New file |
0,0 → 1,1034 |
<?php |
|
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ |
|
/** |
* The PEAR DB driver for PHP's mysql extension |
* for interacting with MySQL databases |
* |
* PHP versions 4 and 5 |
* |
* LICENSE: This source file is subject to version 3.0 of the PHP license |
* that is available through the world-wide-web at the following URI: |
* http://www.php.net/license/3_0.txt. If you did not receive a copy of |
* the PHP License and are unable to obtain it through the web, please |
* send a note to license@php.net so we can mail you a copy immediately. |
* |
* @category Database |
* @package DB |
* @author Stig Bakken <ssb@php.net> |
* @author Daniel Convissor <danielc@php.net> |
* @copyright 1997-2005 The PHP Group |
* @license http://www.php.net/license/3_0.txt PHP License 3.0 |
* @version CVS: $Id: mysql.php,v 1.117 2005/03/29 15:03:26 danielc Exp $ |
* @link http://pear.php.net/package/DB |
*/ |
|
/** |
* Obtain the DB_common class so it can be extended from |
*/ |
require_once 'DB/common.php'; |
|
/** |
* The methods PEAR DB uses to interact with PHP's mysql extension |
* for interacting with MySQL databases |
* |
* These methods overload the ones declared in DB_common. |
* |
* @category Database |
* @package DB |
* @author Stig Bakken <ssb@php.net> |
* @author Daniel Convissor <danielc@php.net> |
* @copyright 1997-2005 The PHP Group |
* @license http://www.php.net/license/3_0.txt PHP License 3.0 |
* @version Release: 1.7.6 |
* @link http://pear.php.net/package/DB |
*/ |
class DB_mysql extends DB_common |
{ |
// {{{ properties |
|
/** |
* The DB driver type (mysql, oci8, odbc, etc.) |
* @var string |
*/ |
var $phptype = 'mysql'; |
|
/** |
* The database syntax variant to be used (db2, access, etc.), if any |
* @var string |
*/ |
var $dbsyntax = 'mysql'; |
|
/** |
* The capabilities of this DB implementation |
* |
* The 'new_link' element contains the PHP version that first provided |
* new_link support for this DBMS. Contains false if it's unsupported. |
* |
* Meaning of the 'limit' element: |
* + 'emulate' = emulate with fetch row by number |
* + 'alter' = alter the query |
* + false = skip rows |
* |
* @var array |
*/ |
var $features = array( |
'limit' => 'alter', |
'new_link' => '4.2.0', |
'numrows' => true, |
'pconnect' => true, |
'prepare' => false, |
'ssl' => false, |
'transactions' => true, |
); |
|
/** |
* A mapping of native error codes to DB error codes |
* @var array |
*/ |
var $errorcode_map = array( |
1004 => DB_ERROR_CANNOT_CREATE, |
1005 => DB_ERROR_CANNOT_CREATE, |
1006 => DB_ERROR_CANNOT_CREATE, |
1007 => DB_ERROR_ALREADY_EXISTS, |
1008 => DB_ERROR_CANNOT_DROP, |
1022 => DB_ERROR_ALREADY_EXISTS, |
1044 => DB_ERROR_ACCESS_VIOLATION, |
1046 => DB_ERROR_NODBSELECTED, |
1048 => DB_ERROR_CONSTRAINT, |
1049 => DB_ERROR_NOSUCHDB, |
1050 => DB_ERROR_ALREADY_EXISTS, |
1051 => DB_ERROR_NOSUCHTABLE, |
1054 => DB_ERROR_NOSUCHFIELD, |
1061 => DB_ERROR_ALREADY_EXISTS, |
1062 => DB_ERROR_ALREADY_EXISTS, |
1064 => DB_ERROR_SYNTAX, |
1091 => DB_ERROR_NOT_FOUND, |
1100 => DB_ERROR_NOT_LOCKED, |
1136 => DB_ERROR_VALUE_COUNT_ON_ROW, |
1142 => DB_ERROR_ACCESS_VIOLATION, |
1146 => DB_ERROR_NOSUCHTABLE, |
1216 => DB_ERROR_CONSTRAINT, |
1217 => DB_ERROR_CONSTRAINT, |
); |
|
/** |
* The raw database connection created by PHP |
* @var resource |
*/ |
var $connection; |
|
/** |
* The DSN information for connecting to a database |
* @var array |
*/ |
var $dsn = array(); |
|
|
/** |
* Should data manipulation queries be committed automatically? |
* @var bool |
* @access private |
*/ |
var $autocommit = true; |
|
/** |
* The quantity of transactions begun |
* |
* {@internal While this is private, it can't actually be designated |
