xml_parser_create
(PHP 4, PHP 5, PHP 7, PHP 8)
xml_parser_create — 创建 XML 解析器
说明
xml_parser_create() 新建 XML 解析器并返回可被其它 XML 函数使用的 XMLParser 实例。
参数
encoding-
自动检测输入编码，因此
encoding参数仅指定输出编码。默认输出字符集是 UTF-8。如果传递的是空字符串，解析器会尝试通过查看头的的 3 或 4 个字节来识别文档的编码方式。支持的编码有ISO-8859-1、UTF-8和US-ASCII。
返回值
返回新 XMLParser 实例。
＋添加备注
用户贡献的备注 5 notes
marek995 at seznam dot cz ¶
14 years ago
I created a function, which combines xml_paresr_create and all functions around.
<?php
function html_parse($file)
{
$array = str_split($file, 1);
$count = false;
$text = "";
$end = false;
foreach($array as $temp)
{
switch($temp)
{
case "<":
between($text);
$text = "";
$count = true;
$end = false;
break;
case ">":
if($end == true) {end_tag($text);}
else {start_tag($text);}
$text = "";
break;
case "/":
if($count == true) {$end = true;}
else {$text = $text . "/";}
break;
default:
$count = false;
$text = $text . $temp;
}
}
}
?>
The input value is a string.
It calls functions start_tag() , between() and end_tag() just like the original xml parser.
But it has a few differences:
- It does NOT check the code. Just resends values to that three functions, no matter, if they are right
- It works with parameters. For example: from tag <sth b="42"> sends sth b="42"
- It works wit diacritics. The original parser sometimes wrapped the text before the first diacritics appearance.
- Works with all encoding. If the input is UTF-8, the output will be UTF-8 too
- It works with strings. Not with file pointers.
- No "Reserved XML name" error
- No doctype needed
- It does not work with commentaries, notes, programming instructions etc. Just the tags
definition of the handling functions is:
<?php
function between($stuff) {}
?>
No other attributes
jcalvert at gmx dot net ¶
20 years ago
To maintain compatibility between PHP4 and PHP5 you should always pass a string argument to this function. PHP4 autodetects the format of the input if you leave it out whereas PHP5 will assume the format to be ISO-8859-1 (and choke on the byte order marker of UTF-8 files).
Calling the function as <?php $res = xml_parser_create('') ?> will cause both versions of PHP to autodetect the format.
Tobbe ¶
19 years ago
The above "XML to array" code does not work properly if you have several tags on the same level and with the same name, example:
<currenterrors>
<error>
<description>This is a real error...</description>
</error>
<error>
<description>This is a second error...</description>
</error>
<error>
<description>Lots of errors today...</description>
</error>
<error>
<description>This is the last error...</description>
</error>
</currenterrors>
It will then only display the first <error>-tag.
In this case you will need to number the tags automatically or maybe have several arrays for each new element.
php at stock-consulting dot com ¶
20 years ago
Even though I passed "UTF-8" as encoding type PHP (Version 4.3.3) did *not* treat the input file as UTF-8. The input file was missing the BOM header bytes (which may indeed be omitted, according to RFC3629...but things are a bit unclear there. The RFC seems to make mere recommendations concering the BOM header). If you want to sure that PHP treats an UTF-8 encoded file correctly, make sure that it begins with the corresponding 3 byte BOM header (0xEF 0xBB 0xBF)
bishop at php dot net ¶
6 years ago
Internals has proposed[1] changing this extension from resource-based to object-based. When this change is made, xml_parser_create will return an object, not a resource. Application developers are encouraged to replace any checks for explicit success, like:
<?php
$res = xml_parser_create(/*...*/);
if (! is_resource($res)) {
// ...
}
?>
With a check for explicit failure:
<?php
$res = xml_parser_create(/*...*/);
if (false === $res) {
// ...
}
[1]: https://marc.info/?l=php-internals&m=154998365013373&w=2备份地址：http://www.lvesu.com/blog/php/function.xml-parser-create.php