add_blog_option() – Function | Developer.WordPress.org

Adds a new option for a given blog ID.

Description

You do not need to serialize values. If the value needs to be serialized, then it will be serialized before it is inserted into the database. Remember, resources can not be serialized or added as an option.

You can create options without values and then update the values later.
Existing options will not be updated and checks are performed to ensure that you aren’t adding a protected WordPress option. Care should be taken to not name options the same as the ones which are protected.

Parameters

$idintrequired: A blog ID. Can be null to refer to the current blog.
$optionstringrequired: Name of option to add. Expected to not be SQL-escaped.
$valuemixedrequired: Option value, can be anything. Expected to not be SQL-escaped.

Return

bool True if the option was added, false otherwise.

Source

function add_blog_option( $id, $option, $value ) {
	$id = (int) $id;

	if ( empty( $id ) ) {
		$id = get_current_blog_id();
	}

	if ( get_current_blog_id() === $id ) {
		return add_option( $option, $value );
	}

	switch_to_blog( $id );
	$return = add_option( $option, $value );
	restore_current_blog();

	return $return;
}

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Uses	Description
switch_to_blog()`wp-includes/ms-blogs.php`	Switches the current blog.
add_option()`wp-includes/option.php`	Adds a new option.
restore_current_blog()`wp-includes/ms-blogs.php`	Restores the current blog, after calling switch_to_blog() .
get_current_blog_id()`wp-includes/load.php`	Retrieves the current site ID.

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Changelog

Version	Description
MU (3.0.0)	Introduced.

User Contributed Notes

Skip to note 2 content

MakeWebBetter 4 years ago

You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note
Usage of add_blog_option() for multisite.
```
// passing $blogID for which option need to add
function wpdocs_MWBOption( $name, $value, $blogID ) {
     if ( is_multisite() ) {
         return add_blog_option( $blogID, $name, $value );
     }
     return add_option( $name, $value );
}
```
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add_blog_option( int $id, string $option, mixed $value ): bool

In this article

Description

Parameters

Return

Source

Changelog

User Contributed Notes

add_blog_option( int $id, string $option, mixed $value ): bool

In this article

Description

Parameters

Return

Source

Related

Changelog

User Contributed Notes