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<?php // +----------------------------------------------------------------------+ // \| PHP versions 4 and 5 \| // +----------------------------------------------------------------------+ // \| Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox, \| // \| Stig. S. Bakken, Lukas Smith \| // \| All rights reserved. \| // +----------------------------------------------------------------------+ // \| MDB2 is a merge of PEAR DB and Metabases that provides a unified DB \| // \| API as well as database abstraction for PHP applications. \| // \| This LICENSE is in the BSD license style. \| // \| \| // \| Redistribution and use in source and binary forms, with or without \| // \| modification, are permitted provided that the following conditions \| // \| are met: \| // \| \| // \| Redistributions of source code must retain the above copyright \| // \| notice, this list of conditions and the following disclaimer. \| // \| \| // \| Redistributions in binary form must reproduce the above copyright \| // \| notice, this list of conditions and the following disclaimer in the \| // \| documentation and/or other materials provided with the distribution. \| // \| \| // \| Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, \| // \| Lukas Smith nor the names of his contributors may be used to endorse \| // \| or promote products derived from this software without specific prior\| // \| written permission. \| // \| \| // \| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \| // \| "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT \| // \| LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS \| // \| FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE \| // \| REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, \| // \| INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, \| // \| BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS\| // \| OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED \| // \| AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT \| // \| LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY\| // \| WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE \| // \| POSSIBILITY OF SUCH DAMAGE. \| // +----------------------------------------------------------------------+ // \| Author: Lukas Smith <smith@pooteeweet.org> \| // +----------------------------------------------------------------------+ // // $Id: Extended.php,v 1.58 2007/01/06 21:40:52 quipo Exp $ /** * @package MDB2 * @category Database * @author Lukas Smith <smith@pooteeweet.org> / /* * Used by autoPrepare() / define('MDB2_AUTOQUERY_INSERT', 1); define('MDB2_AUTOQUERY_UPDATE', 2); define('MDB2_AUTOQUERY_DELETE', 3); define('MDB2_AUTOQUERY_SELECT', 4); /* * MDB2_Extended: class which adds several high level methods to MDB2 * * @package MDB2 * @category Database * @author Lukas Smith <smith@pooteeweet.org> / class MDB2_Extended extends MDB2_Module_Common { // {{{ autoPrepare() /* * Generate an insert, update or delete query and call prepare() on it * * @param string table * @param array the fields names * @param int type of query to build * MDB2_AUTOQUERY_INSERT * MDB2_AUTOQUERY_UPDATE * MDB2_AUTOQUERY_DELETE * MDB2_AUTOQUERY_SELECT * @param string (in case of update and delete queries, this string will be put after the sql WHERE statement) * @param array that contains the types of the placeholders * @param mixed array that contains the types of the columns in * the result set or MDB2_PREPARE_RESULT, if set to * MDB2_PREPARE_MANIP the query is handled as a manipulation query * * @return resource handle for the query * @see buildManipSQL * @access public / function autoPrepare($table, $table_fields, $mode = MDB2_AUTOQUERY_INSERT, $where = false, $types = null, $result_types = MDB2_PREPARE_MANIP) { $query = $this->buildManipSQL($table, $table_fields, $mode, $where); if (PEAR::isError($query)) { return $query; } $db =& $this->getDBInstance(); if (PEAR::isError($db)) { return $db; } return $db->prepare($query, $types, $result_types); } // }}} // {{{ autoExecute() /* * Generate an insert, update or delete query and call prepare() and execute() on it * * @param string name of the table * @param array assoc ($key=>$value) where $key is a field name and $value its value * @param int type of query to build * MDB2_AUTOQUERY_INSERT * MDB2_AUTOQUERY_UPDATE * MDB2_AUTOQUERY_DELETE * MDB2_AUTOQUERY_SELECT * @param string (in case of update and delete queries, this string will be put after the sql WHERE statement) * @param array that contains the types of the placeholders * @param string which specifies which result class to use * @param mixed array that contains the types of the columns in * the result set or MDB2_PREPARE_RESULT, if set to * MDB2_PREPARE_MANIP the query is handled as a manipulation query * * @return bool\|MDB2_Error true on success, a MDB2 error on failure * @see buildManipSQL * @see autoPrepare * @access public / function &autoExecute($table, $fields_values, $mode = MDB2_AUTOQUERY_INSERT, $where = false, $types = null, $result_class = true, $result_types = MDB2_PREPARE_MANIP) { $fields_values = (array)$fields_values; if ($mode == MDB2_AUTOQUERY_SELECT) { if (is_array($result_types)) { $keys = array_keys($result_types); } elseif (!empty($fields_values)) { $keys = $fields_values; } else { $keys = array(); } } else { $keys = array_keys($fields_values); } $params = array_values($fields_values); if (empty($params)) { $query = $this->buildManipSQL($table, $keys, $mode, $where); $db =& $this->getDBInstance(); if (PEAR::isError($db)) { return $db; } if ($mode == MDB2_AUTOQUERY_SELECT) { $result =& $db->query($query, $result_types, $result_class); } else { $result = $db->exec($query); } } else { $stmt = $this->autoPrepare($table, $keys, $mode, $where, $types, $result_types); if (PEAR::isError($stmt)) { return $stmt; } $result =& $stmt->execute($params, $result_class); $stmt->free(); } return $result; } // }}} // {{{ buildManipSQL() /* * Make automaticaly an sql query for prepare() * * Example : buildManipSQL('table_sql', array('field1', 'field2', 'field3'), MDB2_AUTOQUERY_INSERT) * will return the string : INSERT INTO table_sql (field1,field2,field3) VALUES (?,?,?) * NB : - This belongs more to a SQL Builder class, but this is a simple facility * - Be carefull ! If you don't give a $where param with an UPDATE/DELETE query, all * the records of the table will be updated/deleted ! * * @param string name of the table * @param ordered array containing the fields names * @param int type of query to build * MDB2_AUTOQUERY_INSERT * MDB2_AUTOQUERY_UPDATE * MDB2_AUTOQUERY_DELETE * MDB2_AUTOQUERY_SELECT * @param string (in case of update and delete queries, this string will be put after the sql WHERE statement) * * @return string sql query for prepare() * @access public / function buildManipSQL($table, $table_fields, $mode, $where = false) { $db =& $this->getDBInstance(); if (PEAR::isError($db)) { return $db; } if ($db->options['quote_identifier']) { $table = $db->quoteIdentifier($table); } if (!empty($table_fields) && $db->options['quote_identifier']) { foreach ($table_fields as $key => $field) { $table_fields[$key] = $db->quoteIdentifier($field); } } if ($where !== false && !is_null($where)) { if (is_array($where)) { $where = implode(' AND ', $where); } $where = ' WHERE '.$where; } switch ($mode) { case MDB2_AUTOQUERY_INSERT: if (empty($table_fields)) { return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, 'Insert requires table fields', __FUNCTION__); } $cols = implode(', ', $table_fields); $values = '?'.str_repeat(', ?', (count($table_fields) - 1)); return 'INSERT INTO '.$table.' ('.$cols.') VALUES ('.$values.')'; break; case MDB2_AUTOQUERY_UPDATE: if (empty($table_fields)) { return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, 'Update requires table fields', __FUNCTION__); } $set = implode(' = ?, ', $table_fields).' = ?'; $sql = 'UPDATE '.$table.' SET '.$set.$where; return $sql; break; case MDB2_AUTOQUERY_DELETE: $sql = 'DELETE FROM '.$table.$where; return $sql; break; case MDB2_AUTOQUERY_SELECT: $cols = !empty($table_fields) ? implode(', ', $table_fields) : ''; $sql = 'SELECT '.$cols.' FROM '.$table.$where; return $sql; break; } return $db->raiseError(MDB2_ERROR_SYNTAX, null, null, 'Non existant mode', __FUNCTION__); } // }}} // {{{ limitQuery() /** * Generates a limited query * * @param string query * @param array that contains the types of the columns in the result set * @param integer the numbers of rows to fetch * @param integer the row to start to fetching * @param string which specifies which result class to use * @param mixed string which specifies which class to wrap results in * * @return MDB2_Result\|MDB2_Error result set on success, a MDB2 error on failure * @access public / function &limitQuery($query, $types, $limit, $offset = 0, $result_class = true, $result_wrap_class = false) { $db =& $this->getDBInstance(); if (PEAR::isError($db)) { return $db; } $result = $db->setLimit($limit, $offset); if (PEAR::isError($result)) { return $result; } $result =& $db->query($query, $types, $result_class, $result_wrap_class); return $result; } // }}} // {{{ execParam() /* * Execute a parameterized DML statement. * * @param string the SQL query * @param array if supplied, prepare/execute will be used * with this array as execute parameters * @param array that contains the types of the values defined in $params * * @return int\|MDB2_Error affected rows on success, a MDB2 error on failure * @access public / function execParam($query, $params = array(), $param_types = null) { $db =& $this->getDBInstance(); if (PEAR::isError($db)) { return $db; } settype($params, 'array'); if (empty($params)) { return $db->exec($query); } $stmt = $db->prepare($query, $param_types, MDB2_PREPARE_MANIP); if (PEAR::isError($stmt)) { return $stmt; } $result = $stmt->execute($params); if (PEAR::isError($result)) { return $result; } $stmt->free(); return $result; } // }}} // {{{ getOne() /* * Fetch the first column of the first row of data returned from a query. * Takes care of doing the query and freeing the results when finished. * * @param string the SQL query * @param string that contains the type of the column in the result set * @param array if