maxdb_rollback(3) [php man page]

MAXDB_ROLLBACK(3)							 1							 MAXDB_ROLLBACK(3)

maxdb_rollback - Rolls back current transaction

       Procedural style

SYNOPSIS

       bool maxdb_rollback (resource  $link)

DESCRIPTION

       Object oriented style
       bool maxdb::rollback (void  )

	Rollbacks the current transaction for the database specified by the $link parameter.

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

EXAMPLES

       Example #1

	      Object oriented style

	      <?php
	      $maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");

	      /* check connection */
	      if (maxdb_connect_errno()) {
		 printf("Connect failed: %s
", maxdb_connect_error());
		 exit();
	      }

	      /* disable autocommit */
	      $maxdb->autocommit(FALSE);

	      $maxdb->query("CREATE TABLE temp.mycity LIKE hotel.city");
	      $maxdb->query("INSERT INTO temp.mycity SELECT * FROM hotel.city");

	      /* commit insert */
	      $maxdb->commit();

	      /* delete all rows */
	      $maxdb->query("DELETE FROM temp.mycity");

	      if ($result = $maxdb->query("SELECT COUNT(*) FROM temp.mycity")) {
		 $row = $result->fetch_row();
		 printf("%d rows in table mycity.
", $row[0]);
		 /* Free result */
		 $result->close();
	      }

	      /* Rollback */
	      $maxdb->rollback();

	      if ($result = $maxdb->query("SELECT COUNT(*) FROM temp.mycity")) {
		 $row = $result->fetch_row();
		 printf("%d rows in table mycity (after rollback).
", $row[0]);
		 /* Free result */
		 $result->close();
	      }

	      /* Drop table myCity */
	      $maxdb->query("DROP TABLE temp.mycity");

	      $maxdb->close();
	      ?>

       Example #2

	      Procedural style

	      <?php
	      $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");

	      /* check connection */
	      if (maxdb_connect_errno()) {
		 printf("Connect failed: %s
", maxdb_connect_error());
		 exit();
	      }

	      /* disable autocommit */
	      maxdb_autocommit($link, FALSE);

	      maxdb_query($link, "CREATE TABLE temp.mycity LIKE hotel.city");
	      maxdb_query($link, "INSERT INTO temp.mycity SELECT * FROM hotel.city");

	      /* commit insert */
	      maxdb_commit($link);

	      /* delete all rows */
	      maxdb_query($link, "DELETE FROM temp.mycity");

	      if ($result = maxdb_query($link, "SELECT COUNT(*) FROM temp.mycity")) {
		 $row = maxdb_fetch_row($result);
		 printf("%d rows in table mycity.
", $row[0]);
		 /* Free result */
		 maxdb_free_result($result);
	      }

	      /* Rollback */
	      maxdb_rollback($link);

	      if ($result = maxdb_query($link, "SELECT COUNT(*) FROM temp.mycity")) {
		 $row = maxdb_fetch_row($result);
		 printf("%d rows in table mycity (after rollback).
", $row[0]);
		 /* Free result */
		 maxdb_free_result($result);
	      }

	      /* Drop table myCity */
	      maxdb_query($link, "DROP TABLE temp.mycity");

	      maxdb_close($link);
	      ?>

       The above example will output something similar to:

       0 rows in table mycity.
       25 rows in table mycity (after rollback).

SEE ALSO

       maxdb_commit(3), maxdb_autocommit(3).

PHP Documentation Group 													 MAXDB_ROLLBACK(3)

Check Out this Related Man Page

MAXDB_INSERT_ID(3)							 1							MAXDB_INSERT_ID(3)

maxdb_insert_id - Returns the auto generated id used in the last query

       Procedural style

SYNOPSIS

       mixed maxdb_insert_id (resource	$link)

DESCRIPTION

       Object oriented style
       mixed$maxdb->insert_id ()

	The  maxdb_insert_id(3)  function returns the ID generated by a query on a table with a column having the DEFAULT SERIAL attribute. If the
       last query wasn't an INSERT or UPDATE statement or if the modified table does not have a column with the  DEFAULT  SERIAL  attribute,  this
       function will return zero.

RETURN VALUES

	The  value  of the DEFAULT SERIAL field that was updated by the previous query. Returns zero if there was no previous query on the connec-
       tion or if the query did not update an DEFAULT_SERIAL value.

       Note

	       If the number is greater than maximal int value, maxdb_insert_id(3) will return a string.

EXAMPLES

       Example #1

	      Object oriented style

	      <?php
	      $maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");

	      /* check connection */
	      if (maxdb_connect_errno()) {
		 printf("Connect failed: %s
", maxdb_connect_error());
		 exit();
	      }

	      maxdb_report (MAXDB_REPORT_OFF);
	      $maxdb->query("DROP TABLE mycity");
	      maxdb_report (MAXDB_REPORT_ERROR);

	      $maxdb->query("CREATE TABLE mycity LIKE hotel.city");
	      $maxdb->query("ALTER TABLE mycity ADD id FIXED(11) DEFAULT SERIAL");

	      $query = "INSERT INTO mycity (zip,name,state) VALUES ('12203','Albany' ,'NY')";
	      $maxdb->query($query);

	      printf ("New Record has id %d.
", $maxdb->insert_id);

	      /* drop table */
	      $maxdb->query("DROP TABLE mycity");

	      /* close connection */
	      $maxdb->close();
	      ?>

       Example #2

	      Procedural style

	      <?php
	      $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");

	      /* check connection */
	      if (maxdb_connect_errno()) {
		 printf("Connect failed: %s
", maxdb_connect_error());
		 exit();
	      }

	      maxdb_report (MAXDB_REPORT_OFF);
	      maxdb_query($link,"DROP TABLE mycity");
	      maxdb_report (MAXDB_REPORT_ERROR);

	      maxdb_query($link, "CREATE TABLE mycity LIKE hotel.city");
	      maxdb_query($link, "ALTER TABLE mycity ADD id FIXED(11) DEFAULT SERIAL");

	      $query = "INSERT INTO mycity (zip,name,state) VALUES ('12203','Albany' ,'NY')";
	      maxdb_query($link, $query);

	      printf ("New Record has id %d.
", maxdb_insert_id($link));

	      /* drop table */
	      maxdb_query($link, "DROP TABLE mycity");

	      /* close connection */
	      maxdb_close($link);
	      ?>

       The above example will output something similar to:

       New Record has id 1.

PHP Documentation Group 													MAXDB_INSERT_ID(3)

Linux and UNIX Man Pages

maxdb_rollback(3) [php man page]

Check Out this Related Man Page