Question

wp_cache_get_last_changed( string $group )

Get last changed date for the specified cache group.

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参数

$group

(string)
(Required)
Where the cache contents are grouped.

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返回值

(string) $last_changed UNIX timestamp with microseconds representing when the group was last changed.

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源代码

File: wp-includes/functions.php

function wp_cache_get_last_changed( $group ) {
	$last_changed = wp_cache_get( 'last_changed', $group );

	if ( ! $last_changed ) {
		$last_changed = microtime();
		wp_cache_set( 'last_changed', $last_changed, $group );
	}

	return $last_changed;
}

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更新日志

Version	description
4.7.0	Introduced.

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相关函数

Uses

• wp-includes/cache.php:wp_cache_get()
• wp-includes/cache.php:wp_cache_set()