如何将ereg（）表达式转换为preg_match（）一个？ [重复]

^\\d{8}\\t\\d{2}:\\d{2}:\\d{2}$

preg

[0-9]

\\d

{1}

:

$subject = \'the string i want to search through\';
$pattern = \'/^[0-9]{8}\\T{1}[0-9]{2}\\:[0-9]{2}\\:[0-9]{2}$/\';
$matches = array();
preg_match($pattern, $subject, $matches);

print_r($matches);