'%d' * * @since 2.8.0 * @see wpdb:prepare() * @see wpdb:insert() * @see wpdb:update() * @see wp_set_wpdb_vars() * @access public * @var array */ var $field_types = array(); /** * Database table columns charset * * @since 2.2.0 * @access public * @var string */ var $charset; /** * Database table columns collate * * @since 2.2.0 * @access public * @var string */ var $collate; /** * Whether to use mysql_real_escape_string * * @since 2.8.0 * @access public * @var bool */ var $real_escape = false; /** * Database Username * * @since 2.9.0 * @access private * @var string */ var $dbuser; /** * A textual description of the last query/get_row/get_var call * * @since 3.0.0 * @access public * @var string */ var $func_call; /** * Connects to the database server and selects a database * * PHP5 style constructor for compatibility with PHP5. Does * the actual setting up of the class properties and connection * to the database. * * @link http://core.trac.wordpress.org/ticket/3354 * @since 2.0.8 * * @param string $dbuser MySQL database user * @param string $dbpassword MySQL database password * @param string $dbname MySQL database name * @param string $dbhost MySQL database host */ function __construct( $dbuser, $dbpassword, $dbname, $dbhost ) { register_shutdown_function( array( &$this, '__destruct' ) ); if ( WP_DEBUG ) $this->show_errors(); $this->init_charset(); $this->dbuser = $dbuser; $this->dbpassword = $dbpassword; $this->dbname = $dbname; $this->dbhost = $dbhost; $this->db_connect(); } /** * PHP5 style destructor and will run when database object is destroyed. * * @see wpdb::__construct() * @since 2.0.8 * @return bool true */ function __destruct() { return true; } /** * Set $this->charset and $this->collate * * @since 3.1.0 */ function init_charset() { if ( function_exists('is_multisite') && is_multisite() ) { $this->charset = 'utf8'; if ( defined( 'DB_COLLATE' ) && DB_COLLATE ) $this->collate = DB_COLLATE; else $this->collate = 'utf8_general_ci'; } elseif ( defined( 'DB_COLLATE' ) ) { $this->collate = DB_COLLATE; } if ( defined( 'DB_CHARSET' ) ) $this->charset = DB_CHARSET; } /** * Sets the connection's character set. * * @since 3.1.0 * * @param resource $dbh The resource given by mysql_connect * @param string $charset The character set (optional) * @param string $collate The collation (optional) */ function set_charset($dbh, $charset = null, $collate = null) { if ( !isset($charset) ) $charset = $this->charset; if ( !isset($collate) ) $collate = $this->collate; if ( $this->has_cap( 'collation', $dbh ) && !empty( $charset ) ) { if ( function_exists( 'mysql_set_charset' ) && $this->has_cap( 'set_charset', $dbh ) ) { mysql_set_charset( $charset, $dbh ); $this->real_escape = true; } else { $query = $this->prepare( 'SET NAMES %s', $charset ); if ( ! empty( $collate ) ) $query .= $this->prepare( ' COLLATE %s', $collate ); mysql_query( $query, $dbh ); } } } /** * Sets the table prefix for the WordPress tables. * * @since 2.5.0 * * @param string $prefix Alphanumeric name for the new prefix. * @return string|WP_Error Old prefix or WP_Error on error */ function set_prefix( $prefix, $set_table_names = true ) { if ( preg_match( '|[^a-z0-9_]|i', $prefix ) ) return new WP_Error('invalid_db_prefix', /*WP_I18N_DB_BAD_PREFIX*/'不正なデータベース接頭辞'/*/WP_I18N_DB_BAD_PREFIX*/); $old_prefix = is_multisite() ? '' : $prefix; if ( isset( $this->base_prefix ) ) $old_prefix = $this->base_prefix; $this->base_prefix = $prefix; if ( $set_table_names ) { foreach ( $this->tables( 'global' ) as $table => $prefixed_table ) $this->$table = $prefixed_table; if ( is_multisite() && empty( $this->blogid ) ) return $old_prefix; $this->prefix = $this->get_blog_prefix(); foreach ( $this->tables( 'blog' ) as $table => $prefixed_table ) $this->$table = $prefixed_table; foreach ( $this->tables( 'old' ) as $table => $prefixed_table ) $this->$table = $prefixed_table; } return $old_prefix; } /** * Sets blog id. * * @since 3.0.0 * @access public * @param int $blog_id * @param int $site_id Optional. * @return string previous blog id */ function set_blog_id( $blog_id, $site_id = 0 ) { if ( ! empty( $site_id ) ) $this->siteid = $site_id; $old_blog_id = $this->blogid; $this->blogid = $blog_id; $this->prefix = $this->get_blog_prefix(); foreach ( $this->tables( 'blog' ) as $table => $prefixed_table ) $this->$table = $prefixed_table; foreach ( $this->tables( 'old' ) as $table => $prefixed_table ) $this->$table = $prefixed_table; return $old_blog_id; } /** * Gets blog prefix. * * @uses is_multisite() * @since 3.0.0 * @param int $blog_id Optional. * @return string Blog prefix. */ function get_blog_prefix( $blog_id = null ) { if ( is_multisite() ) { if ( null === $blog_id ) $blog_id = $this->blogid; $blog_id = (int) $blog_id; if ( defined( 'MULTISITE' ) && ( 0 == $blog_id || 1 == $blog_id ) ) return $this->base_prefix; else return $this->base_prefix . $blog_id . '_'; } else { return $this->base_prefix; } } /** * Returns an array of WordPress tables. * * Also allows for the CUSTOM_USER_TABLE and CUSTOM_USER_META_TABLE to * override the WordPress users and usersmeta tables that would otherwise * be determined by the prefix. * * The scope argument can take one of the following: * * 'all' - returns 'all' and 'global' tables. No old tables are returned. * 'blog' - returns the blog-level tables for the queried blog. * 'global' - returns the global tables for the installation, returning multisite tables only if running multisite. * 'ms_global' - returns the multisite global tables, regardless if current installation is multisite. * 'old' - returns tables which are deprecated. * * @since 3.0.0 * @uses wpdb::$tables * @uses wpdb::$old_tables * @uses wpdb::$global_tables * @uses wpdb::$ms_global_tables * @uses is_multisite() * * @param string $scope Optional. Can be all, global, ms_global, blog, or old tables. Defaults to all. * @param bool $prefix Optional. Whether to include table prefixes. Default true. If blog * prefix is requested, then the custom users and usermeta tables will be mapped. * @param int $blog_id Optional. The blog_id to prefix. Defaults to wpdb::$blogid. Used only when prefix is requested. * @return array Table names. When a prefix is requested, the key is the unprefixed table name. */ function tables( $scope = 'all', $prefix = true, $blog_id = 0 ) { switch ( $scope ) { case 'all' : $tables = array_merge( $this->global_tables, $this->tables ); if ( is_multisite() ) $tables = array_merge( $tables, $this->ms_global_tables ); break; case 'blog' : $tables = $this->tables; break; case 'global' : $tables = $this->global_tables; if ( is_multisite() ) $tables = array_merge( $tables, $this->ms_global_tables ); break; case 'ms_global' : $tables = $this->ms_global_tables; break; case 'old' : $tables = $this->old_tables; break; default : return array(); break; } if ( $prefix ) { if ( ! $blog_id ) $blog_id = $this->blogid; $blog_prefix = $this->get_blog_prefix( $blog_id ); $base_prefix = $this->base_prefix; $global_tables = array_merge( $this->global_tables, $this->ms_global_tables ); foreach ( $tables as $k => $table ) { if ( in_array( $table, $global_tables ) ) $tables[ $table ] = $base_prefix . $table; else $tables[ $table ] = $blog_prefix . $table; unset( $tables[ $k ] ); } if ( isset( $tables['users'] ) && defined( 'CUSTOM_USER_TABLE' ) ) $tables['users'] = CUSTOM_USER_TABLE; if ( isset( $tables['usermeta'] ) && defined( 'CUSTOM_USER_META_TABLE' ) ) $tables['usermeta'] = CUSTOM_USER_META_TABLE; } return $tables; } /** * Selects a database using the current database connection. * * The database name will be changed based on the current database * connection. On failure, the execution will bail and display an DB error. * * @since 0.71 * * @param string $db MySQL database name * @param resource $dbh Optional link identifier. * @return null Always null. */ function select( $db, $dbh = null) { if ( is_null($dbh) ) $dbh = $this->dbh; if ( !@mysql_select_db( $db, $dbh ) ) { $this->ready = false; $this->bail( sprintf( /*WP_I18N_DB_SELECT_DB*/'

