PHP regex to allow newline didn't work -

PHP regex to allow newline didn't work -

php preg_match take new line

i want pass every post/string through php preg_match function. want take alpha-numerics , special characters. help me edit syntax allow newline. users fill textarea , press enter. next syntax not allow new line.

please feedback whether next special characters done or not */_:,.?@;-*

if (preg_match("/^[0-9a-za-z \/_:,.?@;-]+$/", $string)) { echo 'good'; else { echo 'bad'; }

you there!

the dotall modifier mentioned others irrelevant regex.

to allow new lines, add together \r\n character class. code becomes:

if (preg_match("/^[\r\n0-9a-za-z \/_:,.?@;-]+$/", $string)) { echo 'good'; else { echo 'bad'; }

note test , regex can written in tidier way:

echo (preg_match("~^[\r\n\w /:,.?@;-]+$~",$string))? "***good!***" : "bad!";

see result of online demo @ bottom.

\w matches letters, digits , underscores, can rid of them in character class changing delimiter ~ allows utilize / slash without escaping (you need escape delimiters)

php regex