WP_Object_Cache::incr( int|string $key, int $offset = 1, string $group = 'default' )

Increments numeric cache item’s value.


Parameters

$key

(Required) The cache key to increment

$offset

(Optional) The amount by which to increment the item's value.

Default value: 1

$group

(Optional) The group the key is in. Default 'default'.

Default value: 'default'


Return

(false|int) False on failure, the item's new value on success.


Source

File: wp-includes/cache.php

	public function incr( $key, $offset = 1, $group = 'default' ) {
		if ( empty( $group ) )
			$group = 'default';

		if ( $this->multisite && ! isset( $this->global_groups[ $group ] ) )
			$key = $this->blog_prefix . $key;

		if ( ! $this->_exists( $key, $group ) )
			return false;

		if ( ! is_numeric( $this->cache[ $group ][ $key ] ) )
			$this->cache[ $group ][ $key ] = 0;

		$offset = (int) $offset;

		$this->cache[ $group ][ $key ] += $offset;

		if ( $this->cache[ $group ][ $key ] < 0 )
			$this->cache[ $group ][ $key ] = 0;

		return $this->cache[ $group ][ $key ];
	}


Changelog

Changelog
Version Description
WP-3.3.0 Introduced.