晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。 林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。 见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝) 既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。 南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。
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<?php
/*
@version v5.20.9 21-Dec-2016
@copyright (c) 2000-2013 John Lim (jlim#natsoft.com). All rights reserved.
@copyright (c) 2014 Damien Regad, Mark Newnham and the ADOdb community
Released under both BSD license and Lesser GPL library license.
Whenever there is any discrepancy between the two licenses,
the BSD license will take precedence.
Set tabs to 4 for best viewing.
Latest version is available at http://adodb.sourceforge.net
Requires ODBC. Works on Windows and Unix.
*/
// security - hide paths
if (!defined('ADODB_DIR')) die();
define("_ADODB_ODBC_LAYER", 2 );
/*--------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------*/
class ADODB_odbc extends ADOConnection {
var $databaseType = "odbc";
var $fmtDate = "'Y-m-d'";
var $fmtTimeStamp = "'Y-m-d, h:i:sA'";
var $replaceQuote = "''"; // string to use to replace quotes
var $dataProvider = "odbc";
var $hasAffectedRows = true;
var $binmode = ODBC_BINMODE_RETURN;
var $useFetchArray = false; // setting this to true will make array elements in FETCH_ASSOC mode case-sensitive
// breaking backward-compat
//var $longreadlen = 8000; // default number of chars to return for a Blob/Long field
var $_bindInputArray = false;
var $curmode = SQL_CUR_USE_DRIVER; // See sqlext.h, SQL_CUR_DEFAULT == SQL_CUR_USE_DRIVER == 2L
var $_genSeqSQL = "create table %s (id integer)";
var $_autocommit = true;
var $_haserrorfunctions = true;
var $_has_stupid_odbc_fetch_api_change = true;
var $_lastAffectedRows = 0;
var $uCaseTables = true; // for meta* functions, uppercase table names
function __construct()
{
$this->_haserrorfunctions = ADODB_PHPVER >= 0x4050;
$this->_has_stupid_odbc_fetch_api_change = ADODB_PHPVER >= 0x4200;
}
// returns true or false
function _connect($argDSN, $argUsername, $argPassword, $argDatabasename)
{
global $php_errormsg;
if (!function_exists('odbc_connect')) return null;
if (!empty($argDatabasename) && stristr($argDSN, 'Database=') === false) {
$argDSN = trim($argDSN);
$endDSN = substr($argDSN, strlen($argDSN) - 1);
if ($endDSN != ';') $argDSN .= ';';
$argDSN .= 'Database='.$argDatabasename;
}
if (isset($php_errormsg)) $php_errormsg = '';
if ($this->curmode === false) $this->_connectionID = odbc_connect($argDSN,$argUsername,$argPassword);
else $this->_connectionID = odbc_connect($argDSN,$argUsername,$argPassword,$this->curmode);
$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
if (isset($this->connectStmt)) $this->Execute($this->connectStmt);
return $this->_connectionID != false;
}
// returns true or false
function _pconnect($argDSN, $argUsername, $argPassword, $argDatabasename)
{
global $php_errormsg;
if (!function_exists('odbc_connect')) return null;
if (isset($php_errormsg)) $php_errormsg = '';
$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
if ($this->debug && $argDatabasename) {
ADOConnection::outp("For odbc PConnect(), $argDatabasename is not used. Place dsn in 1st parameter.");
}
// print "dsn=$argDSN u=$argUsername p=$argPassword<br>"; flush();
if ($this->curmode === false) $this->_connectionID = odbc_connect($argDSN,$argUsername,$argPassword);
else $this->_connectionID = odbc_pconnect($argDSN,$argUsername,$argPassword,$this->curmode);
$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
if ($this->_connectionID && $this->autoRollback) @odbc_rollback($this->_connectionID);
if (isset($this->connectStmt)) $this->Execute($this->connectStmt);
return $this->_connectionID != false;
}
function ServerInfo()
{
if (!empty($this->host) && ADODB_PHPVER >= 0x4300) {
$dsn = strtoupper($this->host);
$first = true;
$found = false;
if (!function_exists('odbc_data_source')) return false;
while(true) {
$rez = @odbc_data_source($this->_connectionID,
$first ? SQL_FETCH_FIRST : SQL_FETCH_NEXT);
$first = false;
if (!is_array($rez)) break;
if (strtoupper($rez['server']) == $dsn) {
$found = true;
break;
}
}
if (!$found) return ADOConnection::ServerInfo();
if (!isset($rez['version'])) $rez['version'] = '';
return $rez;
} else {
return ADOConnection::ServerInfo();
}
}
function CreateSequence($seqname='adodbseq',$start=1)
{
if (empty($this->_genSeqSQL)) return false;
$ok = $this->Execute(sprintf($this->_genSeqSQL,$seqname));
if (!$ok) return false;
$start -= 1;
return $this->Execute("insert into $seqname values($start)");
}
var $_dropSeqSQL = 'drop table %s';
function DropSequence($seqname = 'adodbseq')
{
if (empty($this->_dropSeqSQL)) return false;
return $this->Execute(sprintf($this->_dropSeqSQL,$seqname));
}
/*
This algorithm is not very efficient, but works even if table locking
is not available.
