如何在MySQL数据库中插入数组？

Question

I've got the following array:

$dati = array(
    "data" => array(
        'address_complete'=>$data->results[0]->formatted_address, 
        'address_square'=>$data->results[0]->address_components[1]->long_name,
        'location'=>$data->results[0]->address_components[2]->long_name,
        'postal_code'=>$data->results[0]->address_components[7]->long_name,
        'data_ora'=>$tmp_date
    )
);

and I want to insert $dati["data"]['location'] in database. How can I fix

mysql_query("INSERT into utenti(city) VALUES ('$dati[data][location]')") or die (mysql_error());

?

Answer 1

At first , use proper variable interpolation:

mysql_query("INSERT into utenti(city) VALUES ('{$dati["data"]["location"]}')") or die (mysql_error());

Secondly , mysql_ extension is deprecated, use MySQLi or PDO_MySQL instead.

Answer 2

PHP's parser is not greedy, and multi-dimensional arrays in double-quoted strings will NOT parse properly. eg

$arr['a']['b'] = 'c';
echo "$arr[a][b]"; 

will print Array[b] , not c as you expect, because PHP stops parsing for arrays after the first [] key.

You have to use the {} extended notation:

echo "{$arr['a']['b']}"; // prints c as expected

Answer 3

Use somthing like below

mysql_query("INSERT into utenti(city) VALUES ('".$dati['data']['location']."')") or die (mysql_error());

Note: mysql_ extension is deprecated, use MySQLi or PDO_MySQL instead.