mysql - PHP SQL statement escaping -

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I wanted to show each user where they said using this statement: 

  $ Result = Mysql_query ("Select CallerNumber", `CalleeNumber`,` call 'from `servicecast`, where' customer_id` = $ current_using ['customer id']");   
 < Code> $ current_user ['customerID']  is causing the error of part I tried to keep it with a quotation mark / migration, but this does not work. How can this be done?  
 
 It's been awhile since I did PHP, but I think what you want is this:  
 / P>  mysql_query ("select callerNumber", "calleeumber", `call service ',` call_ar`,' customer_id '=' ". Mysql_real_escape_string ($ current_user ['customer id'] ). "'");   
 (I'm just looking at  mysql_real_escape_string , it is apologetic if it is not commonly used.)  
 In addition, Avoid is done with a backslash (\), not a forward slash (/)

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