データベースが選択できません

データベースサーバには接続できました (ユーザー名とパスワードは間違っていないようです) が、データベース %1$s を選択できませんでした。

もしデータベースの設置方法が分からない場合はホスティングサービスに連絡してください。それでもうまく行かなければ、WordPress サポートフォーラムでヘルプを得られるかもしれません。

'/*/WP_I18N_DB_SELECT_DB*/, $db, $this->dbuser ), 'db_select_fail' ); return; } } /** * Weak escape, using addslashes() * * @see addslashes() * @since 2.8.0 * @access private * * @param string $string * @return string */ function _weak_escape( $string ) { return addslashes( $string ); } /** * Real escape, using mysql_real_escape_string() or addslashes() * * @see mysql_real_escape_string() * @see addslashes() * @since 2.8.0 * @access private * * @param string $string to escape * @return string escaped */ function _real_escape( $string ) { if ( $this->dbh && $this->real_escape ) return mysql_real_escape_string( $string, $this->dbh ); else return addslashes( $string ); } /** * Escape data. Works on arrays. * * @uses wpdb::_escape() * @uses wpdb::_real_escape() * @since 2.8.0 * @access private * * @param string|array $data * @return string|array escaped */ function _escape( $data ) { if ( is_array( $data ) ) { foreach ( (array) $data as $k => $v ) { if ( is_array($v) ) $data[$k] = $this->_escape( $v ); else $data[$k] = $this->_real_escape( $v ); } } else { $data = $this->_real_escape( $data ); } return $data; } /** * Escapes content for insertion into the database using addslashes(), for security. * * Works on arrays. * * @since 0.71 * @param string|array $data to escape * @return string|array escaped as query safe string */ function escape( $data ) { if ( is_array( $data ) ) { foreach ( (array) $data as $k => $v ) { if ( is_array( $v ) ) $data[$k] = $this->escape( $v ); else $data[$k] = $this->_weak_escape( $v ); } } else { $data = $this->_weak_escape( $data ); } return $data; } /** * Escapes content by reference for insertion into the database, for security * * @uses wpdb::_real_escape() * @since 2.3.0 * @param string $string to escape * @return void */ function escape_by_ref( &$string ) { $string = $this->_real_escape( $string ); } /** * Prepares a SQL query for safe execution. Uses sprintf()-like syntax. * * The following directives can be used in the query format string: * %d (decimal number) * %s (string) * %% (literal percentage sign - no argument needed) * * Both %d and %s are to be left unquoted in the query string and they need an argument passed for them. * Literals (%) as parts of the query must be properly written as %%. * * This function only supports a small subset of the sprintf syntax; it only supports %d (decimal number), %s (string). * Does not support sign, padding, alignment, width or precision specifiers. * Does not support argument numbering/swapping. * * May be called like {@link http://php.net/sprintf sprintf()} or like {@link http://php.net/vsprintf vsprintf()}. * * Both %d and %s should be left unquoted in the query string. * * * wpdb::prepare( "SELECT * FROM `table` WHERE `column` = %s AND `field` = %d", 'foo', 1337 ) * wpdb::prepare( "SELECT DATE_FORMAT(`field`, '%%c') FROM `table` WHERE `column` = %s", 'foo' ); * * * @link http://php.net/sprintf Description of syntax. * @since 2.3.0 * * @param string $query Query statement with sprintf()-like placeholders * @param array|mixed $args The array of variables to substitute into the query's placeholders if being called like * {@link http://php.net/vsprintf vsprintf()}, or the first variable to substitute into the query's placeholders if * being called like {@link http://php.net/sprintf sprintf()}. * @param mixed $args,... further variables to substitute into the query's placeholders if being called like * {@link http://php.net/sprintf sprintf()}. * @return null|false|string Sanitized query string, null if there is no query, false if there is an error and string * if there