$re = '@<p>(?:(?!本报记者)[^<>])*?本报记者[^<>]*</p>@';
$str = '接口的时间段是是的啊<p>本报记者ddfsd 网思想家</p>到家咯会计法
';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
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