Can't get rid of /r/n

Question

I explored all the previous questions and solutions, nut none of them works in my situation.

I have an input text area where accepts employee ids. End users could use comma , enter, space to separate multiple employee ids, and I need to change any separation into commas.

This is my code:

$emplids = preg_replace('/[,\t\n\r\s]+/',",",$emplids);

And then, I need to only keep the numbers and commas:

$emplids = preg_replace("/[^X0-9,]/", "", $emplids);

And then I need to store them into anarray:

$emplids = explode(",", $emplids);

Now only the end users put comma among employee ids could work, line breaks could not work.

I tried double quotas:

$emplids = preg_replace("/[,\t\n\r\s]+/",",",$emplids);

It doesn't work neither.

It seems like a tiny question, but it really takes me hours. And any hints is highly appreciated!

possible duplicate of [Replacing \r\n with PHP](http://stackoverflow.com/questions/5449580/replacing-r-n-with-php) — Jay Blanchard, Jul 14 '15 at 18:15
light, I tried preg_replace("/[,\r\n]+/",",",$emplids) just now. It dosn't work. — user5004724, Jul 14 '15 at 18:22
don't very understand, but trim only removes side characters, right? I need to remove inside ones. — user5004724, Jul 14 '15 at 18:23

score 0 · Answer 1 · answered Jul 14 '15 at 18:28

0

Or you can just get all the ids with the rule that one id can only contain digits, nothing else.

$input = <<<EOF
123 356 353,255
2424,535 35
EOF;

preg_match_all('/(\d+)/',$input, $matches);
print_r($matches[1]);

answered Jul 14 '15 at 18:28

Karl

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Thank you so much! I will have a try. – user5004724 Jul 14 '15 at 18:41

score 0 · Answer 2 · answered Jul 14 '15 at 18:28

0

Putting this here since it'd be ugly in a comment:

php > $x = '\n'; // single quotes
php > $y = "\n"; // double quotes
php > var_dump($x, $y);
string(2) "\n"
string(1) "
"

Note the difference in quoting styles, and the quotes' effect on what PHP sees as being in the string: '-quoted strings do not understand any \ escapes, EXCEPT for \' and \\. Any other escaped char in a '-quoted string is simply a backslash followed by that character.

answered Jul 14 '15 at 18:28

Marc B

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Thank you! I changed it to preg_replace('/[,\\r\\n]+/',",",$emplids) . No working. – user5004724 Jul 14 '15 at 18:34
preg_replace("/[,\r\n]+/",",",$emplids) . NO working neither. :-( Trying others... – user5004724 Jul 14 '15 at 18:38
I really realize it is the quoting issue. Thank you so much! Will report any progress. – user5004724 Jul 14 '15 at 18:40
you need to show an example of your input text. we can't help with a regex unless we know what it's going to be applied to. – Marc B Jul 14 '15 at 18:41
change \ to \' with ' ', and it works! Other ways don't work. :-) Thank you Marc B! I should have included the input examples. It is 12345/r/n67890 – user5004724 Jul 14 '15 at 18:58
I mean, change \ to \' within ' ' :-) – user5004724 Jul 14 '15 at 19:07

score 0 · Answer 3 · answered Jul 14 '15 at 19:25

Finally found out the real reason.

I included a script where uses clean function:

if($_POST) {
        $_POST = clean($_POST);
        echo "<pre>" . print_r($_POST,1) . "</pre>";

    }

And in my script, $emplids = $_POST['emplids']; ..... $emplids = explode(",",preg_replace("/[^X0-9,]/", "", preg_replace('/[,\t\n]+/',",",$emplids)));

If remove the clean function, the single ' ' and / within them work well together!

Can't get rid of /r/n

3 Answers3