supplied, prepare/execute will be used * with this array as execute parameters * @param array that contains the types of the values defined in $params * @param int\|string which column to return * * @return scalar\|MDB2_Error data on success, a MDB2 error on failure * @access public / function getOne($query, $type = null, $params = array(), $param_types = null, $colnum = 0) { $db =& $this->getDBInstance(); if (PEAR::isError($db)) { return $db; } settype($params, 'array'); settype($type, 'array'); if (empty($params)) { return $db->queryOne($query, $type, $colnum); } $stmt = $db->prepare($query, $param_types, $type); if (PEAR::isError($stmt)) { return $stmt; } $result = $stmt->execute($params); if (!MDB2::isResultCommon($result)) { return $result; } $one = $result->fetchOne($colnum); $stmt->free(); $result->free(); return $one; } // }}} // {{{ getRow() /* * Fetch the first row of data returned from a query. Takes care * of doing the query and freeing the results when finished. * * @param string the SQL query * @param array that contains the types of the columns in the result set * @param array if supplied, prepare/execute will be used * with this array as execute parameters * @param array that contains the types of the values defined in $params * @param int the fetch mode to use * * @return array\|MDB2_Error data on success, a MDB2 error on failure * @access public / function getRow($query, $types = null, $params = array(), $param_types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT) { $db =& $this->getDBInstance(); if (PEAR::isError($db)) { return $db; } settype($params, 'array'); if (empty($params)) { return $db->queryRow($query, $types, $fetchmode); } $stmt = $db->prepare($query, $param_types, $types); if (PEAR::isError($stmt)) { return $stmt; } $result = $stmt->execute($params); if (!MDB2::isResultCommon($result)) { return $result; } $row = $result->fetchRow($fetchmode); $stmt->free(); $result->free(); return $row; } // }}} // {{{ getCol() /* * Fetch a single column from a result set and return it as an * indexed array. * * @param string the SQL query * @param string that contains the type of the column in the result set * @param array if supplied, prepare/execute will be used * with this array as execute parameters * @param array that contains the types of the values defined in $params * @param int\|string which column to return * * @return array\|MDB2_Error data on success, a MDB2 error on failure * @access public / function getCol($query, $type = null, $params = array(), $param_types = null, $colnum = 0) { $db =& $this->getDBInstance(); if (PEAR::isError($db)) { return $db; } settype($params, 'array'); settype($type, 'array'); if (empty($params)) { return $db->queryCol($query, $type, $colnum); } $stmt = $db->prepare($query, $param_types, $type); if (PEAR::isError($stmt)) { return $stmt; } $result = $stmt->execute($params); if (!MDB2::isResultCommon($result)) { return $result; } $col = $result->fetchCol($colnum); $stmt->free(); $result->free(); return $col; } // }}} // {{{ getAll() /* * Fetch all the rows returned from a query. * * @param string the SQL query * @param array that contains the types of the columns in the result set * @param array if supplied, prepare/execute will be used * with this array as execute parameters * @param array that contains the types of the values defined in $params * @param int the fetch mode to use * @param bool if set to true, the $all will have the first * column as its first dimension * @param bool $force_array used only when the query returns exactly * two columns. If true, the values of the returned array will be * one-element arrays instead of scalars. * @param bool $group if true, the values of the returned array is * wrapped in another array. If the same key value (in the first * column) repeats itself, the values will be appended to this array * instead of overwriting the existing values. * * @return array\|MDB2_Error data on success, a MDB2 error on failure * @access public / function getAll($query, $types = null, $params = array(), $param_types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT, $rekey = false, $force_array = false, $group = false) { $db =& $this->getDBInstance(); if (PEAR::isError($db)) { return $db; } settype($params, 'array'); if (empty($params)) { return $db->queryAll($query, $types, $fetchmode, $rekey, $force_array, $group); } $stmt = $db->prepare($query, $param_types, $types); if (PEAR::isError($stmt)) { return $stmt; } $result = $stmt->execute($params); if (!MDB2::isResultCommon($result)) { return $result; } $all = $result->fetchAll($fetchmode, $rekey, $force_array, $group); $stmt->free(); $result->free(); return $all; } // }}} // {{{ getAssoc() /* * Fetch the entire result set of a query and return it as an * associative array using the first column as the key. * * If the result set contains more than two columns, the value * will be an array of the values from column 2-n. If the result * set contains only two columns, the returned value will be a * scalar with the value of the second column (unless forced to an * array with the $force_array parameter). A MDB2 error code is * returned