was something to prepare */ function prepare( $query = null ) { // ( $query, *$args ) if ( is_null( $query ) ) return; $args = func_get_args(); array_shift( $args ); // If args were passed as an array (as in vsprintf), move them up if ( isset( $args[0] ) && is_array($args[0]) ) $args = $args[0]; $query = str_replace( "'%s'", '%s', $query ); // in case someone mistakenly already singlequoted it $query = str_replace( '"%s"', '%s', $query ); // doublequote unquoting $query = preg_replace( '|(?dbh ); $EZSQL_ERROR[] = array( 'query' => $this->last_query, 'error_str' => $str ); if ( $this->suppress_errors ) return false; if ( $caller = $this->get_caller() ) $error_str = sprintf( /*WP_I18N_DB_QUERY_ERROR_FULL*/'WordPress データベースエラー: %1$s for query %2$s made by %3$s'/*/WP_I18N_DB_QUERY_ERROR_FULL*/, $str, $this->last_query, $caller ); else $error_str = sprintf( /*WP_I18N_DB_QUERY_ERROR*/'WordPress データベースエラー: %1$s for query %2$s'/*/WP_I18N_DB_QUERY_ERROR*/, $str, $this->last_query ); if ( function_exists( 'error_log' ) && ( $log_file = @ini_get( 'error_log' ) ) && ( 'syslog' == $log_file || @is_writable( $log_file ) ) ) @error_log( $error_str ); // Are we showing errors? if ( ! $this->show_errors ) return false; // If there is an error then take note of it if ( is_multisite() ) { $msg = "WordPress database error: [$str]\n{$this->last_query}\n"; if ( defined( 'ERRORLOGFILE' ) ) error_log( $msg, 3, ERRORLOGFILE ); if ( defined( 'DIEONDBERROR' ) ) wp_die( $msg ); } else { $str = htmlspecialchars( $str, ENT_QUOTES ); $query = htmlspecialchars( $this->last_query, ENT_QUOTES ); print "

WordPress database error: [$str]
$query

"; } } /** * Enables showing of database errors. * * This function should be used only to enable showing of errors. * wpdb::hide_errors() should be used instead for hiding of errors. However, * this function can be used to enable and disable showing of database * errors. * * @since 0.71 * @see wpdb::hide_errors() * * @param bool $show Whether to show or hide errors * @return bool Old value for showing errors. */ function show_errors( $show = true ) { $errors = $this->show_errors; $this->show_errors = $show; return $errors; } /** * Disables showing of database errors. * * By default database errors are not shown. * * @since 0.71 * @see wpdb::show_errors() * * @return bool Whether showing of errors was active */ function hide_errors() { $show = $this->show_errors; $this->show_errors = false; return $show; } /** * Whether to suppress database errors. * * By default database errors are suppressed, with a simple * call to this function they can be enabled. * * @since 2.5.0 * @see wpdb::hide_errors() * @param bool $suppress Optional. New value. Defaults to true. * @return bool Old value */ function suppress_errors( $suppress = true ) { $errors = $this->suppress_errors; $this->suppress_errors = (bool) $suppress; return $errors; } /** * Kill cached query results. * * @since 0.71 * @return void */ function flush() { $this->last_result = array(); $this->col_info = null; $this->last_query = null; } /** * Connect to and select database * * @since 3.0.0 */ function db_connect() { if ( WP_DEBUG ) { $this->dbh = mysql_connect( $this->dbhost, $this->dbuser, $this->dbpassword, true ); } else { $this->dbh = @mysql_connect( $this->dbhost, $this->dbuser, $this->dbpassword, true ); } if ( !$this->dbh ) { $this->bail( sprintf( /*WP_I18N_DB_CONN_ERROR*/'

データベース接続確立のエラー

これは wp-config.php ファイルのユーザー名とパスワードが間違っているか、%s のデータベースサーバーに接続できないかのどちらかを意味します。ホストのデータベースサーバーがダウンしているのかもしれません。

上記の用語の意味が分からない場合は、サーバーの管理者にお問い合わせください。ヘルプが必要であれば WordPress 日本語フォーラム または WordPress サポートフォーラム (英語) へどうぞ。

'/*/WP_I18N_DB_CONN_ERROR*/, $this->dbhost ), 'db_connect_fail' ); return; } $this->set_charset( $this->dbh ); $this->ready = true; $this->select( $this->dbname, $this->dbh ); } /** * Perform a MySQL database query, using current database connection. * * More information can be found on the codex page. * * @since 0.71 * * @param string $query Database query * @return int|false Number of rows affected/selected or false on error */ function query( $query ) { if ( ! $this->ready ) return false; // some queries are made before the plugins have been loaded, and thus cannot be filtered with this method if ( function_exists( 'apply_filters' ) ) $query = apply_filters( 'query', $query ); $return_val = 0; $this->flush(); // Log how the function was called $this->func_call = "\$db->query(\"$query\")"; // Keep track of the last query for debug.. $this->last_query = $query; if ( defined( 'SAVEQUERIES' ) && SAVEQUERIES ) $this->timer_start(); $this->result = @mysql_query( $query, $this->dbh ); $this->num_queries++; if ( defined( 'SAVEQUERIES' ) && SAVEQUERIES ) $this->queries[] = array( $query, $this->timer_stop(), $this->get_caller() ); // If there is an error then take note of it.. if ( $this->last_error = mysql_error( $this->dbh ) ) { $this->print_error(); return false; } if ( preg_match( '/^\s*(create|alter|truncate|drop) /i', $query ) ) { $return_val = $this->result; } elseif ( preg_match( '/^\s*(insert|delete|update|replace) /i', $query ) ) { $this->rows_affected = mysql_affected_rows( $this->dbh ); // Take note of the insert_id if ( preg_match( '/^\s*(insert|replace) /i', $query ) ) { $this->insert_id = mysql_insert_id($this->dbh); } // Return number of rows affected $return_val = $this->rows_affected; } else { $i = 0; while ( $i < @mysql_num_fields( $this->result ) ) { $this->col_info[$i] = @mysql_fetch_field( $this->result ); $i++; } $num_rows = 0; while ( $row = @mysql_fetch_object( $this->result ) ) { $this->last_result[$num_rows] = $row; $num_rows++; } @mysql_free_result( $this->result ); // Log number of rows the query returned // and return number of rows selected $this->num_rows = $num_rows; $return_val = $num_rows; } return $return_val; } /** * Insert a row into a table. * * * wpdb::insert( 'table', array( 'column' => 'foo', 'field' => 'bar' ) ) * wpdb::insert( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( '%s', '%d' ) ) * * * @since 2.5.0 * @see wpdb::prepare() * @see wpdb::$field_types * @see wp_set_wpdb_vars() * * @param string $table table name * @param array $data Data to insert (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped). * @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data. * A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types. * @return int|false The number of rows inserted, or false on error. */ function insert( $table, $data, $format = null ) { return $this->_insert_replace_helper( $table, $data, $format, 'INSERT' ); } /** * Replace a row into a table. * * * wpdb::replace( 'table', array( 'column' => 'foo', 'field' => 'bar' ) ) * wpdb::replace( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( '%s', '%d' ) ) * * * @since 3.0.0 * @see wpdb::prepare() * @see wpdb::$field_types * @see wp_set_wpdb_vars() * * @param string $table table name * @param array $data Data to insert (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped). * @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data. * A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types. * @return int|false The number of rows affected, or false on error. */ function replace( $table, $data, $format = null ) { return $this->_insert_replace_helper( $table, $data, $format, 'REPLACE' ); } /** * Helper function for insert and replace. * * Runs an insert or replace query based on $type argument. * * @access private * @since 3.0.0 * @see wpdb::prepare() * @see wpdb::$field_types * @see wp_set_wpdb_vars() * * @param string $table table name * @param array $data Data to insert (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped). * @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data. * A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types. * @return int|false The number of rows affected, or false on error. */ function _insert_replace_helper( $table, $data, $format = null, $type = 'INSERT' ) { if ( ! in_array( strtoupper( $type ), array( 'REPLACE', 'INSERT' ) ) ) return false; $formats = $format = (array) $format; $fields = array_keys( $data ); $formatted_fields = array(); foreach ( $fields as $field ) { if ( !empty( $format ) ) $form = ( $form = array_shift( $formats ) ) ? $form : $format[0]; elseif ( isset( $this->field_types[$field] ) ) $form = $this->field_types[$field]; else $form = '%s'; $formatted_fields[] = $form; } $sql = "{$type} INTO `$table` (`" . implode( '`,`', $fields ) . "`) VALUES ('" . implode( "','", $formatted_fields ) . "')"; return $this->query( $this->prepare( $sql, $data ) ); } /** * Update a row in the table * * * wpdb::update( 'table', array( 'column' => 'foo', 'field' => 'bar' ), array( 'ID' => 1 ) ) * wpdb::update( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( 'ID' => 1 ), array( '%s', '%d' ), array( '%d' ) ) * * * @since 2.5.0 * @see wpdb::prepare() * @see wpdb::$field_types * @see wp_set_wpdb_vars() * * @param string $table table name * @param array $data Data to update (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped). * @param array $where A named array of WHERE clauses (in column => value pairs). Multiple clauses will be joined with ANDs. Both $where columns and $where values should be "raw". * @param array|string $format Optional. An array of formats to be mapped to each of the values in $data. If string, that format will be used for all of the values in $data. * A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types. * @param array|string $format_where Optional. An array of formats to be mapped to each of the values in $where. If string, that format will be used for all of the items in $where. A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $where will be treated as strings. * @return int|false The number of rows updated, or false on error. */ function update( $table, $data, $where, $format = null, $where_format = null ) { if ( ! is_array( $data ) || ! is_array( $where ) ) return false; $formats = $format = (array) $format; $bits = $wheres = array(); foreach ( (array) array_keys( $data ) as $field ) { if ( !empty( $format ) ) $form = ( $form = array_shift( $formats ) ) ? $form : $format[0]; elseif ( isset($this->field_types[$field]) ) $form = $this->field_types[$field]; else $form = '%s'; $bits[] = "`$field` = {$form}"; } $where_formats = $where_format = (array) $where_format; foreach ( (array) array_keys( $where ) as $field ) { if ( !empty( $where_format ) ) $form = ( $form = array_shift( $where_formats ) ) ? $form : $where_format[0]; elseif ( isset( $this->field_types[$field] ) ) $form = $this->field_types[$field]; else $form = '%s'; $wheres[] = "`$field` = {$form}"; } $sql = "UPDATE `$table` SET " . implode( ', ', $bits ) . ' WHERE ' . implode( ' AND ', $wheres ); return $this->query( $this->prepare( $sql, array_merge( array_values( $data ), array_values( $where ) ) ) ); } /** * Retrieve one variable from the database. * * Executes a SQL query and returns the value from the SQL result. * If the SQL result contains more than one column and/or more than one row, this function returns the value in the column and row specified. * If $query is null, this function returns the value in the specified column and row from the previous SQL result. * * @since 0.71 * * @param string|null $query Optional. SQL query. Defaults to null, use the result from the previous query. * @param int $x Optional. Column of value to return. Indexed from 0. * @param int $y Optional. Row of value to return. Indexed from 0. * @return string|null Database query result (as string), or null on failure */ function get_var( $query = null, $x = 0, $y = 0 ) { $this->func_call = "\$db->get_var(\"$query\", $x, $y)"; if ( $query ) $this->query( $query ); // Extract var out of cached results based x,y vals if ( !empty( $this->last_result[$y] ) ) { $values = array_values( get_object_vars( $this->last_result[$y] ) ); } // If there is a value return it else return null return ( isset( $values[$x] ) && $values[$x] !