* private in PHP 5 because it is directly accessed in the test suite.}} |
* |
* @var integer |
* @access private |
*/ |
var $transaction_opcount = 0; |
|
/** |
* The database specified in the DSN |
* |
* It's a fix to allow calls to different databases in the same script. |
* |
* @var string |
* @access private |
*/ |
var $_db = ''; |
|
|
// }}} |
// {{{ constructor |
|
/** |
* This constructor calls <kbd>$this->DB_common()</kbd> |
* |
* @return void |
*/ |
function DB_mysql() |
{ |
$this->DB_common(); |
} |
|
// }}} |
// {{{ connect() |
|
/** |
* Connect to the database server, log in and open the database |
* |
* Don't call this method directly. Use DB::connect() instead. |
* |
* PEAR DB's mysql driver supports the following extra DSN options: |
* + new_link If set to true, causes subsequent calls to connect() |
* to return a new connection link instead of the |
* existing one. WARNING: this is not portable to |
* other DBMS's. Available since PEAR DB 1.7.0. |
* + client_flags Any combination of MYSQL_CLIENT_* constants. |
* Only used if PHP is at version 4.3.0 or greater. |
* Available since PEAR DB 1.7.0. |
* |
* @param array $dsn the data source name |
* @param bool $persistent should the connection be persistent? |
* |
* @return int DB_OK on success. A DB_Error object on failure. |
*/ |
function connect($dsn, $persistent = false) |
{ |
if (!PEAR::loadExtension('mysql')) { |
return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); |
} |
|
$this->dsn = $dsn; |
if ($dsn['dbsyntax']) { |
$this->dbsyntax = $dsn['dbsyntax']; |
} |
|
$params = array(); |
if ($dsn['protocol'] && $dsn['protocol'] == 'unix') { |
$params[0] = ':' . $dsn['socket']; |
} else { |
$params[0] = $dsn['hostspec'] ? $dsn['hostspec'] |
: 'localhost'; |
if ($dsn['port']) { |
$params[0] .= ':' . $dsn['port']; |
} |
} |
$params[] = $dsn['username'] ? $dsn['username'] : null; |
$params[] = $dsn['password'] ? $dsn['password'] : null; |
|
if (!$persistent) { |
if (isset($dsn['new_link']) |
&& ($dsn['new_link'] == 'true' || $dsn['new_link'] === true)) |
{ |
$params[] = true; |
} else { |
$params[] = false; |
} |
} |
if (version_compare(phpversion(), '4.3.0', '>=')) { |
$params[] = isset($dsn['client_flags']) |
? $dsn['client_flags'] : null; |
} |
|
$connect_function = $persistent ? 'mysql_pconnect' : 'mysql_connect'; |
|
$ini = ini_get('track_errors'); |
$php_errormsg = ''; |
if ($ini) { |
$this->connection = @call_user_func_array($connect_function, |
$params); |
} else { |
ini_set('track_errors', 1); |
$this->connection = @call_user_func_array($connect_function, |
$params); |
ini_set('track_errors', $ini); |
} |
|
if (!$this->connection) { |
if (($err = @mysql_error()) != '') { |
return $this->raiseError(DB_ERROR_CONNECT_FAILED, |
null, null, null, |
$err); |
} else { |
return $this->raiseError(DB_ERROR_CONNECT_FAILED, |
null, null, null, |
$php_errormsg); |
} |
} |
|
if ($dsn['database']) { |
if (!@mysql_select_db($dsn['database'], $this->connection)) { |
return $this->mysqlRaiseError(); |
} |
$this->_db = $dsn['database']; |
} |
|
return DB_OK; |
} |
|
// }}} |
// {{{ disconnect() |
|
/** |
* Disconnects from the database server |
* |
* @return bool TRUE on success, FALSE on failure |
*/ |
function disconnect() |
{ |
$ret = @mysql_close($this->connection); |
$this->connection = null; |
return $ret; |
} |
|
// }}} |
// {{{ simpleQuery() |
|
/** |
* Sends a query to the database server |
* |
* Generally uses mysql_query(). If you want to use |
* mysql_unbuffered_query() set the "result_buffering" option to 0 using |
* setOptions(). This option was added in Release 1.7.0. |
* |
* @param string the SQL query string |
* |
* @return mixed + a PHP result resrouce for successful SELECT queries |
* + the DB_OK constant for other successful queries |
