WordPressを読む　10-6　/blog/wp-includes/functions.php 6

2014/11/22 2014/11/29

1 /blog/wp-includes/functions.php 6
2 読込元 : /blog/wp-settings.php
3 読込元 : /blog/wp-load.php
4 wp_get_nocache_headers()
5 nocache_headers()
6 cache_javascript_headers()
7 get_num_queries()
8 bool_from_yn()
9 do_feed()
10 do_feed_rdf()
11 do_feed_rss()
12 do_feed_rss2

/blog/wp-includes/functions.php 6

読込元 : /blog/wp-settings.php

読込元 : /blog/wp-load.php

関数

wp_get_nocache_headers()

/**
 * Get the header information to prevent caching.
 *
 * The several different headers cover the different ways cache prevention
 * is handled by different browsers
 *
 * @since 2.8.0
 *
 * @return array The associative array of header names and field values.
 */
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',
		'Pragma' => 'no-cache',
	);

	if ( function_exists('apply_filters') ) {
		/**
		 * Filter 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.
		 *     @type string $Pragma        Pragma header.
		 * }
		 */
		$headers = (array) apply_filters( 'nocache_headers', $headers );
	}
	$headers['Last-Modified'] = false;
	return $headers;
}

/**

* Get the header information to prevent caching.

* The several different headers cover the different ways cache prevention

* is handled by different browsers

* @since 2.8.0

* @return array The associative array of header names and field values.

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',

'Pragma' => 'no-cache',

);

if ( function_exists('apply_filters') ) {

/**

* Filter 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.

* @type string $Pragma Pragma header.

* }

$headers = (array) apply_filters( 'nocache_headers', $headers );

}

$headers['Last-Modified'] = false;

return $headers;

}

関数

nocache_headers()

/**
 * Set the headers to prevent caching for the different browsers.
 *
 * Different browsers support different nocache headers, so several
 * headers must be sent so that all of them get the point that no
 * caching should occur.
 *
 * @since 2.0.0
 *
 * @see wp_get_nocache_headers()
 */
function nocache_headers() {
	$headers = wp_get_nocache_headers();

	unset( $headers['Last-Modified'] );

	// In PHP 5.3+, make sure we are not sending a Last-Modified header.
	if ( function_exists( 'header_remove' ) ) {
		@header_remove( 'Last-Modified' );
	} else {
		// In PHP 5.2, send an empty Last-Modified header, but only as a
		// last resort to override a header already sent. #WP23021
		foreach ( headers_list() as $header ) {
			if ( 0 === stripos( $header, 'Last-Modified' ) ) {
				$headers['Last-Modified'] = '';
				break;
			}
		}
	}

	foreach( $headers as $name => $field_value )
		@header("{$name}: {$field_value}");
}

/**

* Set the headers to prevent caching for the different browsers.

* Different browsers support different nocache headers, so several

* headers must be sent so that all of them get the point that no

* caching should occur.

* @since 2.0.0

* @see wp_get_nocache_headers()

function nocache_headers() {

$headers = wp_get_nocache_headers();

unset( $headers['Last-Modified'] );

// In PHP 5.3+, make sure we are not sending a Last-Modified header.

if ( function_exists( 'header_remove' ) ) {

@header_remove( 'Last-Modified' );

} else {

// In PHP 5.2, send an empty Last-Modified header, but only as a

// last resort to override a header already sent. #WP23021

foreach ( headers_list() as $header ) {

if ( 0 === stripos( $header, 'Last-Modified' ) ) {

$headers['Last-Modified'] = '';

break;

}

foreach( $headers as $name => $field_value )

@header("{$name}: {$field_value}");

}

関数

cache_javascript_headers()

/**
 * Set the headers for caching for 10 days with JavaScript content type.
 *
 * @since 2.1.0
 */
function cache_javascript_headers() {
	$expiresOffset = 10 * DAY_IN_SECONDS;

	header( "Content-Type: text/javascript; charset=" . get_bloginfo( 'charset' ) );
	header( "Vary: Accept-Encoding" ); // Handle proxies
	header( "Expires: " . gmdate( "D, d M Y H:i:s", time() + $expiresOffset ) . " GMT" );
}

/**

* Set the headers for caching for 10 days with JavaScript content type.

* @since 2.1.0

function cache_javascript_headers() {

$expiresOffset = 10 * DAY_IN_SECONDS;

header( "Content-Type: text/javascript; charset=" . get_bloginfo( 'charset' ) );

header( "Vary: Accept-Encoding" ); // Handle proxies

header( "Expires: " . gmdate( "D, d M Y H:i:s", time() + $expiresOffset ) . " GMT" );

}

関数

get_num_queries()

/**
 * Retrieve the number of database queries during the WordPress execution.
 *
 * @since 2.0.0
 *
 * @global wpdb $wpdb WordPress database access abstraction object.
 *
 * @return int Number of database queries.
 */
function get_num_queries() {
	global $wpdb;
	return $wpdb->num_queries;
}

/**

* Retrieve the number of database queries during the WordPress execution.