Will return false if unable to generate an ID after $MAXLOOPS attempts.
*/
function GenID($seq='adodbseq',$start=1)
{
// if you have to modify the parameter below, your database is overloaded,
// or you need to implement generation of id's yourself!
$MAXLOOPS = 100;
//$this->debug=1;
while (--$MAXLOOPS>=0) {
$num = $this->GetOne("select id from $seq");
if ($num === false) {
$this->Execute(sprintf($this->_genSeqSQL ,$seq));
$start -= 1;
$num = '0';
$ok = $this->Execute("insert into $seq values($start)");
if (!$ok) return false;
}
$this->Execute("update $seq set id=id+1 where id=$num");
if ($this->affected_rows() > 0) {
$num += 1;
$this->genID = $num;
return $num;
} elseif ($this->affected_rows() == 0) {
// some drivers do not return a valid value => try with another method
$value = $this->GetOne("select id from $seq");
if ($value == $num + 1) {
return $value;
}
}
}
if ($fn = $this->raiseErrorFn) {
$fn($this->databaseType,'GENID',-32000,"Unable to generate unique id after $MAXLOOPS attempts",$seq,$num);
}
return false;
}
function ErrorMsg()
{
if ($this->_haserrorfunctions) {
if ($this->_errorMsg !== false) return $this->_errorMsg;
if (empty($this->_connectionID)) return @odbc_errormsg();
return @odbc_errormsg($this->_connectionID);
} else return ADOConnection::ErrorMsg();
}
function ErrorNo()
{
if ($this->_haserrorfunctions) {
if ($this->_errorCode !== false) {
// bug in 4.0.6, error number can be corrupted string (should be 6 digits)
return (strlen($this->_errorCode)<=2) ? 0 : $this->_errorCode;
}
if (empty($this->_connectionID)) $e = @odbc_error();
else $e = @odbc_error($this->_connectionID);
// bug in 4.0.6, error number can be corrupted string (should be 6 digits)
// so we check and patch
if (strlen($e)<=2) return 0;
return $e;
} else return ADOConnection::ErrorNo();
}
function BeginTrans()
{
if (!$this->hasTransactions) return false;
if ($this->transOff) return true;
$this->transCnt += 1;
$this->_autocommit = false;
return odbc_autocommit($this->_connectionID,false);
}
function CommitTrans($ok=true)
{
if ($this->transOff) return true;
if (!$ok) return $this->RollbackTrans();
if ($this->transCnt) $this->transCnt -= 1;
$this->_autocommit = true;
$ret = odbc_commit($this->_connectionID);
odbc_autocommit($this->_connectionID,true);
return $ret;
}
function RollbackTrans()
{
if ($this->transOff) return true;
if ($this->transCnt) $this->transCnt -= 1;
$this->_autocommit = true;
$ret = odbc_rollback($this->_connectionID);
odbc_autocommit($this->_connectionID,true);
return $ret;
}
function MetaPrimaryKeys($table,$owner=false)
{
global $ADODB_FETCH_MODE;
if ($this->uCaseTables) $table = strtoupper($table);
$schema = '';
$this->_findschema($table,$schema);
$savem = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
$qid = @odbc_primarykeys($this->_connectionID,'',$schema,$table);
if (!$qid) {
$ADODB_FETCH_MODE = $savem;
return false;
}
$rs = new ADORecordSet_odbc($qid);
$ADODB_FETCH_MODE = $savem;
if (!$rs) return false;
$rs->_has_stupid_odbc_fetch_api_change = $this->_has_stupid_odbc_fetch_api_change;
$arr = $rs->GetArray();
$rs->Close();
//print_r($arr);
$arr2 = array();
for ($i=0; $i < sizeof($arr); $i++) {
