PHP 8.3.0 RC 6 available for testing

DOMDocument::createComment

(PHP 5, PHP 7, PHP 8)

DOMDocument::createCommentCreate new comment node

说明

public DOMDocument::createComment(string $data): DOMComment

This function creates a new instance of class DOMComment. 此节点出现在文档中,除非是用诸如 DOMNode->appendChild() 等函数来将其插入。

参数

data

The content of the comment.

返回值

The new DOMComment.

更新日志

版本 说明
8.1.0 In case of an error, a DomException is thrown now. Previously, false was returned.

参见

add a note

User Contributed Notes 2 notes

up
-1
php dot sirlancelot at spamgourmet dot com
13 years ago
To prevent a parser error when the comment string would contain the character sequence "--", do this:

<?php

$CommentString
= 'This contains -- some weird -- characters.';

$CommentNode = $DomDocument->createComment(
str_replace('--', '-'.chr(194).chr(173).'-', $CommentString)
);
?>

This will insert a Soft Hyphen in between the two hyphens which will not cause the parser to error out.
up
-8
capps at solareclipse dot net
16 years ago
Use caution: this function does NOT escape, encode, or otherwise change the contents of the string.

This means that if your string contains two hyphens in a row (--), that will *end* the comment, which can easily create invalid XML when the document is serialized.
To Top