* + a DB_Error object on failure |
*/ |
function simpleQuery($query) |
{ |
$ismanip = DB::isManip($query); |
$this->last_query = $query; |
$query = $this->modifyQuery($query); |
if ($this->_db) { |
if (!@mysql_select_db($this->_db, $this->connection)) { |
return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED); |
} |
} |
if (!$this->autocommit && $ismanip) { |
if ($this->transaction_opcount == 0) { |
$result = @mysql_query('SET AUTOCOMMIT=0', $this->connection); |
$result = @mysql_query('BEGIN', $this->connection); |
if (!$result) { |
return $this->mysqlRaiseError(); |
} |
} |
$this->transaction_opcount++; |
} |
if (!$this->options['result_buffering']) { |
$result = @mysql_unbuffered_query($query, $this->connection); |
} else { |
$result = @mysql_query($query, $this->connection); |
} |
if (!$result) { |
return $this->mysqlRaiseError(); |
} |
if (is_resource($result)) { |
return $result; |
} |
return DB_OK; |
} |
|
// }}} |
// {{{ nextResult() |
|
/** |
* Move the internal mysql result pointer to the next available result |
* |
* This method has not been implemented yet. |
* |
* @param a valid sql result resource |
* |
* @return false |
*/ |
function nextResult($result) |
{ |
return false; |
} |
|
// }}} |
// {{{ fetchInto() |
|
/** |
* Places a row from the result set into the given array |
* |
* Formating of the array and the data therein are configurable. |
* See DB_result::fetchInto() for more information. |
* |
* This method is not meant to be called directly. Use |
* DB_result::fetchInto() instead. It can't be declared "protected" |
* because DB_result is a separate object. |
* |
* @param resource $result the query result resource |
* @param array $arr the referenced array to put the data in |
* @param int $fetchmode how the resulting array should be indexed |
* @param int $rownum the row number to fetch (0 = first row) |
* |
* @return mixed DB_OK on success, NULL when the end of a result set is |
* reached or on failure |
* |
* @see DB_result::fetchInto() |
*/ |
function fetchInto($result, &$arr, $fetchmode, $rownum = null) |
{ |
if ($rownum !== null) { |
if (!@mysql_data_seek($result, $rownum)) { |
return null; |
} |
} |
if ($fetchmode & DB_FETCHMODE_ASSOC) { |
$arr = @mysql_fetch_array($result, MYSQL_ASSOC); |
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) { |
$arr = array_change_key_case($arr, CASE_LOWER); |
} |
} else { |
$arr = @mysql_fetch_row($result); |
} |
if (!$arr) { |
return null; |
} |
if ($this->options['portability'] & DB_PORTABILITY_RTRIM) { |
/* |
* Even though this DBMS already trims output, we do this because |
* a field might have intentional whitespace at the end that |
* gets removed by DB_PORTABILITY_RTRIM under another driver. |
*/ |
$this->_rtrimArrayValues($arr); |
} |
if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) { |
$this->_convertNullArrayValuesToEmpty($arr); |
} |
return DB_OK; |
} |
|
// }}} |
// {{{ freeResult() |
|
/** |
* Deletes the result set and frees the memory occupied by the result set |
* |
* This method is not meant to be called directly. Use |
* DB_result::free() instead. It can't be declared "protected" |
* because DB_result is a separate object. |
* |
* @param resource $result PHP's query result resource |
* |
* @return bool TRUE on success, FALSE if $result is invalid |
* |
* @see DB_result::free() |
*/ |
function freeResult($result) |
{ |
return @mysql_free_result($result); |
} |
|
// }}} |
// {{{ numCols() |
|
/** |
* Gets the number of columns in a result set |
* |
* This method is not meant to be called directly. Use |
* DB_result::numCols() instead. It can't be declared "protected" |
* because DB_result is a separate object. |
* |
* @param resource $result PHP's query result resource |
