如何在php中获取没有类和id的div内容

我在php中有一个div（string），我想获取内容

比如说--

呜呜呜呜
布拉布拉

我想要--

呜呜呜呜
布拉布拉

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对于这类任务，我没有可以使用的div id或class

有用功能：

preg_filter — Perform a regular expression search and replace
preg_grep — Return array entries that match the pattern
preg_last_error — Returns the error code of the last PCRE regex execution
preg_match_all — Perform a global regular expression match
preg_match — Perform a regular expression match
preg_quote — Quote regular expression characters
preg_replace_callback — Perform a regular expression search and replace using a callback
preg_replace — Perform a regular expression search and replace
preg_split — Split string by a regular expression

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这与PHP有什么关系？你到底为什么要用PHP来做这件事？@Dai我想在这个div下获取数据以供某些用途。@Mr.Alien我想在这个div下获取数据以供某些用途。你不知道div、id或class，但你知道PHP吗？

<div>
     bla bla bla
</div>
     bla bla

preg_filter — Perform a regular expression search and replace
preg_grep — Return array entries that match the pattern
preg_last_error — Returns the error code of the last PCRE regex execution
preg_match_all — Perform a global regular expression match
preg_match — Perform a regular expression match
preg_quote — Quote regular expression characters
preg_replace_callback — Perform a regular expression search and replace using a callback
preg_replace — Perform a regular expression search and replace
preg_split — Split string by a regular expression