php - syntax for MySQL INSERT with an array of columns -

I'm new to creating PHP and MySQL queries. I have a processor for a large form. Some fields are required, most field users are optional in my case, HTML IDs and MySQL column names are the same. I convert $ _POST to INSERT for fields and values. I've found a tutorial about using the array, but I can not work them - after several hours I have come back to using simple INSERT arrays and variables. I'm stuck, but I'm still stumped. Works in the following line and INSERTs 5 items in the database with more than 100 columns. The first 4 items are string, 5th item, monthly rcent is an integer. "$ table` (country, state, city3, city3gcode, magazineline) included in prices ('$ country', 'provide $ state', '$ City3 ',' $ city3Geocode ',' $ monthlyRental ') ";

When I create an array for the fields and use it, it is as follows:

  $ colsx = array ('country', 'State,', 'city 3,', 'city 3gcod,', 'magazine'); Include $ Query = "$ table` ('$ colsx') values ​​('$ country', 'provide $ state', '$ city3', '$ city3Geocode', '$ monthlyRental')";   
 I get a MySQL error - to use 'array' near values, check the manual related to your MySQL server version for correct syntax) '' US ', 'New York' 'Fairport, Monroe County, New York', '(43.09)' on line 1. I get this error if the array does not have objects inside or in the same quotes. I have read a lot and have tried many combinations and I can not get it. I want to see the correct syntax on a small scale before going back to forwarding expression to process $ _POST and both fields and values Are there. And yes, I know that I should use mysql_real_escape_string, but this is an easy step in the last time, in the end, some clues about syntax for an array of values ​​would be helpful, especially if it differs from field array Ho. I know that I need to add a tap as the first array object to trigger MySQL autoincrement id. what else?  
 I am very new, so please be specific.   
 
 
  $ query = "$ 'table` (' $ colsx ') etc. ...   
 $ Colsx is an array, so the product that you are about to end is actually  
  $ query = "INSERT IN 'sometable` ^^^^^ --- Yes, it literally says" array "  
 Before you do this, the array must be pre-processed in a string, for example For  
  $ colsx = array (...); $ Col_string = implode (',', $ colsx); Include $ query = "$ table_ ($ col_string) etc ...";