(PECL maxdb >= 1.0)
Rolls back current transaction
bool maxdb_rollback ( resource $link )
Procedural style
Object oriented style
bool maxdb::rollback ( void )
Rollbacks the current transaction for the database specified by the link
parameter.
Returns:
Returns TRUE
on success or FALSE
on failure.
Examples:
Object oriented style
<?php $maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB"); /* check connection */ if (maxdb_connect_errno()) { printf("Connect failed: %s\n", 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.\n", $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).\n", $row[0]); /* Free result */ $result->close(); } /* Drop table myCity */ $maxdb->query("DROP TABLE temp.mycity"); $maxdb->close(); ?>
Procedural style
<?php $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB"); /* check connection */ if (maxdb_connect_errno()) { printf("Connect failed: %s\n", maxdb_connect_error()); exit(); } /* disable autocommit */ maxdb_autocommit($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.\n", $row[0]); /* Free result */ maxdb_free_result($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).\n", $row[0]); /* Free result */ maxdb_free_result($result); } /* Drop table myCity */ maxdb_query($link, "DROP TABLE temp.mycity"); maxdb_close($link); ?>
See also:
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