Wordpress Database Query

Worldpress database query

You can reference WordPress database tables in the class wpdb. Parler_à_la_base_de_line : Class wpdb Class. As an example, to choose some information from a user-defined spreadsheet named "mytable", you can do the following. Rarely, if you need to join another database, you will need to instance your own instance of the classes vpdb with your own database join information. If you have a complex configuration with many database systems, you should use Hyperband instead.

In order to avoid SQL injectations, you must escapene any non-trusted SQL query data that you include in the SQL query. get_var will return a unique database tag. Although only one of the variables is passed back, the whole query results are buffered for later use.

If you set this to zero, the specified variables are returned from the results of the preceding query stored in the cache. Use $meta_key ='miles'; " ", ) ); choose option "Total miles ist {$allmiles}"; To get a whole line from a query, use function:: use get_row.

Using this command, you can either retrieve the line as an entity, an associated matrix, or a numeric matrix. When more than one line is retrieved from the query, only the specified line is retrieved by the command, but all lines are buffered for later use.

OBEJECT - the results are displayed as anobjects. ORRAY_A - Results are displayed as an associated arrays. ORRAY_N - Results are displayed as a numeric indicated arrays. | row_offset | Page (integer) The required line (0 is the first). This is the $mylink object's property. The $mylink object's property is the name of the SQL query results item (in this example, all rows from the $wpdb->links worksheet, but you can also search for certain rows only).

left_id; // print "10" $mylink = $wpdb->get_row( "SELECT * FROM $wpdb->links WHERE link_id = 10", ARRAY_A); would lead to an associated array: elcho $mylink['link_id']]; // print "10" $mylink = $wpdb->get_row( "SELECT * FROM $wpdb->links WHERE link_id = 10", ARRAY_N); would lead to a numeric indicated array: elcho $mylink[1]; // print "10" If there is no data set with ID 10 in the link list, zero is return.

Output a one-dimensional arrays. When more than one of the columns is retrieved by the query, only the specified one is retrieved by the command, but the whole output is buffered for later use.

If you set this to zero, the specified columns are returned from the results of the preceding query stored in the cache.

Use the get_col format of the class vpdb to get an overview of all postal IDocs that match the specified parameters and are ordered in the right order. Then, a we use a fork construction to pass through this cluster of mail URLs and display the header of each one.

Displays the whole query results as an arrow. Every item of this arrays equals one line of the query results and can be, like get-row, an item, an associative arrays or a numerated one. An empty line is returned if no suitable lines are found or if there is a database failure.

OBJECT specifies that the resulting numeric index is an arrays of line items.

The OBJECT_K results are displayed as an associated line object arrays using the value of the first table as the key (duplicates are discarded). ORRAY_A - Results are displayed as a numeric indicated cluster of associated clusters using columns as keys. ORRAY_N - Results are displayed as a numeric indicated matrix of numeric indicated matrixes.

Number of results for a'SELECT' query is saved in $wpdb->num_rows.

is used for all value in $data. When this option is omitted, all value in $data are handled as character chains unless otherwise specified in wpdb::$field_types.

Once the ID created for the AUTO_INCREMENT field has been added, it can be accessed: If the line could not be pasted, this will return true. Otherwise it will return the number of affected lines (which will always be 1). Hint: The value share of the columns=>value pair of the dataparameter must be skalar.

When passing an arrays (or objects) as an insertion value, create a caution similar to "mysql_real_escape_string() expecting parameters to be 1 character chain, arrays specified in the line 880 of the directory "/var/wwww/html/wp-includes/wp-db.php". Add two colums to a line, where the first value is a character chain and the second is a number:'table','column1' =>'value1', ),'%s','%d'); Substitute a line in a spreadsheet if it does already existed, or add a new line to a spreadsheet if the line has not yet existed. spreadsheet (string) The name of the spreadsheet in which the information is to be substituted. Information Information (array) Information to be substituted (in colum => value pairs).

is used for all value in $data. When this option is omitted, all value in $data are handled as character chains unless otherwise specified in wpdb::$field_types.

When the length of a stringer in the $data Array argument is longer than the length specified in the MySql database tables, the insertion fails, this returns true, but $wpdb->last_error is not put on a declarative value. Make sure the information you want to add fits into the database - don't expect MySql to cut the information.

The ID created for the AUTO_INCREMENT field can be used after the replacement: On the other hand, this feature will return a number indicating the number of affected lines. An individual line may substitute more than one old line if the spreadsheet contains more than one distinct index and the new line duplicates value for different old lines in different distinct indices.

If a line could not be substituted and a new line could not be added, this feature will return the false value.

Delivers the number of affected lines if success. x The name of the current database to be updated. xata x (array) Current database to be updated (in col. => value pairs). As well as $data colums as $data value should be "raw" (also SQL escaped).

That means that if you are using GET or POST information, you may need to use stripslashes() to prevent backslashes from getting into the database. $where rows as well as $where value should be both " raw ". form (array|string) (optional) An arrangement of forms to be applied to each of the value in $data.

is used for all elements in $where. Potential form values: %s as character chain; %d as whole number and %f as floating.

If you omit this specification, all $where value are handled as character chains. Refresh a line where the ID is 1, the value in the first col is a character chain, and the value in the second col is a number:'table', ), array('ID' => 1 ), ), ), ), ); Attention: %d cannot handle decimal places - if you are not using integers, use String/%s.

and can be used to remove lines from a spreadsheet. Its use is very similar to updating and pasting. Return ed the number of lines refreshed, or wrong on failure. Use the format where: $wpdb->delete( 'table', array( 'ID' => 1 ) ) ); // Use the format where. See the other get_results, get_var, get_row, or get_col above for more fundamental query information, such as choosing information from a spreadsheet. Query (string) The SQL query you want to run.

Displays an integral value specifying the number of lines affected/selected for SELECT, INSERT, DELETE, UPDATE, and so on. With CREATE, ALTER, TRUNCATE, and DROP SQL statement (which concern entire table instead of certain rows), this functions gives back true if successful. Please be aware that both 0 and FALSE can be passed back for line requests, so be wary when verifying the value passed back.

SQL query must be scaped before SQL query execution to avoid SQL injectations. You can pass many arbitrary numbers by just pass more arbitrary parameters in a sprintf()-like manner. As an alternative, the second argument can be an array containing the value as in PHP's vsprintf() from.

It is important to note that no users are allowed to directly enter this value, which would allow arrays to manipulate any query with more than one placeholder. Value cannot be SQL-escaped. Returns the query argument for ready that will accept sprintf ()-like places. Supports %s (string), %d (integer) and %f (float) format. Any % character within SQL character strings literal, such as LIKE game cards, must be doubled % as %% escaped. However, this is not the case for all SQL character strings.

Do not enclose all of %d, %f, and %s in quotation marks in the query string. Otherwise, the query must be enclosed in quotation marks. Notice that the %d wildcard only allows integer numbers, so you cannot specify numbers with decimal places above %d. When you need decimal point value, use %f as floating instead. Same query with vsprintf ()-like parsing.

"Æ "Æ; " ", 10, $metakey, ) ); Remember that in this example, we are grouping the readings into an arrays. Rather than transferring the variable directly into the SQL query, you use a %s wildcard for character chains, a %d wildcard for integer numbers, and a %f wildcard for floating point numbers. Any number of arbitrary parameters can be passed, each as a new value in the prepare() function.

It is also possible to display the bug (if any) caused by the last query with expression ' print_error'. get_col_info to get information about the last query results containing the last query number. It can be useful if a command has an OBJECT whose attributes you do not know. Returns the information you want from the specified row, or an information pane of all rows in the query results if no row is specified. Enter the row style (string) What information you want to get.

Can take one of the following readings (list from zSQL documents). By default, the name is the default. name - name - column name. Display as Anray. None negativ whole number - Get information from the specified columns (0 is the first).

Empty the SQL results by flushing the SQL results memoryache. Last_query The last query made. You can store all requests made on the database and their stop timers by changing the SAVEQUERIES constants to TRUE (this constants is FALSE by default).

Lf SYVEQUERIES is True, your requests will be saved in this variables as an arrays. Last_result × The last query results. Col_info The information in the columns for the last query results. For more information, see Get columns information. Insert_id ID created for an AUTO_INCREMENT pillar by the last INSERT query.

The number of lines retrieved from the last query. AUDREY: $posts The table of posts. Remarks The Remarks Chart. Uncommentmeta The following tables contain extra information for commenting. otermmeta The terms used in the terms tables are defined as defined by me.

oterms The glossary contains the'description' of categories, links, tags. termin_taxonomy The termin_taxonomy spreadsheet contains the various types of taxes (classes of terms). This is a list of the relations between the item and the item that uses this item, i.e. this item points to each category that is used for each post.

Left The left link chart. This is the default setting for $options The Option Chart. Deblogs The Deblogs tab contains a listing of the individual deblogs (websites) that have been created within the network(s).

The Network Option (Site Meta) spreadsheet contains all the available network settings that apply to the whole multi-site install.

Mehr zum Thema