PDO bindValue issue

[jgetner]

So after a feable attempt at a DBA layer i took some advice and started a new DB layer with PDO and currently is my execute method i have the PDO methods of bindValue() and execute() but after a few checks on the query string i have concluded bindValue is not working with in my foreach loop. So currently im a seeking some advice on routes i could go or a good code example of a proper way to bind values.

// example usage $db->prepare('SELECT * FROM :table' , array(':table' => 'users'));
public function prepare($statement = '' , array $bind = array()){
		if(!is_string($statement)){
			if($this->_error_mode === 0){
				return false;
			}elseif($this->_error_mode === 1){
				trigger_error('Argument Error: seems one or more of the supplied arguments is not a '
					          .'string type only string types are expected by DB prepare');
			}else{
				throw new DBO_Exception('Argument Error: seems one or more of the supplied arguments is not a '
					                   .'string type only string types are expected by DB prepare');
			}
		}

	if(!is_array($bind)){
		if($this->_error_mode === 0){
			return false;
		}elseif($this->_error_mode === 1){
			trigger_error('Argument Error: seems one or more of the supplied arguments is not a '
				           .'string type only string types are expected by DB __construct');
		}else{
			throw new DBO_Exception('Argument Error: seems one or more of the supplied arguments is not a '
				              .'string type only string types are expected by DB __construct');
		}
	}

	$query = $this->_lid->prepare($statement);
	$this->_query_count++;
	$q_count = $this->_query_count;
	$this->_statements[$q_count] = array($query , $bind);
	return $this;
}

public function execute(){
	if(isset($this->_statements) && is_array($this->_statements)){
		$query = $this->_statements[$this->_query_count][0];
		if(isset($this->_statements[$this->_query_count]) && is_array($this->_statements[$this->_query_count][1])){
			if($this->_statements[$this->_query_count][1] > 0){
				foreach($this->_statements[$this->_query_count][1] as $k => $v){
					var_dump($k);
					var_dump($v);
					$query->bindValue($k , $v);
					var_dump($query);
				}
				//var_dump($query);
				return $query->execute();
			}else{
				//var_dump($query);
				return $query->execute();

			}
		}
	}else{
		throw new DBO_Exception('Database Error: the prepared query was not prepaired properly');
	}

	return false;
}