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<?php/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: *//*** The PEAR DB driver for PHP's dbase extension* for interacting with dBase 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 Tomas V.V. Cox <cox@idecnet.com>* @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: dbase.php,v 1.1 2005-03-30 08:50:33 jpm 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 dbase extension* for interacting with dBase databases** These methods overload the ones declared in DB_common.** @category Database* @package DB* @author Tomas V.V. Cox <cox@idecnet.com>* @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: 1.7.5* @link http://pear.php.net/package/DB*/class DB_dbase extends DB_common{// {{{ properties/*** The DB driver type (mysql, oci8, odbc, etc.)* @var string*/var $phptype = 'dbase';/*** The database syntax variant to be used (db2, access, etc.), if any* @var string*/var $dbsyntax = 'dbase';/*** 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' => false,'new_link' => false,'numrows' => true,'pconnect' => false,'prepare' => false,'ssl' => false,'transactions' => false,);/*** A mapping of native error codes to DB error codes* @var array*/var $errorcode_map = array();/*** The raw database connection created by PHP* @var resource*/var $connection;/*** The DSN information for connecting to a database* @var array*/var $dsn = array();/*** A means of emulating result resources* @var array*/var $res_row = array();/*** The quantity of results so far** For emulating result resources.** @var integer*/var $result = 0;/*** Maps dbase data type id's to human readable strings** The human readable values are based on the output of PHP's* dbase_get_header_info() function.** @var array* @since Property available since Release 1.7.0*/var $types = array('C' => 'character','D' => 'date','L' => 'boolean','M' => 'memo','N' => 'number',);// }}}// {{{ constructor/*** This constructor calls <kbd>$this->DB_common()</kbd>** @return void*/function DB_dbase(){$this->DB_common();}// }}}// {{{ connect()/*** Connect to the database and create it if it doesn't exist** Don't call this method directly. Use DB::connect() instead.** PEAR DB's dbase driver supports the following extra DSN options:* + mode An integer specifying the read/write mode to use* (0 = read only, 1 = write only, 2 = read/write).* Available since PEAR DB 1.7.0.* + fields An array of arrays that PHP's dbase_create() function needs* to create a new database. This information is used if the* dBase file specified in the "database" segment of the DSN* does not exist. For more info, see the PHP manual's* {@link http://php.net/dbase_create dbase_create()} page.* Available since PEAR DB 1.7.0.** Example of how to connect and establish a new dBase file if necessary:* <code>* require_once 'DB.php';** $dsn = array(* 'phptype' => 'dbase',* 'database' => '/path/and/name/of/dbase/file',* 'mode' => 2,* 'fields' => array(* array('a', 'N', 5, 0),* array('b', 'C', 40),* array('c', 'C', 255),* array('d', 'C', 20),* ),* );* $options = array(* 'debug' => 2,* 'portability' => DB_PORTABILITY_ALL,* );** $db =& DB::connect($dsn, $options);* if (PEAR::isError($db)) {* die($db->getMessage());* }* </code>** @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('dbase')) {return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);}$this->dsn = $dsn;if ($dsn['dbsyntax']) {$this->dbsyntax = $dsn['dbsyntax'];}/** Turn track_errors on for entire script since $php_errormsg* is the only way to find errors from the dbase extension.*/ini_set('track_errors', 1);$php_errormsg = '';if (!file_exists($dsn['database'])) {$this->dsn['mode'] = 2;if (empty($dsn['fields']) || !is_array($dsn['fields'])) {return $this->raiseError(DB_ERROR_CONNECT_FAILED,null, null, null,'the dbase file does not exist and '. 'it could not be created because '. 'the "fields" element of the DSN '. 'is not properly set');}$this->connection = @dbase_create($dsn['database'],$dsn['fields']);if (!$this->connection) {return $this->raiseError(DB_ERROR_CONNECT_FAILED,null, null, null,'the dbase file does not exist and '. 'the attempt to create it failed: '. $php_errormsg);}} else {if (!isset($this->dsn['mode'])) {$this->dsn['mode'] = 0;}$this->connection = @dbase_open($dsn['database'],$this->dsn['mode']);if (!