php - PDO SHOW TABLES array -

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just working function , it's not working out planned. supposed grab table names in database , store them in array. results of array doubling array shown in example below:

array ( [0] => 113340 )  array ( [0] => 113340 [1] => 116516 )  array ( [0] => 113340 [1] => 116516 [2] => 139431 )  array ( [0] => 113340 [1] => 116516 [2] => 139431 [3] => 20731 )  array ( [0] => 113340 [1] => 116516 [2] => 139431 [3] => 20731 ... )

the code using:

function itemdiscontinued($dbh, $id, $detail) {   try {     $tablelist = array();     $result = $dbh->query("show tables");     while ($row = $result->fetch(pdo::fetch_num)) {       $tablelist[] = $row[0];       print_r($tablelist);     }   }   catch (pdoexception $e) {     echo $e->getmessage();   } }

to names of tables better

public function list_tables() {     $sql = 'show tables';     if($this->is_connected)     {         $query = $this->pdo->query($sql);         return $query->fetchall(pdo::fetch_column);     }     return false; }

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