在php中匹配格式变量=[[word]]中的word的简单正则表达式

我必须用格式示例搜索大量文本

traded_as = {{NASDAQ|GOOG}}<br>{{NASDAQ|GOOGL}}<br>[[Company name]]<br>.

试试下面的方法

preg_match('/\[\[([^]]*)\]]/', $txt, $match);
echo $match[1];

---

你还应该添加你已经尝试过的正则表达式。你可以先在类似的网站上尝试正则表达式。

preg_match('/\[\[([^]]*)\]]/', $txt, $match);
echo $match[1];

<?php
    $string = "{{NASDAQ|GOOG}}<br>{{NASDAQ|GOOGL}}<br>[[Company name]]<br>";
    preg_match('/\[\[(.*?)\]\]/', $string, $regs);
        $result = $regs[1];
        echo $result;
        //Company name
?>

Match the character “[” literally «\[»
Match the character “[” literally «\[»
Match the regular expression below and capture its match into backreference number 1 «(.*?)»
   Match any single character that is not a line break character «.*?»
      Between zero and unlimited times, as few times as possible, expanding as needed (lazy) «*?»
Match the character “]” literally «\]»
Match the character “]” literally «\]»