if ($arr[$i][3]) $arr2[] = $arr[$i][3];
}
return $arr2;
}
function MetaTables($ttype=false,$showSchema=false,$mask=false)
{
global $ADODB_FETCH_MODE;
$savem = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
$qid = odbc_tables($this->_connectionID);
$rs = new ADORecordSet_odbc($qid);
$ADODB_FETCH_MODE = $savem;
if (!$rs) {
$false = false;
return $false;
}
$rs->_has_stupid_odbc_fetch_api_change = $this->_has_stupid_odbc_fetch_api_change;
$arr = $rs->GetArray();
//print_r($arr);
$rs->Close();
$arr2 = array();
if ($ttype) {
$isview = strncmp($ttype,'V',1) === 0;
}
for ($i=0; $i < sizeof($arr); $i++) {
if (!$arr[$i][2]) continue;
$type = $arr[$i][3];
if ($ttype) {
if ($isview) {
if (strncmp($type,'V',1) === 0) $arr2[] = $arr[$i][2];
} else if (strncmp($type,'SYS',3) !== 0) $arr2[] = $arr[$i][2];
} else if (strncmp($type,'SYS',3) !== 0) $arr2[] = $arr[$i][2];
}
return $arr2;
}
/*
See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/odbc/htm/odbcdatetime_data_type_changes.asp
/ SQL data type codes /
#define SQL_UNKNOWN_TYPE 0
#define SQL_CHAR 1
#define SQL_NUMERIC 2
#define SQL_DECIMAL 3
#define SQL_INTEGER 4
#define SQL_SMALLINT 5
#define SQL_FLOAT 6
#define SQL_REAL 7
#define SQL_DOUBLE 8
#if (ODBCVER >= 0x0300)
#define SQL_DATETIME 9
#endif
#define SQL_VARCHAR 12
/ One-parameter shortcuts for date/time data types /
#if (ODBCVER >= 0x0300)
#define SQL_TYPE_DATE 91
#define SQL_TYPE_TIME 92
#define SQL_TYPE_TIMESTAMP 93
#define SQL_UNICODE (-95)
#define SQL_UNICODE_VARCHAR (-96)
#define SQL_UNICODE_LONGVARCHAR (-97)
*/
function ODBCTypes($t)
{
switch ((integer)$t) {
case 1:
case 12:
case 0:
case -95:
case -96:
return 'C';
case -97:
case -1: //text
return 'X';
case -4: //image
return 'B';
case 9:
case 91:
return 'D';
case 10:
case 11:
case 92:
case 93:
return 'T';
case 4:
case 5:
case -6:
return 'I';
case -11: // uniqidentifier
return 'R';
case -7: //bit
return 'L';
default:
return 'N';
}
}
function MetaColumns($table, $normalize=true)
{
global $ADODB_FETCH_MODE;
$false = false;
if ($this->uCaseTables) $table = strtoupper($table);
$schema = '';
$this->_findschema($table,$schema);
$savem = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
/*if (false) { // after testing, confirmed that the following does not work becoz of a bug
$qid2 = odbc_tables($this->_connectionID);
$rs = new ADORecordSet_odbc($qid2);
$ADODB_FETCH_MODE = $savem;
if (!$rs) return false;
$rs->_has_stupid_odbc_fetch_api_change = $this->_has_stupid_odbc_fetch_api_change;
$rs->_fetch();
while (!$rs->EOF) {
if ($table == strtoupper($rs->fields[2])) {
$q = $rs->fields[0];
$o = $rs->fields[1];
break;
}
$rs->MoveNext();
}
$rs->Close();
$qid = odbc_columns($this->_connectionID,$q,$o,strtoupper($table),'%');
} */
switch ($this->databaseType) {
case 'access':
case 'vfp':
$qid = odbc_columns($this->_connectionID);#,'%','',strtoupper($table),'%');
break;
case 'db2':
$colname = "%";
$qid = odbc_columns($this->_connectionID, "", $schema, $table, $colname);
break;
default:
$qid = @odbc_columns($this->_connectionID,'%','%',strtoupper($table),'%');
if (empty($qid)) $qid = odbc_columns($this->_connectionID);
break;
}
if (empty($qid)) return $false;
