Function Reference/wp set object terms

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Description

Relates an object (post, link etc) to a term and taxonomy type (tag, category, etc). Creates the term and taxonomy relationship if it doesn't already exist.

A relationship means that the term is grouped in or belongs to the taxonomy. A term has no meaning until it is given context by defining which taxonomy it exists under.

Usage

%%% <?php wp_set_object_terms( $object_id, $terms, $taxonomy, $append ) ?> %%%

Parameters

tt$object_id/tt
(int) (required) The object to relate to, such as post ID.
Default: Nonenoinclude

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Notes

This template is for standardizing how parameters look in the Function Reference and in Template Tags. Here is an example of this template being called: prenowiki检查到模板循环:模板:Parameter/nowiki/pre 检查到模板循环:模板:Parameter

The usage of this template is below: prenowiki检查到模板循环:模板:Parameter/nowiki/pre Let's take a closer look at the parameters..

name
The name of the parameter.
datatype
The datatype that should be given for this parameter when called.
  • string
  • integer
  • boolean
  • mixed
description
A short description of the parameter.
importance
Set this parameter to optional if the parameter is optional. Otherwise, do not declare this parameter—it defaults to required.
  • required
  • optional
default
If this parameter is optional, ttdefault/tt is the value that will be used if the parameter is not declared.

wordpress.org.cn /div /noinclude

tt$terms/tt
(array/int/string) (required) The slug or id of the term (such as category or tag IDs), will replace all existing related terms in this taxonomy. To clear or remove all terms from an object, pass an empty string or NULL. Integers are interpreted as tag IDs.
Default: Nonenoinclude

div class=template-description style=padding: 0 1.5em; border: 1px solid #eeeeee; background-color: #f9f9f9

Notes

This template is for standardizing how parameters look in the Function Reference and in Template Tags. Here is an example of this template being called: prenowiki检查到模板循环:模板:Parameter/nowiki/pre 检查到模板循环:模板:Parameter

The usage of this template is below: prenowiki检查到模板循环:模板:Parameter/nowiki/pre Let's take a closer look at the parameters..

name
The name of the parameter.
datatype
The datatype that should be given for this parameter when called.
  • string
  • integer
  • boolean
  • mixed
description
A short description of the parameter.
importance
Set this parameter to optional if the parameter is optional. Otherwise, do not declare this parameter—it defaults to required.
  • required
  • optional
default
If this parameter is optional, ttdefault/tt is the value that will be used if the parameter is not declared.

wordpress.org.cn /div /noinclude

tt$taxonomy/tt
(array/string) (required) The context in which to relate the term to the object. This can be category, post_tag, or the name of another taxonomy.
Default: Nonenoinclude

div class=template-description style=padding: 0 1.5em; border: 1px solid #eeeeee; background-color: #f9f9f9

Notes

This template is for standardizing how parameters look in the Function Reference and in Template Tags. Here is an example of this template being called: prenowiki检查到模板循环:模板:Parameter/nowiki/pre 检查到模板循环:模板:Parameter

The usage of this template is below: prenowiki检查到模板循环:模板:Parameter/nowiki/pre Let's take a closer look at the parameters..

name
The name of the parameter.
datatype
The datatype that should be given for this parameter when called.
  • string
  • integer
  • boolean
  • mixed
description
A short description of the parameter.
importance
Set this parameter to optional if the parameter is optional. Otherwise, do not declare this parameter—it defaults to required.
  • required
  • optional
default
If this parameter is optional, ttdefault/tt is the value that will be used if the parameter is not declared.

wordpress.org.cn /div /noinclude

tt$append/tt
(bool) (required) If true, tags will be appended to the object. If false, tags will replace existing tags
Default: Falsenoinclude

div class=template-description style=padding: 0 1.5em; border: 1px solid #eeeeee; background-color: #f9f9f9

Notes

This template is for standardizing how parameters look in the Function Reference and in Template Tags. Here is an example of this template being called: prenowiki检查到模板循环:模板:Parameter/nowiki/pre 检查到模板循环:模板:Parameter

The usage of this template is below: prenowiki检查到模板循环:模板:Parameter/nowiki/pre Let's take a closer look at the parameters..

name
The name of the parameter.
datatype
The datatype that should be given for this parameter when called.
  • string
  • integer
  • boolean
  • mixed
description
A short description of the parameter.
importance
Set this parameter to optional if the parameter is optional. Otherwise, do not declare this parameter—it defaults to required.
  • required
  • optional
default
If this parameter is optional, ttdefault/tt is the value that will be used if the parameter is not declared.

wordpress.org.cn /div /noinclude

Returns

(mixed) 
  • (array) An array of the terms affected if successful,
  • (WP_Error) The WordPress Error object on invalid taxonomy ('invalid_taxonomy').
  • (string) The first offending term if a term given in the $terms parameter is named incorrectly. (Invalid term ids are accepted and inserted).

Examples

If you wanted to add a categories to a post with the ID of 42:

<?php
$cat_ids = array( 6,8 );
    //to make sure the terms IDs is integers:
    //$cat_ids = array_map('intval', $cat_ids);
    //$cat_ids = array_unique( $cat_ids );
wp_set_object_terms( '42', $cat_ids, 'category' );
?>

If you wanted to clear/remove all categories from a post with the ID of 42:

<?php wp_set_object_terms( '42', NULL, 'category' ); ?>

Change Log

Notes

Perhaps the wp_set_post_terms() is a more useful function, since it checks the values​​, converting taxonomies separated by commas and validating hierarchical terms in integers.

Source File

wp_set_object_terms() is located in onlyincludecodewp-includes/taxonomy.php/code/onlyinclude

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Template Description

Link to the source code on http://core.trac.wordpress.org/browser/.

Parameters

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  2. (option) path to codetag/code (version) or codetrunk/code. This option is only used for a new function.br /Default: codetrunk/code -- trunk is the latest bleeding edge development version of WordPress.

Usage

Link to the stable version: pre检查到模板循环:模板:Trac/pre

Link to trunk: pre检查到模板循环:模板:Trac/pre

/div

wordpress.org.cn.

Related

Terms: is_term, term_exists, get_term, get_term_by, get_term_children, get_terms, sanitize term, wp_get_object_terms

includeonlydiv style=clear:both; background-color:#F7F7F7; border:1px solid #CCCCCC; color:#000000; padding:7px; margin:0.5em auto 0.5em auto; vertical-align:middle;See also index of Function Reference and index of Template Tags./div/includeonlynoinclude

Description

This Template is used by Codex:Template Messages.

Usage

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Result

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/noinclude