Question

wp_get_nocache_headers()

Get the header information to prevent caching.

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description

The several different headers cover the different ways cache prevention is handled by different browsers

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返回值

(array) The associative array of header names and field values.

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源代码

File: wp-includes/functions.php

function wp_get_nocache_headers() {
	$headers = array(
		'Expires' => 'Wed, 11 Jan 1984 05:00:00 GMT',
		'Cache-Control' => 'no-cache, must-revalidate, max-age=0',
	);

	if ( function_exists('apply_filters') ) {
		/**
		 * Filters the cache-controlling headers.
		 *
		 * @since 2.8.0
		 *
		 * @see wp_get_nocache_headers()
		 *
		 * @param array $headers {
		 *     Header names and field values.
		 *
		 *     @type string $Expires       Expires header.
		 *     @type string $Cache-Control Cache-Control header.
		 * }
		 */
		$headers = (array) apply_filters( 'nocache_headers', $headers );
	}
	$headers['Last-Modified'] = false;
	return $headers;
}

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更新日志

Version	description
2.8.0	Introduced.

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相关函数

Uses

• wp-includes/functions.php: nocache_headers
• wp-includes/plugin.php: apply_filters()

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Used By

• wp-includes/rest-api/class-wp-rest-server.php: WP_REST_Server::serve_request()
• wp-includes/class-wp.php: WP::send_headers()
• wp-includes/functions.php: nocache_headers()

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User Contributed Notes