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<? |
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/* |
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* $Id: dbi_pgsql.php,v 1.13 2001/04/04 09:30:15 erwin Exp $ |
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* |
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* This class is based on the Perl DBI. |
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* New functionality should be added accordingly. |
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* Please refer to the DBI documentation (perldoc DBI). |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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|
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class DBI { |
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var $session; |
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var $autocommit = 1; |
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var $debug = 1; |
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var $transaction = 0; |
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|
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var $errstr=""; |
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var $RaiseError = 1; |
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var $Driver_name = "pgsql"; |
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|
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function DBI ($db, $user, $password) { |
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$this->session = pg_connect("dbname=$db user=$user password=$password"); |
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} |
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|
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function prepare ($query) { |
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if (!$this->autocommit && !$this->transaction) { |
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$this->transaction = 1; |
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pg_exec("BEGIN"); |
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} |
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return new STH($this, $this->session, $query, $this->autocommit, $this->debug); |
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} |
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|
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function autocommit ($value) { |
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if ($this->transaction && $value) { |
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pg_exec("COMMIT"); |
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$this->transaction = 0; |
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} elseif ($value) { |
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$this->transaction = 0; |
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} |
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$this->autocommit = $value; |
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} |
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|
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function commit () { |
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return pg_exec("COMMIT"); |
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$this->transaction = 0; |
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} |
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|
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function rollback () { |
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return pg_exec("ROLLBACK"); |
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$this->transaction = 0; |
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} |
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|
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function quote ($str) { |
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if (get_magic_quotes_gpc()) { |
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$str = stripslashes($str); |
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} |
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return "'".AddSlashes($str)."'"; |
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} |
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|
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function insert_id ($sequence) { |
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$sth = new STH($this, $this->session, "SELECT currval('$sequence')", $this->mode, $this->debug); |
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$sth->execute(); |
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list($res) = $sth->fetchrow_array(); |
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return $res; |
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} |
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} |
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|
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class STH { |
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var $query; |
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var $res; |
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var $autocommit; |
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var $debug; |
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var $row; |
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var $session; |
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var $placeholders; |
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var $dbi; |
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|
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function STH (&$dbi, $session, $query, $autocommit, $debug) { |
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$this->dbi = &$dbi; |
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$this->query = $query; |
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$this->autocommit = $autocommit; |
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$this->debug = $debug; |
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$this->session = $session; |
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|
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// Scan for placeholders |
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|
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$this->placeholders = array(); |
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$quote = ''; |
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for ($i = 0; $i < strlen($query); ++$i) { |
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if ($query[$i] == "'") { |
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if (empty($quote)) { |
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$quote = "'"; |
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} elseif ($quote == "'") { |
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$quote = ''; |
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} |
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} elseif ($query[$i] == '"') { |
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if (empty($quote)) { |
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$quote = '"'; |
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} elseif ($quote == '"') { |
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$quote = ''; |
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} |
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} elseif ($query[$i] == '?') { |
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if (empty($quote)) { |
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array_push($this->placeholders, $i); |
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} |
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} |
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} |
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} |
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|
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function execute () { |
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global $SERVER_NAME; |
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global $SCRIPT_FILENAME; |
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|
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$numargs = func_num_args(); |
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$arg_list = func_get_args(); |
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|
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$parms = array(); |
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|
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for ($i = 0; $i < $numargs; $i++) { |
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if (is_array($arg_list[$i])) { |
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while (list($dummy,$parm) = each ($arg_list[$i])) { |
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array_push($parms, $parm); |
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} |
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} else { |
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array_push($parms,$arg_list[$i]); |
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} |
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} |
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|
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if (sizeof($parms) != sizeof($this->placeholders)) { |
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trigger_error("<br><b>SQL Query (".$this->query.") contains ".sizeof($this->placeholders)." placeholders but ".sizeof($parms)." was passed</b> on page $SCRIPT_FILENAME<br>", E_USER_ERROR); |
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} |
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|
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if (sizeof($parms) > 0) { |
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$query = substr($this->query, 0, $this->placeholders[0]); |
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for ($i = 0; $i < sizeof($parms) - 1; ++$i) { |
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$query .= $this->dbi->quote($parms[$i]) . substr($this->query, $this->placeholders[$i] + 1, $this->placeholders[$i + 1] - $this->placeholders[$i] - 1); |
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} |
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$query .= $this->dbi->quote($parms[$i]) . substr($this->query, $this->placeholders[$i] + 1); |
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} else { |
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$query = $this->query; |
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} |
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|
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if ($this->debug) { // Log the query |
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$fd = fopen("/tmp/dbi.$SERVER_NAME.log", "a") or die ("Couldn't append to file"); |
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fputs($fd, date("M d H:i:s",time()).": ".$query."\n==================\n"); |
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fclose($fd); |
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} |
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|
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$this->res = @pg_exec($this->session, $query); |
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if (!$this->res) { |
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if ($this->dbi->RaiseError) { |
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trigger_error("<br><b>Could not execute SQL query: \"".$query."\"</b><br><br>".pg_errormessage($this->session)."<br>", E_USER_ERROR); |
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} |
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$this->dbi->errstr = pg_errormessage($this->session); |
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} |
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|
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$this->row = 0; |
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return $this->res; |
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} |
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|
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function fetchrow_array () { |
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if($this->row<$this->rows()) |
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return @pg_fetch_row($this->res, $this->row++); |
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} |
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|
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function fetchrow_hash () { |
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if($this->row<$this->rows()) |
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return @pg_fetch_array($this->res, $this->row++); |
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} |
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|
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function finish () { |
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pg_freeresult($this->res); |
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} |
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|
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function rows () { |
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return pg_numrows($this->res); |
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} |
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} |
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?> |