== '' ) ? $values[$x] : null; } /** * Retrieve one row from the database. * * Executes a SQL query and returns the row from the SQL result. * * @since 0.71 * * @param string|null $query SQL query. * @param string $output Optional. one of ARRAY_A | ARRAY_N | OBJECT constants. Return an associative array (column => value, ...), * a numerically indexed array (0 => value, ...) or an object ( ->column = value ), respectively. * @param int $y Optional. Row to return. Indexed from 0. * @return mixed Database query result in format specifed by $output or null on failure */ function get_row( $query = null, $output = OBJECT, $y = 0 ) { $this->func_call = "\$db->get_row(\"$query\",$output,$y)"; if ( $query ) $this->query( $query ); else return null; if ( !isset( $this->last_result[$y] ) ) return null; if ( $output == OBJECT ) { return $this->last_result[$y] ? $this->last_result[$y] : null; } elseif ( $output == ARRAY_A ) { return $this->last_result[$y] ? get_object_vars( $this->last_result[$y] ) : null; } elseif ( $output == ARRAY_N ) { return $this->last_result[$y] ? array_values( get_object_vars( $this->last_result[$y] ) ) : null; } else { $this->print_error(/*WP_I18N_DB_GETROW_ERROR*/' $db->get_row(string query, output type, int offset) -- 出力の型は次のいずれかでなければなりません: OBJECT, ARRAY_A, ARRAY_N'/*/WP_I18N_DB_GETROW_ERROR*/); } } /** * Retrieve one column from the database. * * Executes a SQL query and returns the column from the SQL result. * If the SQL result contains more than one column, this function returns the column specified. * If $query is null, this function returns the specified column from the previous SQL result. * * @since 0.71 * * @param string|null $query Optional. SQL query. Defaults to previous query. * @param int $x Optional. Column to return. Indexed from 0. * @return array Database query result. Array indexed from 0 by SQL result row number. */ function get_col( $query = null , $x = 0 ) { if ( $query ) $this->query( $query ); $new_array = array(); // Extract the column values for ( $i = 0, $j = count( $this->last_result ); $i < $j; $i++ ) { $new_array[$i] = $this->get_var( null, $x, $i ); } return $new_array; } /** * Retrieve an entire SQL result set from the database (i.e., many rows) * * Executes a SQL query and returns the entire SQL result. * * @since 0.71 * * @param string $query SQL query. * @param string $output Optional. Any of ARRAY_A | ARRAY_N | OBJECT | OBJECT_K constants. With one of the first three, return an array of rows indexed from 0 by SQL result row number. * Each row is an associative array (column => value, ...), a numerically indexed array (0 => value, ...), or an object. ( ->column = value ), respectively. * With OBJECT_K, return an associative array of row objects keyed by the value of each row's first column's value. Duplicate keys are discarded. * @return mixed Database query results */ function get_results( $query = null, $output = OBJECT ) { $this->func_call = "\$db->get_results(\"$query\", $output)"; if ( $query ) $this->query( $query ); else return null; $new_array = array(); if ( $output == OBJECT ) { // Return an integer-keyed array of row objects return $this->last_result; } elseif ( $output == OBJECT_K ) { // Return an array of row objects with keys from column 1 // (Duplicates are discarded) foreach ( $this->last_result as $row ) { $key = array_shift( get_object_vars( $row ) ); if ( ! isset( $new_array[ $key ] ) ) $new_array[ $key ] = $row; } return $new_array; } elseif ( $output == ARRAY_A || $output == ARRAY_N ) { // Return an integer-keyed array of... if ( $this->last_result ) { foreach( (array) $this->last_result as $row ) { if ( $output == ARRAY_N ) { // ...integer-keyed row arrays $new_array[] = array_values( get_object_vars( $row ) ); } else { // ...column name-keyed row arrays $new_array[] = get_object_vars( $row ); } } } return $new_array; } return null; } /** * Retrieve column metadata from the last query. * * @since 0.71 * * @param string $info_type Optional. Type one of name, table, def, max_length, not_null, primary_key, multiple_key, unique_key, numeric, blob, type, unsigned, zerofill * @param int $col_offset Optional. 