WordPress函数文档disabled()
发布于
by
根据已给URL查找pingback的服务器URI 描述 译文 根据已给URL查找pingback的服务器URI…
根据已给URL查找pingback的服务器URI
描述
译文
根据已给URL查找pingback的服务器URI
查找rel=”pingback” 链接与 x-pingback标题的xhtml代码。该函数可检查x-pingback标题，如果标题可用就将其返回。检查rel=”pingback”比检查标题要占用更多系统开销。
原文
Finds a pingback server URI based on the given URL.
Checks the xhtml for the rel=”pingback” link and x-pingback headers. It does a check for the x-pingback headers first and returns that, if available. The check for the rel=”pingback” has more overhead than just the header.
用法
<?php discover_pingback_server_uri( $url, $deprecated ) ?>
参数
$url
(string) (必填) URL to ping.
默认值: None
$deprecated
(integer) (Not Used.)
默认值: None
返回值
(boolean|string)
False on failure, string containing URI on success.
注意
- 使用到: wp_remote_get()
- 使用到: is_wp_error()
历史
添加于 版本: 1.5.0
源文件
discover_pingback_server_uri() 函数的代码位于 wp-includes/comment.php.
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
/* ———————————-
* wordpress函数 kim收集
* ———————————- */
/**
* Finds a pingback server URI based on the given URL.
*
* Checks the HTML for the rel=”pingback” link and x-pingback headers. It does
* a check for the x-pingback headers first and returns that, if available. The
* check for the rel=”pingback” has more overhead than just the header.
*
* @since 1.5.0
*
* @param string $url URL to ping.
* @param int $deprecated Not Used.
* @return false|string False on failure, string containing URI on success.
*/
function discover_pingback_server_uri( $url, $deprecated = ” ) {
if ( !empty( $deprecated ) )
_deprecated_argument( __FUNCTION__, ‘2.7’ );
$pingback_str_dquote = ‘rel=”pingback”‘;
$pingback_str_squote = ‘rel=’pingback”;
/** @todo Should use Filter Extension or custom preg_match instead. */
$parsed_url = parse_url($url);
if ( ! isset( $parsed_url[‘host’] ) ) // Not an URL. This should never happen.
return false;
//Do not search for a pingback server on our own uploads
$uploads_dir = wp_upload_dir();
if ( 0 === strpos($url, $uploads_dir[‘baseurl’]) )
return false;
$response = wp_safe_remote_head( $url, array( ‘timeout’ => 2, ‘httpversion’ => ‘1.0’ ) );
if ( is_wp_error( $response ) )
return false;
if ( wp_remote_retrieve_header( $response, ‘x-pingback’ ) )
return wp_remote_retrieve_header( $response, ‘x-pingback’ );
// Not an (x)html, sgml, or xml page, no use going further.
if ( preg_match(‘#(image|audio|video|model)/#is’, wp_remote_retrieve_header( $response, ‘content-type’ )) )
return false;
// Now do a GET since we’re going to look in the html headers (and we’re sure it’s not a binary file)
$response = wp_safe_remote_get( $url, array( ‘timeout’ => 2, ‘httpversion’ => ‘1.0’ ) );
if ( is_wp_error( $response ) )
return false;
$contents = wp_remote_retrieve_body( $response );
$pingback_link_offset_dquote = strpos($contents, $pingback_str_dquote);
$pingback_link_offset_squote = strpos($contents, $pingback_str_squote);
if ( $pingback_link_offset_dquote || $pingback_link_offset_squote ) {
$quote = ($pingback_link_offset_dquote) ? ‘”‘ : ”‘;
$pingback_link_offset = ($quote==’“‘) ? $pingback_link_offset_dquote : $pingback_link_offset_squote;
$pingback_href_pos = @strpos($contents, ‘href=’, $pingback_link_offset);
$pingback_href_start = $pingback_href_pos+6;
$pingback_href_end = @strpos($contents, $quote, $pingback_href_start);
$pingback_server_url_len = $pingback_href_end – $pingback_href_start;
$pingback_server_url = substr($contents, $pingback_href_start, $pingback_server_url_len);
// We may find rel=”pingback“ but an incomplete pingback URL
if ( $pingback_server_url_len > 0 ) { // We got it!
return $pingback_server_url;
}
}
return false;
}
|
- 原文：http://codex.wordpress.org/Function_Reference/discover_pingback_server_uri
类别：WordPress函数文档、
本文收集自互联网，转载请注明来源。
如有侵权，请联系 wper_net@163.com 删除。
猜你喜欢GUESS YOU LIKE
评论功能已经关闭!