* |
* @return int the number of columns. A DB_Error object on failure. |
* |
* @see DB_result::numCols() |
*/ |
function numCols($result) |
{ |
$cols = @mysql_num_fields($result); |
if (!$cols) { |
return $this->mysqlRaiseError(); |
} |
return $cols; |
} |
|
// }}} |
// {{{ numRows() |
|
/** |
* Gets the number of rows in a result set |
* |
* This method is not meant to be called directly. Use |
* DB_result::numRows() instead. It can't be declared "protected" |
* because DB_result is a separate object. |
* |
* @param resource $result PHP's query result resource |
* |
* @return int the number of rows. A DB_Error object on failure. |
* |
* @see DB_result::numRows() |
*/ |
function numRows($result) |
{ |
$rows = @mysql_num_rows($result); |
if ($rows === null) { |
return $this->mysqlRaiseError(); |
} |
return $rows; |
} |
|
// }}} |
// {{{ autoCommit() |
|
/** |
* Enables or disables automatic commits |
* |
* @param bool $onoff true turns it on, false turns it off |
* |
* @return int DB_OK on success. A DB_Error object if the driver |
* doesn't support auto-committing transactions. |
*/ |
function autoCommit($onoff = false) |
{ |
// XXX if $this->transaction_opcount > 0, we should probably |
// issue a warning here. |
$this->autocommit = $onoff ? true : false; |
return DB_OK; |
} |
|
// }}} |
// {{{ commit() |
|
/** |
* Commits the current transaction |
* |
* @return int DB_OK on success. A DB_Error object on failure. |
*/ |
function commit() |
{ |
if ($this->transaction_opcount > 0) { |
if ($this->_db) { |
if (!@mysql_select_db($this->_db, $this->connection)) { |
return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED); |
} |
} |
$result = @mysql_query('COMMIT', $this->connection); |
$result = @mysql_query('SET AUTOCOMMIT=1', $this->connection); |
$this->transaction_opcount = 0; |
if (!$result) { |
return $this->mysqlRaiseError(); |
} |
} |
return DB_OK; |
} |
|
// }}} |
// {{{ rollback() |
|
/** |
* Reverts the current transaction |
* |
* @return int DB_OK on success. A DB_Error object on failure. |
*/ |
function rollback() |
{ |
if ($this->transaction_opcount > 0) { |
if ($this->_db) { |
if (!@mysql_select_db($this->_db, $this->connection)) { |
return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED); |
} |
} |
$result = @mysql_query('ROLLBACK', $this->connection); |
$result = @mysql_query('SET AUTOCOMMIT=1', $this->connection); |
$this->transaction_opcount = 0; |
if (!$result) { |
return $this->mysqlRaiseError(); |
} |
} |
return DB_OK; |
} |
|
// }}} |
// {{{ affectedRows() |
|
/** |
* Determines the number of rows affected by a data maniuplation query |
* |
* 0 is returned for queries that don't manipulate data. |
* |
* @return int the number of rows. A DB_Error object on failure. |
*/ |
function affectedRows() |
{ |
if (DB::isManip($this->last_query)) { |
return @mysql_affected_rows($this->connection); |
} else { |
return 0; |
} |
} |
|
// }}} |
// {{{ nextId() |
|
/** |
* Returns the next free id in a sequence |
* |
* @param string $seq_name name of the sequence |
* @param boolean $ondemand when true, the seqence is automatically |
* created if it does not exist |
* |
* @return int the next id number in the sequence. |
* A DB_Error object on failure. |
* |
* @see DB_common::nextID(), DB_common::getSequenceName(), |
* DB_mysql::createSequence(), DB_mysql::dropSequence() |
*/ |
function nextId($seq_name, $ondemand = true) |
{ |
$seqname = $this->getSequenceName($seq_name); |
do { |
$repeat = 0; |
$this->pushErrorHandling(PEAR_ERROR_RETURN); |
$result = $this->query("UPDATE ${seqname} ". |
'SET id=LAST_INSERT_ID(id+1)'); |
$this->popErrorHandling(); |
if ($result === DB_OK) { |
// COMMON CASE |
$id = @mysql_insert_id($this->connection); |
if ($id != 0) { |