on errors. If the result set contains fewer than two * columns, a MDB2_ERROR_TRUNCATED error is returned. * * For example, if the table 'mytable' contains: * <pre> * ID TEXT DATE * -------------------------------- * 1 'one' 944679408 * 2 'two' 944679408 * 3 'three' 944679408 * </pre> * Then the call getAssoc('SELECT id,text FROM mytable') returns: * <pre> * array( * '1' => 'one', * '2' => 'two', * '3' => 'three', * ) * </pre> * ...while the call getAssoc('SELECT id,text,date FROM mytable') returns: * <pre> * array( * '1' => array('one', '944679408'), * '2' => array('two', '944679408'), * '3' => array('three', '944679408') * ) * </pre> * * If the more than one row occurs with the same value in the * first column, the last row overwrites all previous ones by * default. Use the $group parameter if you don't want to * overwrite like this. Example: * <pre> * getAssoc('SELECT category,id,name FROM mytable', null, null * MDB2_FETCHMODE_ASSOC, false, true) returns: * array( * '1' => array(array('id' => '4', 'name' => 'number four'), * array('id' => '6', 'name' => 'number six') * ), * '9' => array(array('id' => '4', 'name' => 'number four'), * array('id' => '6', 'name' => 'number six') * ) * ) * </pre> * * Keep in mind that database functions in PHP usually return string * values for results regardless of the database's internal type. * * @param string the SQL query * @param array that contains the types of the columns in the result set * @param array if supplied, prepare/execute will be used * with this array as execute parameters * @param array that contains the types of the values defined in $params * @param bool $force_array used only when the query returns * exactly two columns. If TRUE, the values of the returned array * will be one-element arrays instead of scalars. * @param bool $group if TRUE, the values of the returned array * is wrapped in another array. If the same key value (in the first * column) repeats itself, the values will be appended to this array * instead of overwriting the existing values. * * @return array\|MDB2_Error data on success, a MDB2 error on failure * @access public / function getAssoc($query, $types = null, $params = array(), $param_types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT, $force_array = false, $group = false) { $db =& $this->getDBInstance(); if (PEAR::isError($db)) { return $db; } settype($params, 'array'); if (empty($params)) { return $db->queryAll($query, $types, $fetchmode, true, $force_array, $group); } $stmt = $db->prepare($query, $param_types, $types); if (PEAR::isError($stmt)) { return $stmt; } $result = $stmt->execute($params); if (!MDB2::isResultCommon($result)) { return $result; } $all = $result->fetchAll($fetchmode, true, $force_array, $group); $stmt->free(); $result->free(); return $all; } // }}} // {{{ executeMultiple() /* * This function does several execute() calls on the same statement handle. * $params must be an array indexed numerically from 0, one execute call is * done for every 'row' in the array. * * If an error occurs during execute(), executeMultiple() does not execute * the unfinished rows, but rather returns that error. * * @param resource query handle from prepare() * @param array numeric array containing the data to insert into the query * * @return bool\|MDB2_Error true on success, a MDB2 error on failure * @access public * @see prepare(), execute() / function executeMultiple(&$stmt, $params = null) { for ($i = 0, $j = count($params); $i < $j; $i++) { $result = $stmt->execute($params[$i]); if (PEAR::isError($result)) { return $result; } } return MDB2_OK; } // }}} // {{{ getBeforeID() /* * Returns the next free id of a sequence if the RDBMS * does not support auto increment * * @param string name of the table into which a new row was inserted * @param string name of the field into which a new row was inserted * @param bool when true the sequence is automatic created, if it not exists * @param bool if the returned value should be quoted * * @return int\|MDB2_Error id on success, a MDB2 error on failure * @access public / function getBeforeID($table, $field = null, $ondemand = true, $quote = true) { $db =& $this->getDBInstance(); if (PEAR::isError($db)) { return $db; } if ($db->supports('auto_increment') !== true) { $seq = $table.(empty($field) ? '' : '_'.$field); $id = $db->nextID($seq, $ondemand); if (!$quote \|\| PEAR::isError($id)) { return $id; } return $db->quote($id, 'integer'); } elseif (!$quote) { return null; } return 'NULL'; } // }}} // {{{ getAfterID() /* * Returns the autoincrement ID if supported or $id * * @param mixed value as returned by getBeforeId() * @param string name of the table into which a new row was inserted * @param string name of the field into which a new row was inserted * * @return int\|MDB2_Error id on success, a MDB2 error on failure * @access public */ function getAfterID($id, $table, $field = null) { $db =& $this->getDBInstance(); if (PEAR::isError($db)) { return $db; } if ($db->supports('auto_increment') !== true) { return $id; } return $db->lastInsertID($table, $field); } // }}} } ?>

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