$re = '/(?<!\])<http(s)?:\/\/([^[\]]+?)>(?!\])/';
$str = 'xxx
2. 使用`Jetbrains Mono`<https://github.com/JetBrains/JetBrainsMono>等宽字体进行代码高亮
2. 使用`Jetbrains https://github.com/JetBrains/JetBrainsMono等宽字体进行代码高亮
代码是开放的,自取:<https://github.com/ttys3/hugo-theme-terminal/tree/ttys3>
xxxx';
$subst = "http\$1://\$2";
$result = preg_replace($re, $subst, $str);
echo "The result of the substitution is ".$result;
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php