PHP正则表达式preg_match_all(）介于[[和]]之间 - PHP regex preg_match_all() between [[ and ]]

PHP regex preg_match_all() between [[ and ]]

我想使用preg_match_all（）来提取[[和]]之间的内容，但忽略[[和]]]，因此例如此文本：

$text = <<<TEXT
Some text going here
[[ 1. this is a text ]]
another text but multiple lines
[[ 2. this 
is a 
text ]]
This should be ignored, haveing 3 on the left
[[[ 3. this is a text ]]
This should be ignored, haveing 3 on the right
[[ 4. this is a text ]]]
This should be ignored, haveing 3 both on the left and right
[[[ 5. this is a text ]]]
This is the final sentence.
[[ 6. this is a text ]]
TEXT;
if (preg_match_all("(?!<'[)('['[.*?']'])(?!'[)", $text, $tags, PREG_PATTERN_ORDER)) {
        $tags = $tags[0];
}
echo '<pre>';
print_r(tags);
echo '</pre>';

因此，只选择1.、2.和6。但是，我在上面尝试的regex选择了除2.之外的所有内容，没有按预期工作。

您可以使用以下模式：

preg_match_all('~(?<!'[)'['[(?!'[)([^]]*)]](?!])~', $text, $tags);

备注：
无需指定PREG_PATTER_ORDER，因为它是PREG_match*函数的默认集合
我为方括号内的内容添加了捕获括号，如果不需要，可以删除它们
如果标签内不允许使用方括号，则图案可以缩短为：

~(?<!'[)'['[([^][]*)]](?!])~

这里有一个正则表达式可以完成这项工作：

((?<!'[)'['[([^'[][^']]*)']'](?!']))

正则表达式101

分解

任何未由[
[[
任何字符[
任何字符，但]0次或更多次
]]
后面不跟a]

这应该是防弹的，除非它需要至少一个介于[[和]]之间的字符。

尝试：

preg_match_all('/('A|[^[])'[{2}[^[](?<content>[^]]+)[^]]']{2}([^]]|'z)/s', ...)

http://regex101.com/r/jC2mM0

http://codepad.viper-7.com/bbs3oR

Array
(
    [0] => Array
        (
            [0] => 
[[ 1. this is a text ]]
            [1] => 
[[ 2. this 
is a 
text ]]
            [2] => 
[[ 6. this is a text ]]
        )
    [1] => Array
        (
            [0] => 1. this is a text
            [1] => 2. this 
is a 
text
            [2] => 6. this is a text
        )
    [2] => Array
        (
            [0] => 
            [1] => 
            [2] => 
        )
)