* @since 2.0.0

* @global wpdb $wpdb WordPress database access abstraction object.

* @return int Number of database queries.

function get_num_queries() {

global $wpdb;

return $wpdb->num_queries;

}

関数

bool_from_yn()

/**
 * Whether input is yes or no.
 *
 * Must be 'y' to be true.
 *
 * @since 1.0.0
 *
 * @param string $yn Character string containing either 'y' (yes) or 'n' (no).
 * @return bool True if yes, false on anything else.
 */
function bool_from_yn( $yn ) {
	return ( strtolower( $yn ) == 'y' );
}

/**

* Whether input is yes or no.

* Must be 'y' to be true.

* @since 1.0.0

* @param string $yn Character string containing either 'y' (yes) or 'n' (no).

* @return bool True if yes, false on anything else.

function bool_from_yn( $yn ) {

return ( strtolower( $yn ) == 'y' );

}

関数

do_feed()

/**
 * Load the feed template from the use of an action hook.
 *
 * If the feed action does not have a hook, then the function will die with a
 * message telling the visitor that the feed is not valid.
 *
 * It is better to only have one hook for each feed.
 *
 * @since 2.1.0
 *
 * @uses $wp_query Used to tell if the use a comment feed.
 */
function do_feed() {
	global $wp_query;

	$feed = get_query_var( 'feed' );

	// Remove the pad, if present.
	$feed = preg_replace( '/^_+/', '', $feed );

	if ( $feed == '' || $feed == 'feed' )
		$feed = get_default_feed();

	$hook = 'do_feed_' . $feed;
	if ( ! has_action( $hook ) )
		wp_die( __( 'ERROR: This is not a valid feed template.' ), '', array( 'response' => 404 ) );

	/**
	 * Fires once the given feed is loaded.
	 *
	 * The dynamic hook name, $hook, refers to the feed name.
	 *
	 * @since 2.1.0
	 *
	 * @param bool $is_comment_feed Whether the feed is a comment feed.
	 */
	do_action( $hook, $wp_query->is_comment_feed );
}

/**

* Load the feed template from the use of an action hook.

* If the feed action does not have a hook, then the function will die with a

* message telling the visitor that the feed is not valid.

* It is better to only have one hook for each feed.

* @since 2.1.0

* @uses $wp_query Used to tell if the use a comment feed.

function do_feed() {

global $wp_query;

$feed = get_query_var( 'feed' );

// Remove the pad, if present.

$feed = preg_replace( '/^_+/', '', $feed );

if ( $feed == '' || $feed == 'feed' )

$feed = get_default_feed();

$hook = 'do_feed_' . $feed;

if ( ! has_action( $hook ) )

wp_die( __( 'ERROR: This is not a valid feed template.' ), '', array( 'response' => 404 ) );

/**

* Fires once the given feed is loaded.

* The dynamic hook name, $hook, refers to the feed name.

* @since 2.1.0

* @param bool $is_comment_feed Whether the feed is a comment feed.

do_action( $hook, $wp_query->is_comment_feed );

}

関数

do_feed_rdf()

/**
 * Load the RDF RSS 0.91 Feed template.
 *
 * @since 2.1.0
 *
 * @see load_template()
 */
function do_feed_rdf() {
	load_template( ABSPATH . WPINC . '/feed-rdf.php' );
}

/**

* Load the RDF RSS 0.91 Feed template.

* @since 2.1.0

* @see load_template()

function do_feed_rdf() {

load_template( ABSPATH . WPINC . '/feed-rdf.php' );

}

関数

do_feed_rss()

/**
 * Load the RSS 1.0 Feed Template.
 *
 * @since 2.1.0
 *
 * @see load_template()
 */
function do_feed_rss() {
	load_template( ABSPATH . WPINC . '/feed-rss.php' );
}

/**

* Load the RSS 1.0 Feed Template.

* @since 2.1.0

* @see load_template()

function do_feed_rss() {

load_template( ABSPATH . WPINC . '/feed-rss.php' );

}

関数

do_feed_rss2

/**
 * Load either the RSS2 comment feed or the RSS2 posts feed.
 *
 * @since 2.1.0
 *
 * @see load_template()
 *
 * @param bool $for_comments True for the comment feed, false for normal feed.
 */
function do_feed_rss2( $for_comments ) {
	if ( $for_comments )
		load_template( ABSPATH . WPINC . '/feed-rss2-comments.php' );
	else
		load_template( ABSPATH . WPINC . '/feed-rss2.php' );
}

/**

* Load either the RSS2 comment feed or the RSS2 posts feed.

* @since 2.1.0

* @see load_template()

* @param bool $for_comments True for the comment feed, false for normal feed.

function do_feed_rss2( $for_comments ) {

if ( $for_comments )

load_template( ABSPATH . WPINC . '/feed-rss2-comments.php' );

else

load_template( ABSPATH . WPINC . '/feed-rss2.php' );

}

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WordPressを読む 10-6 /blog/wp-includes/functions.php 6

/blog/wp-includes/functions.php 6

WordPressを読む　10-6　/blog/wp-includes/functions.php 6