wpdb

Connects to the database server and selects a database.

Makes private properties readable for backward compatibility.

Makes private properties settable for backward compatibility.

Makes private properties check-able for backward compatibility.

Makes private properties un-settable for backward compatibility.

Sets $this->charset and $this->collate.

Determines the best charset and collation to use given a charset and collation.

Sets the connection's character set.

Changes the current SQL mode, and ensures its WordPress compatibility.

Sets the table prefix for the WordPress tables.

Sets blog ID.

Gets blog prefix.

Returns an array of WordPress tables.

Selects a database using the current or provided database connection.

Do not use, deprecated.

Real escape using mysqli_real_escape_string().

Escapes data. Works on arrays.

Do not use, deprecated.

Escapes content by reference for insertion into the database, for security.

Quotes an identifier for a MySQL database, e.g. table/field names.

Escapes an identifier value without adding the surrounding quotes.

Prepares a SQL query for safe execution.

First half of escaping for `LIKE` special characters `%` and `_` before preparing for SQL.

Prints SQL/DB error.

Enables showing of database errors.

Disables showing of database errors.

Enables or disables suppressing of database errors.

Kills cached query results.

Connects to and selects database.

Parses the DB_HOST setting to interpret it for mysqli_real_connect().

Checks that the connection to the database is still up. If not, try to reconnect.

Performs a database query, using current database connection.

Internal function to perform the mysqli_query() call.

Logs query data.

Generates and returns a placeholder escape string for use in queries returned by ::prepare().

Adds a placeholder escape string, to escape anything that resembles a printf() placeholder.

Removes the placeholder escape strings from a query.

Inserts a row into the table.

Replaces a row in the table or inserts it if it does not exist, based on a PRIMARY KEY or a UNIQUE index.

Helper function for insert and replace.

Updates a row in the table.

Deletes a row in the table.

Processes arrays of field/value pairs and field formats.

Prepares arrays of value/format pairs as passed to wpdb CRUD methods.

Adds field charsets to field/value/format arrays generated by wpdb::process_field_formats().

For string fields, records the maximum string length that field can safely save.

Retrieves one value from the database.

Retrieves one row from the database.

Retrieves one column from the database.

Retrieves an entire SQL result set from the database (i.e., many rows).

Retrieves the character set for the given table.

Retrieves the character set for the given column.

Retrieves the maximum string length allowed in a given column.

Checks if a string is ASCII.

Checks if the query is accessing a collation considered safe on the current version of MySQL.

Strips any invalid characters based on value/charset pairs.

Strips any invalid characters from the query.

Strips any invalid characters from the string for a given table and column.

Finds the first table name referenced in a query.

Loads the column metadata from the last query.

Retrieves column metadata from the last query.

Starts the timer, for debugging purposes.

Stops the debugging timer.

Wraps errors in a nice header and footer and dies.

Closes the current database connection.

Determines whether MySQL database is at least the required minimum version.

Determines whether the database supports collation.

Retrieves the database character collate.

Determines whether the database or WPDB supports a particular feature.

Retrieves a comma-separated list of the names of the functions that called wpdb.

Retrieves the database server version.

Returns the version of the MySQL server.