$this->connection) {return $this->raiseError(DB_ERROR_CONNECT_FAILED,null, null, null,$php_errormsg);}}return DB_OK;}// }}}// {{{ disconnect()/*** Disconnects from the database server** @return bool TRUE on success, FALSE on failure*/function disconnect(){$ret = @dbase_close($this->connection);$this->connection = null;return $ret;}// }}}// {{{ &query()function &query($query = null){// emulate result resources$this->res_row[(int)$this->result] = 0;$tmp =& new DB_result($this, $this->result++);return $tmp;}// }}}// {{{ 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) {$rownum = $this->res_row[(int)$result]++;}if ($fetchmode & DB_FETCHMODE_ASSOC) {$arr = @dbase_get_record_with_names($this->connection, $rownum);if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {$arr = array_change_key_case($arr, CASE_LOWER);}} else {$arr = @dbase_get_record($this->connection, $rownum);}if (!$arr) {return null;}if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {$this->_rtrimArrayValues($arr);}if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {$this->_convertNullArrayValuesToEmpty($arr);}return DB_OK;}// }}}// {{{ 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 $result PHP's query result resource** @return int the number of columns. A DB_Error object on failure.** @see DB_result::numCols()*/function numCols($foo){return @dbase_numfields($this->connection);}// }}}// {{{ 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 $result PHP's query result resource** @return int the number of rows. A DB_Error object on failure.** @see DB_result::numRows()*/function numRows($foo){return @dbase_numrecords($this->connection);}// }}}// {{{ quoteSmart()/*** Formats input so it can be safely used in a query** @param mixed $in the data to be formatted** @return mixed the formatted data. The format depends on the input's* PHP type:* + null = the string <samp>NULL</samp>* + boolean = <samp>T</samp> if true or* <samp>F</samp> if false. Use the <kbd>Logical</kbd>* data type.* + integer or double = the unquoted number* + other (including strings and numeric strings) =* the data with single quotes escaped by preceeding* single quotes then the whole string is encapsulated* between single quotes** @see DB_common::quoteSmart()* @since Method available since Release 1.6.0*/function quoteSmart($in){if (is_int($in) || is_double($in)) {return $in;} elseif (is_bool($in)) {return $in ? 'T' : 'F';} elseif (is_null($in)) {return 'NULL';} else {return "'" . $this->escapeSimple($in) . "'";}}// }}}// {{{ tableInfo()/*** Returns information about the current database** @param mixed $result THIS IS UNUSED IN DBASE. The current database* is examined regardless of what is provided here.* @param int $mode a valid tableInfo mode** @return array an associative array with the information requested.* A DB_Error object on failure.** @see DB_common::tableInfo()* @since Method available since Release 1.7.0*/function tableInfo($result = null, $mode = null){if (function_exists('dbase_get_header_info')) {$id = @dbase_get_header_info($this->connection);if (!$id && $php_errormsg) {return $this->raiseError(DB_ERROR,null, null, null,$php_errormsg);}} else {/** This segment for PHP 4 is loosely based on code by* Hadi Rusiah <deegos@yahoo.com> in the comments on* the dBase reference page in the PHP manual.*/$db = @fopen($this->dsn['database'], 'r');if (!$db) {return $this->raiseError(DB_ERROR_CONNECT_FAILED,null, null, null,$php_errormsg);}$id = array();$i = 0;$line = fread($db, 32);while (!feof($db)) {$line = fread($db, 32);if (substr($line, 0, 1) == chr(13)) {break;} else {$pos = strpos(substr($line, 0, 10), chr(0));$pos = ($pos == 0 ? 10 : $pos);$id[$i] = array('name' => substr($line, 0, $pos),'type' => $this->types[substr($line, 11, 1)],'length' => ord(substr($line, 16, 1)),'precision' => ord(substr($line, 17, 1)),);}$i++;}fclose($db);}if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {$case_func = 'strtolower';} else {$case_func = 'strval';}$res = array();$count = count($id);if ($mode) {$res['num_fields'] = $count;}for ($i = 0; $i < $count; $i++) {$res[$i] = array('table' => $this->dsn['database'],'name' => $case_func($id[$i]['name']),'type' => $id[$i]['type'],'len' => $id[$i]['length'],'flags' => '');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;}}return $res;}// }}}}/** Local variables:* tab-width: 4* c-basic-offset: 4* End:*/?>