$rs = new ADORecordSet_odbc($qid);
$ADODB_FETCH_MODE = $savem;
if (!$rs) return $false;
$rs->_has_stupid_odbc_fetch_api_change = $this->_has_stupid_odbc_fetch_api_change;
$rs->_fetch();
$retarr = array();
/*
$rs->fields indices
0 TABLE_QUALIFIER
1 TABLE_SCHEM
2 TABLE_NAME
3 COLUMN_NAME
4 DATA_TYPE
5 TYPE_NAME
6 PRECISION
7 LENGTH
8 SCALE
9 RADIX
10 NULLABLE
11 REMARKS
*/
while (!$rs->EOF) {
// adodb_pr($rs->fields);
if (strtoupper(trim($rs->fields[2])) == $table && (!$schema || strtoupper($rs->fields[1]) == $schema)) {
$fld = new ADOFieldObject();
$fld->name = $rs->fields[3];
$fld->type = $this->ODBCTypes($rs->fields[4]);
// ref: http://msdn.microsoft.com/library/default.asp?url=/archive/en-us/dnaraccgen/html/msdn_odk.asp
// access uses precision to store length for char/varchar
if ($fld->type == 'C' or $fld->type == 'X') {
if ($this->databaseType == 'access')
$fld->max_length = $rs->fields[6];
else if ($rs->fields[4] <= -95) // UNICODE
$fld->max_length = $rs->fields[7]/2;
else
$fld->max_length = $rs->fields[7];
} else
$fld->max_length = $rs->fields[7];
$fld->not_null = !empty($rs->fields[10]);
$fld->scale = $rs->fields[8];
$retarr[strtoupper($fld->name)] = $fld;
} else if (sizeof($retarr)>0)
break;
$rs->MoveNext();
}
$rs->Close(); //-- crashes 4.03pl1 -- why?
if (empty($retarr)) $retarr = false;
return $retarr;
}
function Prepare($sql)
{
if (! $this->_bindInputArray) return $sql; // no binding
$stmt = odbc_prepare($this->_connectionID,$sql);
if (!$stmt) {
// we don't know whether odbc driver is parsing prepared stmts, so just return sql
return $sql;
}
return array($sql,$stmt,false);
}
/* returns queryID or false */
function _query($sql,$inputarr=false)
{
GLOBAL $php_errormsg;
if (isset($php_errormsg)) $php_errormsg = '';
$this->_error = '';
if ($inputarr) {
if (is_array($sql)) {
$stmtid = $sql[1];
} else {
$stmtid = odbc_prepare($this->_connectionID,$sql);
if ($stmtid == false) {
$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
return false;
}
}
if (! odbc_execute($stmtid,$inputarr)) {
//@odbc_free_result($stmtid);
if ($this->_haserrorfunctions) {
$this->_errorMsg = odbc_errormsg();
$this->_errorCode = odbc_error();
}
return false;
}
} else if (is_array($sql)) {
$stmtid = $sql[1];
if (!odbc_execute($stmtid)) {
//@odbc_free_result($stmtid);
if ($this->_haserrorfunctions) {
$this->_errorMsg = odbc_errormsg();
$this->_errorCode = odbc_error();
}
return false;
}
} else
$stmtid = odbc_exec($this->_connectionID,$sql);
$this->_lastAffectedRows = 0;
if ($stmtid) {
if (@odbc_num_fields($stmtid) == 0) {
$this->_lastAffectedRows = odbc_num_rows($stmtid);
$stmtid = true;
} else {
$this->_lastAffectedRows = 0;
odbc_binmode($stmtid,$this->binmode);
odbc_longreadlen($stmtid,$this->maxblobsize);
}
if ($this->_haserrorfunctions) {
$this->_errorMsg = '';
$this->_errorCode = 0;
} else
$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
} else {
if ($this->_haserrorfunctions) {
$this->_errorMsg = odbc_errormsg();
$this->_errorCode = odbc_error();
} else
$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
}
return $stmtid;
}
/*
Insert a null into the blob field of the table first.
Then use UpdateBlob to store the blob.
