filter_var_array
(PHP 5 >= 5.2.0, PECL filter:0.11.0)
filter_var_array — Gets multiple variables and optionally filters them
Описание
This function is useful for retrieving many values without repetitively calling filter_var().
Список параметров
- data
-
An array with string keys containing the data to filter.
- definition
-
An array defining the arguments. A valid key is a string containing a variable name and a valid value is either a filter type, or an array optionally specifying the filter, flags and options. If the value is an array, valid keys are filter which specifies the filter type, flags which specifies any flags that apply to the filter, and options which specifies any options that apply to the filter. See the example below for a better understanding.
This parameter can be also an integer holding a filter constant. Then all values in the input array are filtered by this filter.
Возвращаемые значения
An array containing the values of the requested variables on success, or FALSE on failure. An array value will be FALSE if the filter fails, or NULL if the variable is not set.
Примеры
Пример #1 A filter_var_array() example
<?php
error_reporting(E_ALL | E_STRICT);
$data = array(
'product_id' => 'libgd<script>',
'component' => '10',
'versions' => '2.0.33',
'testscalar' => array('2', '23', '10', '12'),
'testarray' => '2',
);
$args = array(
'product_id' => FILTER_SANITIZE_ENCODED,
'component' => array('filter' => FILTER_VALIDATE_INT,
'flags' => FILTER_FORCE_ARRAY,
'options' => array('min_range' => 1, 'max_range' => 10)
),
'versions' => FILTER_SANITIZE_ENCODED,
'doesnotexist' => FILTER_VALIDATE_INT,
'testscalar' => array(
'filter' => FILTER_VALIDATE_INT,
'flags' => FILTER_REQUIRE_SCALAR,
),
'testarray' => array(
'filter' => FILTER_VALIDATE_INT,
'flags' => FILTER_FORCE_ARRAY,
)
);
$myinputs = filter_var_array($data, $args);
var_dump($myinputs);
echo "\n";
?>
Результат выполнения данного примера:
array(6) { ["product_id"]=> array(1) { [0]=> string(17) "libgd%3Cscript%3E" } ["component"]=> array(1) { [0]=> int(10) } ["versions"]=> array(1) { [0]=> string(6) "2.0.33" } ["doesnotexist"]=> NULL ["testscalar"]=> bool(false) ["testarray"]=> array(1) { [0]=> int(2) } }
Коментарии
<?php
//an example of simply sanitize an array..
$data = array(
'<b>bold</b>',
'<script>javascript</script>',
'P*}i@893746%%%p*.i.*}}|.dw<?php echo "echo works!!";?>');
$myinputs = filter_var_array($data,FILTER_SANITIZE_STRING);
var_dump($myinputs);
//OUTPUT:
//formarray(3) { [0]=> string(4) "bold" [1]=> string(10) "javascript" [2]=> string(26) "P*}i@893746%%%p*.i.*}}|.dw" }
?>
for those who would like to know how to use regular expressions with filter var array. taken from w3 schools.
$data = array(
'regxp' => 'michael'
);
$args = array(
'regxp' => array(
'filter'=>FILTER_VALIDATE_REGEXP | FILTER_SANITIZE_STRING,
'options'=>array('regexp'=>"/^michael$/"),
));
$output=filter_var_array($data,$args);
var_dump($output); // array(1) { ["regxp"]=> string(7) "michael" }
- bruce tong
an update to previous post.
using regular expressions along with another filter in filter var array
$data = array(
'regxp' => "`\tcafé\n`"
);
$args = array(
'regxp' => array(
'filter'=>FILTER_VALIDATE_REGEXP | FILTER_SANITIZE_STRING,
'flags'=>FILTER_FLAG_STRIP_HIGH | FILTER_FLAG_STRIP_LOW | FILTER_FLAG_STRIP_BACKTICK,
'options'=>array('regexp'=>"/t(.*)/"),
));
$output=filter_var_array($data,$args);
var_dump($output); // array(1) { ["regxp"]=> string(3) "caf" }
-bruce tong
$emails = [
'a' => 'email1@domain.com',
'b' => '<email2>@domain.com',
];
$result = filter_var_array($emails, FILTER_SANITIZE_EMAIL);
print_r($result);
// the result will be...
// array('a' => 'email1@domain.com', 'b' => 'email2@domain.com')
To apply the same filter to many params/keys, use array_fill_keys().
<?php
$data = array(
'product_id' => 'libgd<script>',
'component' => ' 10 ',
'versions' => '2.0.33',
'testscalar' => array('2', '23', '10', '12'),
'testarray' => '2',
);
$keys = array(
'product_id',
'component',
'versions',
'doesnotexist',
'testscalar',
'testarray'
);
$options = array(
'filter' => FILTER_CALLBACK,
'options' => function ($value) {
return trim(strip_tags($value));
},
);
$args = array_fill_keys($keys, $options);
/* Result
$args = array(
'product_id' => array(
'filter' => FILTER_CALLBACK,
'options' => function ($value) {
return trim(strip_tags($value));
},
),
'component' => array(
'filter' => FILTER_CALLBACK,
'options' => function ($value) {
return trim(strip_tags($value));
},
),
'versions' => array(
'filter' => FILTER_CALLBACK,
'options' => function ($value) {
return trim(strip_tags($value));
},
),
'doesnotexist' => array(
'filter' => FILTER_CALLBACK,
'options' => function ($value) {
return trim(strip_tags($value));
},
),
'testscalar' => array(
'filter' => FILTER_CALLBACK,
'options' => function ($value) {
return trim(strip_tags($value));
},
),
'testarray' => array(
'filter' => FILTER_CALLBACK,
'options' => function ($value) {
return trim(strip_tags($value));
},
),
);
*/
$myinputs = filter_var_array($data, $args);
var_dump($myinputs);
Output:
array(6) {
'product_id' =>
string(5) "libgd"
'component' =>
string(2) "10"
'versions' =>
string(6) "2.0.33"
'doesnotexist' =>
NULL
'testscalar' =>
array(4) {
[0] =>
string(1) "2"
[1] =>
string(2) "23"
[2] =>
string(2) "10"
[3] =>
string(2) "12"
}
'testarray' =>
string(1) "2"
}