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php怎么检测字符串是否包含html代码

  3. function has_html($string){

  4. if(strlen($string) != strlen(strip_tags($string))){
  5. return true;
  6. }
  7. return false;
  8. }

  9. var_dump(has_html("This string doesn't have any html"));

  10. var_dump(has_html("This string has a
    line break"));