Usage:
$conn->Execute('INSERT INTO blobtable (id, blobcol) VALUES (1, null)');
$conn->UpdateBlob('blobtable','blobcol',$blob,'id=1');
*/
function UpdateBlob($table,$column,$val,$where,$blobtype='BLOB')
{
return $this->Execute("UPDATE $table SET $column=? WHERE $where",array($val)) != false;
}
// returns true or false
function _close()
{
$ret = @odbc_close($this->_connectionID);
$this->_connectionID = false;
return $ret;
}
function _affectedrows()
{
return $this->_lastAffectedRows;
}
}
/*--------------------------------------------------------------------------------------
Class Name: Recordset
--------------------------------------------------------------------------------------*/
class ADORecordSet_odbc extends ADORecordSet {
var $bind = false;
var $databaseType = "odbc";
var $dataProvider = "odbc";
var $useFetchArray;
var $_has_stupid_odbc_fetch_api_change;
function __construct($id,$mode=false)
{
if ($mode === false) {
global $ADODB_FETCH_MODE;
$mode = $ADODB_FETCH_MODE;
}
$this->fetchMode = $mode;
$this->_queryID = $id;
// the following is required for mysql odbc driver in 4.3.1 -- why?
$this->EOF = false;
$this->_currentRow = -1;
//parent::__construct($id);
}
// returns the field object
function FetchField($fieldOffset = -1)
{
$off=$fieldOffset+1; // offsets begin at 1
$o= new ADOFieldObject();
$o->name = @odbc_field_name($this->_queryID,$off);
$o->type = @odbc_field_type($this->_queryID,$off);
$o->max_length = @odbc_field_len($this->_queryID,$off);
if (ADODB_ASSOC_CASE == 0) $o->name = strtolower($o->name);
else if (ADODB_ASSOC_CASE == 1) $o->name = strtoupper($o->name);
return $o;
}
/* Use associative array to get fields array */
function Fields($colname)
{
if ($this->fetchMode & ADODB_FETCH_ASSOC) return $this->fields[$colname];
if (!$this->bind) {
$this->bind = array();
for ($i=0; $i < $this->_numOfFields; $i++) {
$o = $this->FetchField($i);
$this->bind[strtoupper($o->name)] = $i;
}
}
return $this->fields[$this->bind[strtoupper($colname)]];
}
function _initrs()
{
global $ADODB_COUNTRECS;
$this->_numOfRows = ($ADODB_COUNTRECS) ? @odbc_num_rows($this->_queryID) : -1;
$this->_numOfFields = @odbc_num_fields($this->_queryID);
// some silly drivers such as db2 as/400 and intersystems cache return _numOfRows = 0
if ($this->_numOfRows == 0) $this->_numOfRows = -1;
//$this->useFetchArray = $this->connection->useFetchArray;
$this->_has_stupid_odbc_fetch_api_change = ADODB_PHPVER >= 0x4200;
}
function _seek($row)
{
return false;
}
// speed up SelectLimit() by switching to ADODB_FETCH_NUM as ADODB_FETCH_ASSOC is emulated
function GetArrayLimit($nrows,$offset=-1)
{
if ($offset <= 0) {
$rs = $this->GetArray($nrows);
return $rs;
}
$savem = $this->fetchMode;
$this->fetchMode = ADODB_FETCH_NUM;
$this->Move($offset);
$this->fetchMode = $savem;
if ($this->fetchMode & ADODB_FETCH_ASSOC) {
$this->fields = $this->GetRowAssoc();
}
$results = array();
$cnt = 0;
while (!$this->EOF && $nrows != $cnt) {
$results[$cnt++] = $this->fields;
$this->MoveNext();
}
return $results;
}
function MoveNext()
{
if ($this->_numOfRows != 0 && !$this->EOF) {
$this->_currentRow++;
if( $this->_fetch() ) {
return true;
}
}
$this->fields = false;
$this->EOF = true;
return false;
}
function _fetch()
{
$this->fields = false;
if ($this->_has_stupid_odbc_fetch_api_change)
$rez = @odbc_fetch_into($this->_queryID,$this->fields);
else {
$row = 0;
$rez = @odbc_fetch_into($this->_queryID,$row,$this->fields);
}
if ($rez) {
if ($this->fetchMode & ADODB_FETCH_ASSOC) {
$this->fields = $this->GetRowAssoc();
}
return true;
}
return false;
}
function _close()
{
return @odbc_free_result($this->_queryID);
}
}