Accessing sequence created in oracle database from php script -

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I have created the sequence in the database, such as 

  creating sequential limits from 1;

How can I specify an existing value of sec in $ t; 

  & lt ;? Php $ t =? ? & Gt;  
 
 If you want the next value from the sequence, then you will run the SQL statement below and the Myseq column Undo the results of Choose 
 
  seq.nextval myseq from dual;

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