Question

我想创造像smarty这样的东西，但我不想使用Smarty，因为我需要更多JS功能......

我想解析一下：

{{crossLoopStart fromController->messages as message and increment|i every loop}}
wow, this is message number {{message->id}} and text is: {{message->text}}
{{crossLoopEmpty}}
oh no! You haven't any message!
{{crossLoopEnd}}

我做了这个REGEXP：

/\{\{crossLoopStart\s([a-zA-Z0-9>-]+)\s(as\s([a-zA-Z>-]+))?\s?and\s(([a-zA-Z0-9]+\|)?([a-zA-Z0-9]+)\s([a-z]+)\sloop)?\}\}(.+)/

但问题是，当我使用(.+)时（在我的REGEXP的末尾），它会获得所有字符：

wow, this is message number {{message->id}} and text is: {{message->text}}
{{crossLoopEmpty}}
oh no! You haven't any message!
{{crossLoopEnd}}

但我想只得到这个：

wow, this is message number {{message->id}} and text is: {{message->text}}

不是强制性部分：

{{crossLoopEmpty}}
oh no! You haven't any message!

我需要获取所有文字，结束标记符号“crossLoopStart”}} ，并以开头标记字符“crossLoopEmpty”或“crossLoopEnd”结尾 {{

Answer 1

我真的不知道你感兴趣的是什么，但以下模式可能会给你所需的部分。

/\{\{crossLoopStart\s([a-zA-Z0-9>-]+)\s(as\s([a-zA-Z>-]+))?\s?and\s(([a-zA-Z0-9]+\|)?([a-zA-Z0-9]+)\s([a-z]+)\sloop)?\}\}(.*?)\{\{crossLoopEmpty\}\}(.*?)\{\{crossLoopEnd\}\}/

使用preg_match可以得到以下结果：

Array
(
    [0] => {{crossLoopStart fromController->messages as message and increment|i every loop}} wow, this is message number {{message->id}} and text is: {{message->text}} {{crossLoopEmpty}} oh no! You haven't any message! {{crossLoopEnd}}
    [1] => fromController->messages
    [2] => as message
    [3] => message
    [4] => increment|i every loop
    [5] => increment|
    [6] => i
    [7] => every
    [8] =>  wow, this is message number {{message->id}} and text is: {{message->text}} 
    [9] =>  oh no! You haven't any message! 
)

Answer 2

{{crossLoopStart \ S（[A-ZA-Z0-9＆GT; - ] +）\ S（如\ S（[A-ZA-Z＆GT; - ] +））？\ S和\ S（（ [A-ZA-Z0-9] + \ |？）（[A-ZA-Z0-9] +）\ S（[AZ] +）\桅）}} [AZ \，\ s]的{1，（？）} \砂[AZ \ s]的{1，} \：（？）\ S {{crossLoopEmpty}} \ S（？*）\ S {{crossLoopEnd}}

使用preg_match（regexp，$ string，$ match）;

Answer 3

如果省略某些参数怎么办？你如何控制你的比赛？我认为你需要使用命名捕获组。

$r = '/(?P<params>(?<={{crossLoopStart)[^\n]*(?=}}$))}}(?P<content>.+(?={{crossLoopEnd}})){{crossLoopEnd}}/ms';
$m = preg_match($r, $t, $matches);
$params = $matches['params'];
$content = $matches['content'];
$empty_content = '';

if (preg_match('/(?P<content>.*){{crossLoopEmpty}}(?P<emptyContent>.*)/ms', $content, $matches)) {
    $content = $matches['content'];
    $empty_content = $matches['emptyContent'];
}
var_dump($params, $content, $empty_content);

通过这种方式，您可以知道您的参数，内容等位于何处。

string(63) " fromController->messages as message and increment|i every loop"
string(76) "
wow, this is message number {{message->id}} and text is: {{message->text}}
"
string(33) "
oh no! You haven't any message!
"

然后以类似的方式解析你的参数。

REGEXP喜欢Smarty，但并不完全如此

3 个答案: