(PHP 5 >= 5.1.0, PHP 7, PHP 8, PECL pdo >= 0.1.0)
 
  
 
  
   类摘要
 
   
    
 
    
     
      class PDO
     
     {
 
    
   __construct(    
string $dsn,    
string $username = ?,    
string $password = ?,    
array $driver_options = ?)
 
    
exec(
string $statement): 
int 
public quote(
string $string, 
int $parameter_type = PDO::PARAM_STR): 
string 
 
   }