PHP filter_input_array() is not failing as expected

Question

I'm attempting to use filter_input_array() to validate some post data. Despite my best efforts the function seems to return null values inside of the $filter array(passing the condition) as opposed to failing the validation and returning false as I expect.

Here's an example of the code implementation:

$filters = array(
  'phone' => FILTER_VALIDATE_INT,
  'email' => FILTER_VALIDATE_EMAIL
);

if(filter_input_array(INPUT_POST, $filters)){
  //filters are validated insert to database
} else{
  //filters are invalid return to form
}

No matter kind of bad data (phone='a', email='{}/!~' for example) I enter the array is still returned instead of the function returning false and failing the condition. Any help would be greatly appreciated.

Jim · Accepted Answer · 2012-02-27 16:42:40Z

3

filter_input_array wont return false if any filter fails. Rather it will return an array with the appropriate items set to false if they failed the filter (or null if they weren't set.

answered Feb 27, 2012 at 16:42

Jim

22.7k6 gold badges55 silver badges81 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

dead · Accepted Answer · 2012-02-27 17:08:29Z

2

To keep the code the way you want it try this method

      $filters = array(
     'phone' => FILTER_VALIDATE_INT,
        'email' => FILTER_VALIDATE_EMAIL
        );
       if(!in_array(null || false, filter_input_array(INPUT_POST, $filters))) 
       //enter into the db
      else 
      //Validation failled

answered Feb 27, 2012 at 17:08

dead

3642 silver badges10 bronze badges

1 Comment

Bl00dyRu1n Over a year ago

Works great thanks. I was wondering what was going on. I guess I interpreted the manual incorrectly.

Sgn. · Accepted Answer · 2012-02-27 16:58:40Z

2

filter_input_array function returns the result as an array of edited inputs, FALSE if it fails, NULL if each of inputs is not set. So you should get the result in a variable. Another thing is to check falsehood first. You need something like this

$filters = array(
  'phone' => FILTER_VALIDATE_INT,
  'email' => FILTER_VALIDATE_EMAIL
);

if(false === ($res = filter_input_array(INPUT_POST, $filters))){
  /* Not valid */
} elseif(null == $res) {
  /* Something is not set */
} else {
  /* Everything is alright  
   * You can use $res variable here.
   */
}

Take a look at php manual : php.net manual

answered Feb 27, 2012 at 16:58

Sgn.

1,6962 gold badges14 silver badges29 bronze badges

Collectives™ on Stack Overflow

PHP filter_input_array() is not failing as expected

3 Answers 3

Comments

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related