新手问题~~~~~~

Question

很想帮助你,但是我没有!我有MySQL的！

Answer 1

if(!defined("SQL_LAYER"))
{define("SQL_LAYER","postgresql");class sql_db
{ var $db_connect_id;
var $query_result;
var $in_transaction = 0;
var $row = array();
var $rowset = array();
var $rownum = array();
var $num_queries = 0; //
// Constructor
//
function sql_db($sqlserver, $sqluser, $sqlpassword, $database, $persistency = true)
{
$this->connect_string = ""; if( $sqluser )
{
$this->connect_string .= "user=$sqluser ";
} if( $sqlpassword )
{
$this->connect_string .= "password=$sqlpassword ";
} if( $sqlserver )
{
if( ereg(":", $sqlserver) )
{
list($sqlserver, $sqlport) = split(":", $sqlserver);
$this->connect_string .= "host=$sqlserver port=$sqlport ";
}
else
{
if( $sqlserver != "localhost" )
{
$this->connect_string .= "host=$sqlserver ";
}
}
} if( $database )
{
$this->dbname = $database;
$this->connect_string .= "dbname=$database";
} $this->persistency = $persistency; $this->db_connect_id = ( $this->persistency ) ? pg_pconnect($this->connect_string) : pg_connect($this->connect_string); return ( $this->db_connect_id ) ? $this->db_connect_id : false;
} //
// Other base methods
//
function sql_close()
{
if( $this->db_connect_id )
{
//
// Commit any remaining transactions
//
if( $this->in_transaction )
{
@pg_exec($this->db_connect_id, "COMMIT");
} if( $this->query_result )
{
@pg_freeresult($this->query_result);
} return @pg_close($this->db_connect_id);
}
else
{
return false;
}
} //
// Query method
//
function sql_query($query = "", $transaction = false)
{
//
// Remove any pre-existing queries
//
unset($this->query_result);
if( $query != "" )
{
$this->num_queries++; $query = preg_replace("/LIMIT ([0-9]+),([ 0-9]+)/", "LIMIT \\2 OFFSET \\1", $query); if( $transaction == BEGIN_TRANSACTION && !$this->in_transaction )
{
$this->in_transaction = TRUE; if( !@pg_exec($this->db_connect_id, "BEGIN") )
{
return false;
}
} $this->query_result = @pg_exec($this->db_connect_id, $query);
if( $this->query_result )
{
if( $transaction == END_TRANSACTION )
{
$this->in_transaction = FALSE; if( !@pg_exec($this->db_connect_id, "COMMIT") )
{
@pg_exec($this->db_connect_id, "ROLLBACK");
return false;
}
} $this->last_query_text[$this->query_result] = $query;
$this->rownum[$this->query_result] = 0; unset($this->row[$this->query_result]);
unset($this->rowset[$this->query_result]); return $this->query_result;
}
else
{
if( $this->in_transaction )
{
@pg_exec($this->db_connect_id, "ROLLBACK");
}
$this->in_transaction = FALSE; return false;
}
}
else

Answer 2

{
if( $transaction == END_TRANSACTION && $this->in_transaction )
{
$this->in_transaction = FALSE; if( !@pg_exec($this->db_connect_id, "COMMIT") )
{
@pg_exec($this->db_connect_id, "ROLLBACK");
return false;
}
} return true;
}
} //
// Other query methods
//
function sql_numrows($query_id = 0)
{
if( !$query_id )
{
$query_id = $this->query_result;
} return ( $query_id ) ? @pg_numrows($query_id) : false;
} function sql_numfields($query_id = 0)
{
if( !$query_id )
{
$query_id = $this->query_result;
} return ( $query_id ) ? @pg_numfields($query_id) : false;
} function sql_fieldname($offset, $query_id = 0)
{
if( !$query_id )
{
$query_id = $this->query_result;
} return ( $query_id ) ? @pg_fieldname($query_id, $offset) : false;
} function sql_fieldtype($offset, $query_id = 0)
{
if( !$query_id )
{
$query_id = $this->query_result;
} return ( $query_id ) ? @pg_fieldtype($query_id, $offset) : false;
} function sql_fetchrow($query_id = 0)
{
if( !$query_id )
{
$query_id = $this->query_result;
} if($query_id)
{
$this->row = @pg_fetch_array($query_id, $this->rownum[$query_id]); if( $this->row )
{
$this->rownum[$query_id]++;
return $this->row;
}
} return false;
} function sql_fetchrowset($query_id = 0)
{
if( !$query_id )
{
$query_id = $this->query_result;
} if( $query_id )
{
unset($this->rowset[$query_id]);
unset($this->row[$query_id]);
$this->rownum[$query_id] = 0; while( $this->rowset = @pg_fetch_array($query_id, $this->rownum[$query_id], PGSQL_ASSOC) )
{
$result[] = $this->rowset;
$this->rownum[$query_id]++;
} return $result;
} return false;
} function sql_fetchfield($field, $row_offset=-1, $query_id = 0)
{
if( !$query_id )
{
$query_id = $this->query_result;
} if( $query_id )
{
if( $row_offset != -1 )
{
$this->row = @pg_fetch_array($query_id, $row_offset, PGSQL_ASSOC);
}
else
{
if( $this->rownum[$query_id] )
{
$this->row = @pg_fetch_array($query_id, $this->rownum[$query_id]-1, PGSQL_ASSOC);
}
else
{
$this->row = @pg_fetch_array($query_id, $this->rownum[$query_id], PGSQL_ASSOC); if( $this->row )
{
$this->rownum[$query_id]++;
}
}
} return $this->row[$field];
} return false;
} function sql_rowseek($offset, $query_id = 0)
{ if(!$query_id)
{
$query_id = $this->query_result;
} if( $query_id )
{
if( $offset > -1 )
{
$this->rownum[$query_id] = $offset;
return true;
}
else
{
return false;
}
} return false;
} function sql_nextid()
{
$query_id = $this->query_result; if($query_id && $this->last_query_text[$query_id] != "")
{
if( preg_match("/^INSERT[\t\n ]+INTO[\t\n ]+([a-z0-9\_\-]+)/is", $this->last_query_text[$query_id], $tablename) )
{
$query = "SELECT currval('" . $tablename[1] . "_id_seq') AS last_value";
$temp_q_id =  @pg_exec($this->db_connect_id, $query);
if( !$temp_q_id )
{
return false;
} $temp_result = @pg_fetch_array($temp_q_id, 0, PGSQL_ASSOC); return ( $temp_result ) ? $temp_result['last_value'] : false;
}
} return false;
} function sql_affectedrows($query_id = 0)
{
if( !$query_id )
{
$query_id = $this->query_result;
} return ( $query_id ) ? @pg_cmdtuples($query_id) : false;
} function sql_freeresult($query_id = 0)
{
if( !$query_id )
{
$query_id = $this->query_result;
} return ( $query_id ) ? @pg_freeresult($query_id) : false;
} function sql_error($query_id = 0)
{
if( !$query_id )
{
$query_id = $this->query_result;
} $result['message'] = @pg_errormessage($this->db_connect_id);
$result['code'] = -1; return $result;
}} // class ... db_sql} // if ... defined