令人满意的是，不要进入耗时的函数。
数据格式:它基本上与HTML标记参数相似，但又不完全相同。
<name1=value1 name2=value2 [here can be any whitespace characters]
33=55 "name with spaces and ="="value with spaces and '" '"title"'="can't" "in
names"="and
values can be tabs and new lines"
double"and_single'quotes=are_allowed_in_names_and_values_if_there_is_no_whitespace_in_it
"escaping is ""sql-like"""='the same with ''single quotes'''
`third option`=`are "backticks" that also can be ``escaped```>
这个格式被调用了吗?我自己"发明"了它，但我非常怀疑以前没有人提出过这个想法，也许它(或非常类似的格式，例如斜杠转义)已经在php中有解析函数了?
如果没有，如何写自己的，使用正则表达式，字符串操作，某种类型的缓冲区，累加器?我自己从来没有写过任何解析器
试试这样:
$in = <<<BLOCK
name1=value1
name2=value2 [here can be any whitespace characters]
33=55
"name with spaces and ="="value with spaces and '"
'"title"'="can't"
"in names"="and
values can be tabs and new lines"
double"and_single'quotes=are_allowed_in_names_and_values_if_there_is_no_whitespace_in_it
"escaping is ""sql-like"""='the same with ''single quotes'''
`third option`=`are "backticks" that also can be ``escaped```
BLOCK;
$string = "(?: # open non-capture group
'"(?:'"'"|[^'"])+'" # match a double quoted string
| '(?:''|[^'])+' # OR match a single quoted string
| `(?:``|[^`])+` # OR match a back-ticked string
) # close non-capture group
";
$key = "( # start capture group 1
$string # match any string
| [^='s]+ # OR match one or more chars other than '=' and space-chars
) # end capture group 1
";
$value = "( # start capture group 2
$string # match any string
| [^'r'n]+ # OR match one or more chars other than '=' and space-chars
) # end capture group 2
";
$regex = "/$key=$value/x"; // combine the patterns
preg_match_all($regex, $in, $matches);
$key_value_pairs = sizeof($matches[0]);
for($index = 0; $index < $key_value_pairs; $index++) {
echo "==============================================='n" .
"KEY:'n" . $matches[1][$index] . "'n" .
"VALUE:'n" . $matches[2][$index] . "'n";
}
将打印以下内容:
===============================================
KEY:
name1
VALUE:
value1
===============================================
KEY:
name2
VALUE:
value2 [here can be any whitespace characters]
===============================================
KEY:
33
VALUE:
55
===============================================
KEY:
"name with spaces and ="
VALUE:
"value with spaces and '"
===============================================
KEY:
'"title"'
VALUE:
"can't"
===============================================
KEY:
"in names"
VALUE:
"and
values can be tabs and new lines"
===============================================
KEY:
double"and_single'quotes
VALUE:
are_allowed_in_names_and_values_if_there_is_no_whitespace_in_it
===============================================
KEY:
"escaping is ""sql-like"""
VALUE:
'the same with ''single quotes'''
===============================================
KEY:
`third option`
VALUE:
`are "backticks" that also can be ``escaped```
使用和维护，风险自负!
允许在名称中使用空格的XML示例
<item>
<name>name with spaces</name>
<value>
value with spaces
and linebreaks
</value>
</item>