help!

[roberto.bumbalo]

Hi I am pretty bad at php but I have got an error message as below:

Fatal error: Call to a member function hook_exist() on a non-object in /home/xxxxxxx/public_html/xxxxxxx/api/business.class.php on line 495

the code below is referring to the error

function processBooking(){
// rather than recursively calling query, insert all rows with one query
	 GLOBAL $general, $global_basedir;
	 // database table to store reservations
	 $table ='reservations';
	 // reservation date
	 $reservation_date = $_SESSION['selectedDate'];

	// prepare POST data for storage in database:
	// $keys
	// $values 
	if( $_POST['action'] == 'submit') {
		$keys = array();
		$values = array();
		$i=1;
		
		// prepare arrays for database query
		foreach($_POST as $key => $value) {
			if( $key != "action"
			      && $key != "dbdate"
			      && $key != "reservation_date"
			      && $key != "recurring_dbdate"
			      && $key != "captcha"
			      && $key != "barrier"
			      && $key != "reservation_author"
			      && $key != "email_type"
				  && $key != "terms"
			      && $key != "captchaField1"
			      && $key != "captchaField2"
			      && $key != "captchaField3"){
			      	$keys[$i] = $key;
		     		$values[$i] = "'".$value."'";
			}
			// remember some values
			if( $key == "reservation_date" ){
			   $reservation_date = strtotime($value);
			}else if($key == 'reservation_booker_name'){	
			   $_SESSION['author'] = $value;
			}else if($key == 'reservation_time'){	
			   $_SESSION['reservation_time'] = "'".$value."'";
			}else if($key == 'reservation_pax'){	
			   $_SESSION['reservation_pax'] = "'".$value."'";
			}
			
			if( $key == "reservation_date" ){
			   $keys[$i] = $key;
		     	   $values[$i] = "'".$_SESSION['selectedDate']."'";
			}
			
			$i++;
		} // END foreach $_POST

		// =-=-=-=Store in database =-=-=-=-=-=-=-=-=-=-=-=-=-=-=
			// clear old booking number
			$_SESSION['booking_number'] = '';
			// variables
			$res_pax = ($_POST['reservation_pax']) ? (int)$_POST['reservation_pax'] : 0;
			
			// sanitize old booking numbers
			$clr = querySQL('sanitize_unique_id');
			
			// create and store booking number
			if (!$_POST['reservation_id'] || $_POST['reservation_id']=='') {
			    $_SESSION['booking_number'] = uniqueBookingnumber();
			    //$_SESSION['messages'][] = _booknum.":  ' ".$_SESSION['booking_number']." '";
			    $keys[] = 'reservation_bookingnumber';
			    $values[] = "'".$_SESSION['booking_number']."'";
			}
			
		  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
		  // enter into database
		  // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
			
			// build new reservation date
			$index = array_search('reservation_date',$keys);
			// build for availability calculation

			$index = array_search('reservation_wait',$keys);
			if($index){
				$values[$index] = '1';
				$waitlist = '1';
			}
			
			
			//Check Availability
			// =-=-=-=-=-=-=-=-=
			
			// get Pax by timeslot
			$resbyTime = reservationsByTime('pax');
			$tblbyTime = reservationsByTime('tbl');
			// get availability by timeslot
			$occupancy = getAvailability($resbyTime,$general['timeintervall']);
			$tbl_occupancy = getAvailability($tblbyTime,$general['timeintervall']);
			
			//cut both " ' " from reservation_pax
			$res_pax = substr($_SESSION['reservation_pax'], 0, -1);
			$res_pax = substr($_SESSION['reservation_pax'], 1);
			
			$startvalue = $_SESSION['reservation_time'];
			//cut both " ' " from reservation_time
			$startvalue = substr($startvalue, 0, -1);
			$startvalue = substr($startvalue, 1);
			
			  $val_capacity = $_SESSION['outlet_max_capacity']-$occupancy[$startvalue];
			  $tbl_capacity = $_SESSION['outlet_max_tables']-$tbl_occupancy[$startvalue]; 

			if( (int)$res_pax > $val_capacity || $tbl_capacity < 1 ){
				//prevent double entry 	
				$index = array_search('reservation_wait',$keys);
				if($index>0){			
					  $values[$index] = '1'; // = waitlist
					  $waitlist = '1';
				}else{
					  // error on new entry
					  $keys[] = 'reservation_wait';
					  $values[] = '1'; // = waitlist
					  $waitlist = '1';
				}
			}
			// END Availability

		  if ($waitlist != 1){
			// number of database fields
			$max_keys = count($keys);
			// enter into database
			// -----
			$query = "INSERT INTO `$table` (".implode(',', $keys).") VALUES (".implode(',', $values).") ON DUPLICATE KEY UPDATE ";
			// Build 'on duplicate' query
			for ($i=1; $i <= $max_keys; $i++) {
				if($keys[$i]!=''){
			 		$query .= $keys[$i]."=".$values[$i].",";
				}else{
					$max_keys++;
				}
			}
			// run sql query 				
			$query = substr($query,0,-1);				   
			$result = query($query);
			$_SESSION['result'] = $result;
			// Reservation ID
	 		$resID = mysql_insert_id();
		
			// *** send confirmation email
				// ** PHPMailer class
				require('../web/classes/phpmailer/class.phpmailer.php');
				// ** plugin hook
				if ($hook->hook_exist('after_booking')) {
					$hook->execute_hook('after_booking');
				}
			
			// store new reservation in history
			$result = query("INSERT INTO `res_history` (reservation_id,author) VALUES ('&#37;d','%s')",$resID,$_SESSION['author']);
			// Reservation was done
			$waitlist = 2;
		  }	
			// reservation done, handle back waitlist status
			return $waitlist;
	 }
}

[PeejAvery]

Welcome to the forums, steinm! Please remember to search before posting. This is the #1 most commonly asked question here at CodeGuru.

(1) Either the variable your treating as an object is of the object type or (2) it hasn't been created yet.

In your case, it's #2...there's no reference to $hook being created at all.