10.
The range options are also smart enough to recognize when the boundaries are exceeded in different bases.
Here's an example:
<?php
$foo = '256';
$bar = '0x100';
var_dump(validate_int($foo)); // false, too large
var_dump(validate_int($bar)); // false, too large
function validate_int($input)
{
return filter_var(
$input,
FILTER_VALIDATE_INT,
// We must pass an associative array
// to include the range check options.
array(
'flags' => FILTER_FLAG_ALLOW_HEX,
'options' => array('min_range' => 1, 'max_range' => 0xff)
)
);
}
?>
visseraj at gmail dot com
28-Aug-2008 05:31
28-Aug-2008 05:31
Here are the other possible flags that you can use:
http://us3.php.net/manual/hu/ref.filter.php
dale dot liszka at gmail dot com
09-Jul-2008 05:15
09-Jul-2008 05:15
Here is how to use multiple flags (for those who learn better by example, like me):
<?php
echo "|asdf".chr(9).chr(128)."_123|";
echo "\n";
// "bitwise conjunction" means logic OR / bitwise |
echo filter_var("|asdf".chr(9).chr(128)."_123\n|" ,FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_LOW | FILTER_FLAG_STRIP_HIGH);
/*
Results:
|asdf �_123|
|asdf_123|
*/
?>
dale dot liszka at gmail dot com
09-Jul-2008 04:54
09-Jul-2008 04:54
Using the FILTER_CALLBACK requires an array to be passed as the options:
<?php
function toDash($x){
return str_replace("_","-",$x);
}
echo filter_var("asdf_123",FILTER_CALLBACK,array("options"=>"toDash"));
// returns 'asdf-123'
?>
John
26-Jul-2007 07:35
26-Jul-2007 07:35
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