return $id; |
} |
// EMPTY SEQ TABLE |
// Sequence table must be empty for some reason, so fill |
// it and return 1 and obtain a user-level lock |
$result = $this->getOne("SELECT GET_LOCK('${seqname}_lock',10)"); |
if (DB::isError($result)) { |
return $this->raiseError($result); |
} |
if ($result == 0) { |
// Failed to get the lock |
return $this->mysqlRaiseError(DB_ERROR_NOT_LOCKED); |
} |
|
// add the default value |
$result = $this->query("REPLACE INTO ${seqname} (id) VALUES (0)"); |
if (DB::isError($result)) { |
return $this->raiseError($result); |
} |
|
// Release the lock |
$result = $this->getOne('SELECT RELEASE_LOCK(' |
. "'${seqname}_lock')"); |
if (DB::isError($result)) { |
return $this->raiseError($result); |
} |
// We know what the result will be, so no need to try again |
return 1; |
|
} elseif ($ondemand && DB::isError($result) && |
$result->getCode() == DB_ERROR_NOSUCHTABLE) |
{ |
// ONDEMAND TABLE CREATION |
$result = $this->createSequence($seq_name); |
if (DB::isError($result)) { |
return $this->raiseError($result); |
} else { |
$repeat = 1; |
} |
|
} elseif (DB::isError($result) && |
$result->getCode() == DB_ERROR_ALREADY_EXISTS) |
{ |
// BACKWARDS COMPAT |
// see _BCsequence() comment |
$result = $this->_BCsequence($seqname); |
if (DB::isError($result)) { |
return $this->raiseError($result); |
} |
$repeat = 1; |
} |
} while ($repeat); |
|
return $this->raiseError($result); |
} |
|
// }}} |
// {{{ createSequence() |
|
/** |
* Creates a new sequence |
* |
* @param string $seq_name name of the new sequence |
* |
* @return int DB_OK on success. A DB_Error object on failure. |
* |
* @see DB_common::createSequence(), DB_common::getSequenceName(), |
* DB_mysql::nextID(), DB_mysql::dropSequence() |
*/ |
function createSequence($seq_name) |
{ |
$seqname = $this->getSequenceName($seq_name); |
$res = $this->query('CREATE TABLE ' . $seqname |
. ' (id INTEGER UNSIGNED AUTO_INCREMENT NOT NULL,' |
. ' PRIMARY KEY(id))'); |
if (DB::isError($res)) { |
return $res; |
} |
// insert yields value 1, nextId call will generate ID 2 |
$res = $this->query("INSERT INTO ${seqname} (id) VALUES (0)"); |
if (DB::isError($res)) { |
return $res; |
} |
// so reset to zero |
return $this->query("UPDATE ${seqname} SET id = 0"); |
} |
|
// }}} |
// {{{ dropSequence() |
|
/** |
* Deletes a sequence |
* |
* @param string $seq_name name of the sequence to be deleted |
* |
* @return int DB_OK on success. A DB_Error object on failure. |
* |
* @see DB_common::dropSequence(), DB_common::getSequenceName(), |
* DB_mysql::nextID(), DB_mysql::createSequence() |
*/ |
function dropSequence($seq_name) |
{ |
return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name)); |
} |
|
// }}} |
// {{{ _BCsequence() |
|
/** |
* Backwards compatibility with old sequence emulation implementation |
* (clean up the dupes) |
* |
* @param string $seqname the sequence name to clean up |
* |
* @return bool true on success. A DB_Error object on failure. |
* |
* @access private |
*/ |
function _BCsequence($seqname) |
{ |
// Obtain a user-level lock... this will release any previous |
// application locks, but unlike LOCK TABLES, it does not abort |
// the current transaction and is much less frequently used. |
$result = $this->getOne("SELECT GET_LOCK('${seqname}_lock',10)"); |
if (DB::isError($result)) { |
return $result; |
} |
if ($result == 0) { |
// Failed to get the lock, can't do the conversion, bail |
// with a DB_ERROR_NOT_LOCKED error |
return $this->mysqlRaiseError(DB_ERROR_NOT_LOCKED); |
} |
|
$highest_id = $this->getOne("SELECT MAX(id) FROM ${seqname}"); |
if (DB::isError($highest_id)) { |
return $highest_id; |
} |
// This should kill all rows except the highest |
// We should probably do something if $highest_id isn't |