0: col name. 1: which table the col's in. 2: col's max length. 3: if the col is numeric. 4: col's type * @return mixed Column Results */ function get_col_info( $info_type = 'name', $col_offset = -1 ) { if ( $this->col_info ) { if ( $col_offset == -1 ) { $i = 0; $new_array = array(); foreach( (array) $this->col_info as $col ) { $new_array[$i] = $col->{$info_type}; $i++; } return $new_array; } else { return $this->col_info[$col_offset]->{$info_type}; } } } /** * Starts the timer, for debugging purposes. * * @since 1.5.0 * * @return true */ function timer_start() { $mtime = explode( ' ', microtime() ); $this->time_start = $mtime[1] + $mtime[0]; return true; } /** * Stops the debugging timer. * * @since 1.5.0 * * @return int Total time spent on the query, in milliseconds */ function timer_stop() { $mtime = explode( ' ', microtime() ); $time_end = $mtime[1] + $mtime[0]; $time_total = $time_end - $this->time_start; return $time_total; } /** * Wraps errors in a nice header and footer and dies. * * Will not die if wpdb::$show_errors is true * * @since 1.5.0 * * @param string $message The Error message * @param string $error_code Optional. A Computer readable string to identify the error. * @return false|void */ function bail( $message, $error_code = '500' ) { if ( !$this->show_errors ) { if ( class_exists( 'WP_Error' ) ) $this->error = new WP_Error($error_code, $message); else $this->error = $message; return false; } wp_die($message); } /** * Whether MySQL database is at least the required minimum version. * * @since 2.5.0 * @uses $wp_version * @uses $required_mysql_version * * @return WP_Error */ function check_database_version() { global $wp_version, $required_mysql_version; // Make sure the server has the required MySQL version if ( version_compare($this->db_version(), $required_mysql_version, '<') ) return new WP_Error('database_version', sprintf( __( 'ERROR: WordPress %1$s requires MySQL %2$s or higher' ), $wp_version, $required_mysql_version )); } /** * Whether the database supports collation. * * Called when WordPress is generating the table scheme. * * @since 2.5.0 * * @return bool True if collation is supported, false if version does not */ function supports_collation() { return $this->has_cap( 'collation' ); } /** * Determine if a database supports a particular feature * * @since 2.7.0 * @see wpdb::db_version() * * @param string $db_cap the feature * @return bool */ function has_cap( $db_cap ) { $version = $this->db_version(); switch ( strtolower( $db_cap ) ) { case 'collation' : // @since 2.5.0 case 'group_concat' : // @since 2.7 case 'subqueries' : // @since 2.7 return version_compare( $version, '4.1', '>=' ); case 'set_charset' : return version_compare($version, '5.0.7', '>='); }; return false; } /** * Retrieve the name of the function that called wpdb. * * Searches up the list of functions until it reaches * the one that would most logically had called this method. * * @since 2.5.0 * * @return string The name of the calling function */ function get_caller() { $trace = array_reverse( debug_backtrace() ); $caller = array(); foreach ( $trace as $call ) { if ( isset( $call['class'] ) && __CLASS__ == $call['class'] ) continue; // Filter out wpdb calls. $caller[] = isset( $call['class'] ) ? "{$call['class']}->{$call['function']}" : $call['function']; } return join( ', ', $caller ); } /** * The database version number. * * @since 2.7.0 * * @return false|string false on failure, version number on success */ function db_version() { return preg_replace( '/[^0-9.].*/', '', mysql_get_server_info( $this->dbh ) ); } } ?>