wp_unique_id() – Function | Developer.WordPress.org

wp_unique_id( string $prefix = ” ): string

Gets unique ID.

Description

This is a PHP implementation of Underscore’s uniqueId method. A static variable contains an integer that is incremented with each call. This number is returned with the optional prefix. As such the returned value is not universally unique, but it is unique across the life of the PHP process.

Parameters

$prefixstringoptional: Prefix for the returned ID.
Default:''

Return

string Unique ID.

Source

function wp_unique_id( $prefix = '' ) {
	static $id_counter = 0;
	return $prefix . (string) ++$id_counter;
}

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Used by	Description
WP_Duotone::render_duotone_support()`wp-includes/class-wp-duotone.php`	Render out the duotone CSS styles and SVG.

Changelog

Version	Description
5.0.3	Introduced.

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