// numeric, but I'm at a loss as how to handle that... |
$result = $this->query('DELETE FROM ' . $seqname |
. " WHERE id <> $highest_id"); |
if (DB::isError($result)) { |
return $result; |
} |
|
// If another thread has been waiting for this lock, |
// it will go thru the above procedure, but will have no |
// real effect |
$result = $this->getOne("SELECT RELEASE_LOCK('${seqname}_lock')"); |
if (DB::isError($result)) { |
return $result; |
} |
return true; |
} |
|
// }}} |
// {{{ quoteIdentifier() |
|
/** |
* Quotes a string so it can be safely used as a table or column name |
* |
* MySQL can't handle the backtick character (<kbd>`</kbd>) in |
* table or column names. |
* |
* @param string $str identifier name to be quoted |
* |
* @return string quoted identifier string |
* |
* @see DB_common::quoteIdentifier() |
* @since Method available since Release 1.6.0 |
*/ |
function quoteIdentifier($str) |
{ |
return '`' . $str . '`'; |
} |
|
// }}} |
// {{{ quote() |
|
/** |
* @deprecated Deprecated in release 1.6.0 |
*/ |
function quote($str) |
{ |
return $this->quoteSmart($str); |
} |
|
// }}} |
// {{{ escapeSimple() |
|
/** |
* Escapes a string according to the current DBMS's standards |
* |
* @param string $str the string to be escaped |
* |
* @return string the escaped string |
* |
* @see DB_common::quoteSmart() |
* @since Method available since Release 1.6.0 |
*/ |
function escapeSimple($str) |
{ |
if (function_exists('mysql_real_escape_string')) { |
return @mysql_real_escape_string($str, $this->connection); |
} else { |
return @mysql_escape_string($str); |
} |
} |
|
// }}} |
// {{{ modifyQuery() |
|
/** |
* Changes a query string for various DBMS specific reasons |
* |
* This little hack lets you know how many rows were deleted |
* when running a "DELETE FROM table" query. Only implemented |
* if the DB_PORTABILITY_DELETE_COUNT portability option is on. |
* |
* @param string $query the query string to modify |
* |
* @return string the modified query string |
* |
* @access protected |
* @see DB_common::setOption() |
*/ |
function modifyQuery($query) |
{ |
if ($this->options['portability'] & DB_PORTABILITY_DELETE_COUNT) { |
// "DELETE FROM table" gives 0 affected rows in MySQL. |
// This little hack lets you know how many rows were deleted. |
if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) { |
$query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/', |
'DELETE FROM \1 WHERE 1=1', $query); |
} |
} |
return $query; |
} |
|
// }}} |
// {{{ modifyLimitQuery() |
|
/** |
* Adds LIMIT clauses to a query string according to current DBMS standards |
* |
* @param string $query the query to modify |
* @param int $from the row to start to fetching (0 = the first row) |
* @param int $count the numbers of rows to fetch |
* @param mixed $params array, string or numeric data to be used in |
* execution of the statement. Quantity of items |
* passed must match quantity of placeholders in |
* query: meaning 1 placeholder for non-array |
* parameters or 1 placeholder per array element. |
* |
* @return string the query string with LIMIT clauses added |
* |
* @access protected |
*/ |
function modifyLimitQuery($query, $from, $count, $params = array()) |
{ |
if (DB::isManip($query)) { |
return $query . " LIMIT $count"; |
} else { |
return $query . " LIMIT $from, $count"; |
} |
} |
|
// }}} |
// {{{ mysqlRaiseError() |
|
/** |
* Produces a DB_Error object regarding the current problem |
* |
* @param int $errno if the error is being manually raised pass a |
* DB_ERROR* constant here. If this isn't passed |
* the error information gathered from the DBMS. |
* |
* @return object the DB_Error object |
* |
* @see DB_common::raiseError(), |
* DB_mysql::errorNative(), DB_common::errorCode() |
