È stato possibile connettersi al server del database (il che significa che il nome utente e la password sono ok) ma non è stato possibile selezionare il database %1$s.
%2$s ha i permessi di usare il database %1$s?Se non si sa come impostare un database sarebbe opportuno contattare il proprio fornitore di hosting. Se tutto questo fallisce è possibile trovare aiuto sul Forum di supporto italiano su WordPress.
'/*/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 (integer) * %f (float) * %s (string) * %% (literal percentage sign - no argument needed) * * All of %d, %f, 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 (integer), %f (float), and %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() )
$error_str = sprintf( /*WP_I18N_DB_QUERY_ERROR_FULL*/'WordPress errore sul database %1$s per la query %2$s fatta da %3$s'/*/WP_I18N_DB_QUERY_ERROR_FULL*/, $str, $this->last_query, $caller );
else
$error_str = sprintf( /*WP_I18N_DB_QUERY_ERROR*/'WordPress errore database %1$s per la 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
Ciò significa che le informazioni sul nome utente o sulla password presenti nel file wp-config.php non sono corrette o che non è possibile contattare il server del database a %s. Il che potrebbe voler dire che il database server del fornitore di hosting non è attivo.
Nel caso non si abbia certezza sul significato di questi termini è opportuno contattare il proprio host. Se si ha bisogno di ulteriore aiuto è sempre possibile visitare il Forum di supporto italiano su WordPress.
'/*/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', '%f', '%s' (integer, float, 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', '%f', '%s' (integer, float, 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', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
* @param string $type Optional. What type of operation is this? INSERT or REPLACE. Defaults to INSERT.
* @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', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types.
* @param array|string $where_format 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', '%f', '%s' (integer, float, 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 specified 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) -- Il risultato deve essere uno fra questi: 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 ) {
$var_by_ref = get_object_vars( $row );
$key = array_shift( $var_by_ref );
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 ) );
}
}
?>