php正则表达式解析，保持标签内容不变

Question

输入字符串：

<sometag> valid content .....
....line break    some more valid content</sometag>

输出字符串：

    valid content.....
......line break some more valid content

请让我知道怎么做，谢谢。

Answer 1

您可以使用strip_tags() PHP函数而不是正则表达式。 See manual.

<?php
  $str = "<sometag> valid content .....
  ....line break    some more valid content</sometag>";
  echo strip_tags($str);

  //valid content .....
  //....line break    some more valid content
?>

Answer 2

$oldstring = "<sometag> valid content ..... ....line break    some more valid content</sometag>";

$newstring = preg_replace('/\b<sometag>\b/', '', $oldstring); 
$newstring = preg_replace('/\b</sometag>\b/', '', $newstring);
$newstring = preg_replace('<br/>', '', $newstring);

假设换行符你的意思是<br/>

Answer 3

$string = '<sometag> valid content .....
....line break    some more valid content</sometag>';

$string = preg_replace('/<[^>]+>/', '', $string);