*/ |
function mysqlRaiseError($errno = null) |
{ |
if ($errno === null) { |
if ($this->options['portability'] & DB_PORTABILITY_ERRORS) { |
$this->errorcode_map[1022] = DB_ERROR_CONSTRAINT; |
$this->errorcode_map[1048] = DB_ERROR_CONSTRAINT_NOT_NULL; |
$this->errorcode_map[1062] = DB_ERROR_CONSTRAINT; |
} else { |
// Doing this in case mode changes during runtime. |
$this->errorcode_map[1022] = DB_ERROR_ALREADY_EXISTS; |
$this->errorcode_map[1048] = DB_ERROR_CONSTRAINT; |
$this->errorcode_map[1062] = DB_ERROR_ALREADY_EXISTS; |
} |
$errno = $this->errorCode(mysql_errno($this->connection)); |
} |
return $this->raiseError($errno, null, null, null, |
@mysql_errno($this->connection) . ' ** ' . |
@mysql_error($this->connection)); |
} |
|
// }}} |
// {{{ errorNative() |
|
/** |
* Gets the DBMS' native error code produced by the last query |
* |
* @return int the DBMS' error code |
*/ |
function errorNative() |
{ |
return @mysql_errno($this->connection); |
} |
|
// }}} |
// {{{ tableInfo() |
|
/** |
* Returns information about a table or a result set |
* |
* @param object|string $result DB_result object from a query or a |
* string containing the name of a table. |
* While this also accepts a query result |
* resource identifier, this behavior is |
* deprecated. |
* @param int $mode a valid tableInfo mode |
* |
* @return array an associative array with the information requested. |
* A DB_Error object on failure. |
* |
* @see DB_common::tableInfo() |
*/ |
function tableInfo($result, $mode = null) |
{ |
if (is_string($result)) { |
/* |
* Probably received a table name. |
* Create a result resource identifier. |
*/ |
$id = @mysql_list_fields($this->dsn['database'], |
$result, $this->connection); |
$got_string = true; |
} elseif (isset($result->result)) { |
/* |
* Probably received a result object. |
* Extract the result resource identifier. |
*/ |
$id = $result->result; |
$got_string = false; |
} else { |
/* |
* Probably received a result resource identifier. |
* Copy it. |
* Deprecated. Here for compatibility only. |
*/ |
$id = $result; |
$got_string = false; |
} |
|
if (!is_resource($id)) { |
return $this->mysqlRaiseError(DB_ERROR_NEED_MORE_DATA); |
} |
|
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) { |
$case_func = 'strtolower'; |
} else { |
$case_func = 'strval'; |
} |
|
$count = @mysql_num_fields($id); |
$res = array(); |
|
if ($mode) { |
$res['num_fields'] = $count; |
} |
|
for ($i = 0; $i < $count; $i++) { |
$res[$i] = array( |
'table' => $case_func(@mysql_field_table($id, $i)), |
'name' => $case_func(@mysql_field_name($id, $i)), |
'type' => @mysql_field_type($id, $i), |
'len' => @mysql_field_len($id, $i), |
'flags' => @mysql_field_flags($id, $i), |
); |
if ($mode & DB_TABLEINFO_ORDER) { |
$res['order'][$res[$i]['name']] = $i; |
} |
if ($mode & DB_TABLEINFO_ORDERTABLE) { |
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i; |
} |
} |
|
// free the result only if we were called on a table |
if ($got_string) { |
@mysql_free_result($id); |
} |
return $res; |
} |
|
// }}} |
// {{{ getSpecialQuery() |
|
/** |
* Obtains the query string needed for listing a given type of objects |
* |
* @param string $type the kind of objects you want to retrieve |
* |
* @return string the SQL query string or null if the driver doesn't |
* support the object type requested |
* |
* @access protected |
* @see DB_common::getListOf() |
*/ |
function getSpecialQuery($type) |
{ |
switch ($type) { |
case 'tables': |
return 'SHOW TABLES'; |
case 'users': |
return 'SELECT DISTINCT User FROM mysql.user'; |
case 'databases': |
return 'SHOW DATABASES'; |
default: |
return null; |
} |
} |
|
// }}} |
|
} |
|
/* |
* Local variables: |
* tab-width: 4 |
* c-basic-offset: 4 |
* End: |
*/ |
|
?> |