php man page for oci_set_edition

OCI_SET_EDITION(3)														OCI_SET_EDITION(3)

oci_set_edition - Sets the database edition

SYNOPSIS
       bool oci_set_edition (string  $edition)

DESCRIPTION
	Sets the database "edition" of objects to be used by a subsequent connections.

	Oracle Editions allow concurrent versions of applications to run using the same schema and object names. This is useful for upgrading live
       systems.

	Call oci_set_edition(3) before calling oci_connect(3), oci_pconnect(3) or oci_new_connect(3).

	If an edition is set that is not valid in the database, connection will fail even if oci_set_edition(3) returns success.

	When using persistent connections, if a connection with the requested edition setting already exists, it is reused. Otherwise, a different
       persistent connection is created

PARAMETERS
	      o $edition
		- Oracle Database edition name previously created with the SQL " CREATE EDITION" command.

NOTES
       Note

	      Oracle version requirement

	       This function is available from Oracle 11 gR2 onwards.

       Caution

	      Persistent connections

	       To  avoid  inconsistencies  and unexpected errors, do not use ALTER SESSION SET EDITION to change the edition on persistent connec-
	      tions.

       Caution

	      DRCP Connection Pooling

	       To avoid inconsistencies and unexpected errors when using editions and DRCP with Oracle 11.2.0.1, keep a one-to-one  correspondence
	      between  the  oci8.connection_class and the edition name used by applications. Each pooled server of a given connection class should
	      only be used with one edition. This restriction has been removed with Oracle 11.2.0.2.

RETURN VALUES
	Returns TRUE on success or FALSE on failure.

EXAMPLES
       Example #1

	      Two scripts can use different versions of myfunc() at the same time

	      <?php

	      // File 1

	      echo "Version 1 of application
";

	      oci_set_edition('ORA$BASE');
	      $c = oci_connect('hr', 'welcome', 'localhost/XE');

	      $s = oci_parse($c, "begin :r := myfunc(); end;");
	      oci_bind_by_name($s, ":r", $r, 20);
	      oci_execute($s);
	      echo "The result is $r
";

	      ?>

	      <?php

	      // File 2

	      echo "Version 2 of application
";

	      oci_set_edition('E1');
	      $c = oci_connect('hr', 'welcome', 'localhost/XE');

	      $s = oci_parse($c, "begin :r := myfunc(); end;");
	      oci_bind_by_name($s, ":r", $r, 20);
	      oci_execute($s);
	      echo "The result is $r
";

	      ?>

PHP Documentation Group 													OCI_SET_EDITION(3)