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<?php
/**
* WPSEO plugin file.
*
* @package WPSEO\Admin
*/
/**
* Represents the proxy for communicating with the database.
*/
class WPSEO_Database_Proxy {
/**
* Holds the table name.
*
* @var string
*/
protected $table_name;
/**
* Determines whether to suppress errors or not.
*
* @var bool
*/
protected $suppress_errors = true;
/**
* Determines if this table is multisite.
*
* @var bool
*/
protected $is_multisite_table = false;
/**
* Holds the last suppressed state.
*
* @var bool
*/
protected $last_suppressed_state;
/**
* Holds the WordPress database object.
*
* @var wpdb
*/
protected $database;
/**
* Holds the table prefix.
*
* @var string
*/
protected $table_prefix;
/**
* Sets the class attributes and registers the table.
*
* @param wpdb $database The database object.
* @param string $table_name The table name that is represented.
* @param bool $suppress_errors Should the errors be suppressed.
* @param bool $is_multisite_table Should the table be global in multisite.
*/
public function __construct( $database, $table_name, $suppress_errors = true, $is_multisite_table = false ) {
$this->table_name = $table_name;
$this->suppress_errors = (bool) $suppress_errors;
$this->is_multisite_table = (bool) $is_multisite_table;
$this->database = $database;
// If the table prefix was provided, strip it as it's handled automatically.
$table_prefix = $this->get_table_prefix();
if ( ! empty( $table_prefix ) && strpos( $this->table_name, $table_prefix ) === 0 ) {
$this->table_prefix = substr( $this->table_name, strlen( $table_prefix ) );
}
if ( ! $this->is_table_registered() ) {
$this->register_table();
}
}
/**
* Inserts data into the database.
*
* @param array $data Data to insert.
* @param array|string|null $format Formats for the data.
*
* @return int|false Total amount of inserted rows or false on error.
*/
public function insert( array $data, $format = null ) {
$this->pre_execution();
$result = $this->database->insert( $this->get_table_name(), $data, $format );
$this->post_execution();
return $result;
}
/**
* Updates data in the database.
*
* @param array $data Data to update on the table.
* @param array $where Where condition as key => value array.
* @param array|string|null $format Optional. Data prepare format.
* @param array|string|null $where_format Optional. Where prepare format.
*
* @return int|false False when the update request is invalid, int on number of rows changed.
*/
public function update( array $data, array $where, $format = null, $where_format = null ) {
$this->pre_execution();
$result = $this->database->update( $this->get_table_name(), $data, $where, $format, $where_format );
$this->post_execution();
return $result;
}
/**
* Upserts data in the database.
*
* Performs an insert into and if key is duplicate it will update the existing record.
*
* @param array $data Data to update on the table.
* @param array|null $where Unused. Where condition as key => value array.
* @param array|string|null $format Optional. Data prepare format.
* @param array|string|null $where_format Optional. Where prepare format.
*
* @return int|false False when the upsert request is invalid, int on number of rows changed.
*/
public function upsert( array $data, ?array $where = null, $format = null, $where_format = null ) {
if ( $where_format !== null ) {
_deprecated_argument( __METHOD__, '7.7.0', 'The where_format argument is deprecated' );
}
$this->pre_execution();
$update = [];
$keys = [];
$columns = array_keys( $data );
foreach ( $columns as $column ) {
$keys[] = '`' . $column . '`';
$update[] = sprintf( '`%1$s` = VALUES(`%1$s`)', $column );
}
$query = sprintf(
'INSERT INTO `%1$s` (%2$s) VALUES ( %3$s ) ON DUPLICATE KEY UPDATE %4$s',
$this->get_table_name(),
implode( ', ', $keys ),
implode( ', ', array_fill( 0, count( $data ), '%s' ) ),
implode( ', ', $update )
);
$result = $this->database->query(
$this->database->prepare(
$query,
array_values( $data )
)
);
$this->post_execution();
return $result;
}
/**
* Deletes a record from the database.
*
* @param array $where Where clauses for the query.
* @param array|string|null $format Formats for the data.
*
* @return int|false
*/
public function delete( array $where, $format = null ) {
$this->pre_execution();
$result = $this->database->delete( $this->get_table_name(), $where, $format );
$this->post_execution();
return $result;
}
/**
* Executes the given query and returns the results.
*
* @param string $query The query to execute.
*
* @return array|object|null The resultset
*/
public function get_results( $query ) {
$this->pre_execution();
$results = $this->database->get_results( $query );
$this->post_execution();
return $results;
}
/**
* Creates a table to the database.
*
* @param array $columns The columns to create.
* @param array $indexes The indexes to use.
*
* @return bool True when creation is successful.
*/
public function create_table( array $columns, array $indexes = [] ) {
$create_table = sprintf(
'CREATE TABLE IF NOT EXISTS %1$s ( %2$s ) %3$s',
$this->get_table_name(),
implode( ',', array_merge( $columns, $indexes ) ),
$this->database->get_charset_collate()
);
$this->pre_execution();
$is_created = (bool) $this->database->query( $create_table );
$this->post_execution();
return $is_created;
}
/**
* Checks if there is an error.
*
* @return bool Returns true when there is an error.
*/
public function has_error() {
return ( $this->database->last_error !== '' );
}
/**
* Executed before a query will be ran.
*
* @return void
*/
protected function pre_execution() {
if ( $this->suppress_errors ) {
$this->last_suppressed_state = $this->database->suppress_errors();
}
}
/**
* Executed after a query has been ran.
*
* @return void
*/
protected function post_execution() {
if ( $this->suppress_errors ) {
$this->database->suppress_errors( $this->last_suppressed_state );
}
}
/**
* Returns the full table name.
*
* @return string Full table name including prefix.
*/
public function get_table_name() {
return $this->get_table_prefix() . $this->table_name;
}
/**
* Returns the prefix to use for the table.
*
* @return string The table prefix depending on the database context.
*/
protected function get_table_prefix() {
if ( $this->is_multisite_table ) {
return $this->database->base_prefix;
}
return $this->database->get_blog_prefix();
}
/**
* Registers the table with WordPress.
*
* @return void
*/
protected function register_table() {
$table_name = $this->table_name;
$full_table_name = $this->get_table_name();
$this->database->$table_name = $full_table_name;
if ( $this->is_multisite_table ) {
$this->database->ms_global_tables[] = $table_name;
return;
}
$this->database->tables[] = $table_name;
}
/**
* Checks if the table has been registered with WordPress.
*
* @return bool True if the table is registered, false otherwise.
*/
protected function is_table_registered() {
if ( $this->is_multisite_table ) {
return in_array( $this->table_name, $this->database->ms_global_tables, true );
}
return in_array( $this->table_name, $this->database->tables, true );
}
}