PHP Mongodb create Text Index - php

Question

I am new in MongoDB, and I'm trying to create a text index.
After trying several hours, I have not accomplished anything.
I have an array like this:
//The keys and values are reversed to avoid duplicates in the array keys.
$arr = array(
'Personal' => array(
'PEPE' => "_id",
'd' => array(
"full_name" => "Pedro",
"last_name" => "Picapiedras",
"address"=> "La matanza 123",
"department"=> "Soporte"
), //d end
'PABLO' => "_id",
'd' => array(
"full_name"=> "Pablo",
"last_name"=> "Marmolejo",
"address"=> "Pica 123",
"department"=> "Soporte"
), //d end
)//personal end
);//arr end
I want to create an Index of the _id field so that to edit or view documents, access them through "Pablo" or "Pepe".
Is this possible? Could you give me a hand on how I can do this?
Edit
I have tried with
db.reviews.createIndex( { comments: "text" } )
and
$user = Array(
'_id' => "$id",
'name' => $name,
);
$query = Array( '_id' => "$id" );
$query = Array( '_id' => new MongoId("$id") );

Answer 1

Try this:
$arr = array(
'PEPE' => array(
"_id" => 'PEPE',
'd' => array(
"full_name" => "Pedro",
"last_name" => "Picapiedras",
"address" => "La matanza 123",
"department" => "Soporte"
) //d end
), //PEPE END
'PABLO' => array(
"_id" => 'PABLO',
'd' => array(
"full_name" => "Pablo",
"last_name" => "Marmolejo",
"address" => "Pica 123",
"department" => "Soporte"
), //d end
) // Pablo END
); //$arr end
function insertMongo($array) {
try {
$mongo = new MongoClient();
$db = $mongo -> dbName;
$collection = $db -> collectionName;
$collection -> insert($array);
} catch (MongoCursorException $e) {
die("Query failed ".$e - > getMessage());
}
} //insertMongo
//To execute:
foreach($arr as $a) {
insertMongo($a);
};