PHP对象将值赋给mysqli_fetch_array的字符串

Question

public static function instantiate($record){
     $object = new self;


    // $object->id = $record['UserID'];
    // $object->username = $record['Username'];
    // $object->password = $record['Password'];
    // $object->first_name = $record['Fname'];
    // $object->last_name = $record['Lname'];
    // $object->email = $record['Email'];

    foreach (array_unique($record) as $attribute => $value) {

        if($object->has_attribute($attribute)){

            $object->$attribute = $value;
            //var_dump($attribute);echo '<br>';
        }
    }
    return $object;
}

In this function i get values from this $object in two ways. The long way from the commented part and the short way from the uncommented (obv).

The long way gives the good result as this :

object(User)#5 (6) { ["id"]=> string(1) "1" ["username"]=> string(6) "Parley" ["password"]=> string(5) "12345" ["first_name"]=> string(8) "Cristian" ["last_name"]=> string(8) "Pirloaga" ["email"]=> string(27) "cristian.pirloaga@gmail.com" }

The short way gives a bad result as this :

int(0) int(1) int(2) int(3) int(4) int(5) int(6) object(User)#5 (13) { ["id"]=> NULL ["username"]=> NULL ["password"]=> NULL ["first_name"]=> NULL ["last_name"]=> NULL ["email"]=> NULL ["0"]=> string(1) "1" ["1"]=> string(8) "Cristian" ["2"]=> string(8) "Pirloaga" ["3"]=> string(27) "cristian.pirloaga@gmail.com" ["4"]=> string(6) "Parley" ["5"]=> string(5) "12345" ["6"]=> string(19) "2016-02-12 05:04:22" }

the int(1)..int(6) are the $attribute values, after is the object.

Im trying to match the $attribute values with those fields from the long way. How can i do it? This is an actually code from a tutorial and it works to him and not to me.

I have a secondary issue. The foreach loop always double the values.In this case if i remove the array_unique function it will show that result two times tho in data base its only one row.why's that?

Answer 1

You can have the result you want by using mysqli_fetch_object instead of mysqli_fetch_array .

But to answer your question: If you use mysqli_fetch_array , by default you get an array containing numeric keys and associative keys as well. For example something like:

array(
 1 => 'john',
 2 => 'doe',
 'firstname' => 'john',
 'lastname' => 'doe'
)

To avoid that you can set the third parameter int $result_type to MYSQL_ASSOC as described here: http://php.net/manual/de/function.mysql-fetch-array.php

Using MYSQL_ASSOC you will get an array without numeric keys, for example:

array(
 'firstname' => 'john',
 'lastname' => 'doe'
)

Doing that your function will work, even without the array_unique in the foreach.