Use of pattern attribute in HTML input

Question

I have this example for pattern in HTML pattern="[a-zA-Z0-9-_. ]{1,30}". This means that only letters numbers and -_. are allowed, but I want to make a pattern like in the preg_replace which allows everything but not [ <>/\:*?"|].

So how can I go with this?

AdamM · Answer 1 · 2013-04-24T13:58:48.030

1

You can try the following:

$test = "Hello [<>/\:*?\"|Mister] Jean-Samuels, how are you?_.";
echo preg_replace('/[^\d\w-_. ]+/', '', $test);

Output:

Hello Mister Jean-Samuels how are you_.

Edit:

Here is a JSFiddle of your HTML Pattern.

HTML:

<input title='Enter anything but <, >, /, \, :, *, ?, ", |' 
type='text' 
pattern='[^<>\/\\:*?"|]{1,30}' required />

edited Apr 24 '13 at 13:58

answered Apr 23 '13 at 18:22

AdamM

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HI everyone, tahnks for the answers but i'm not talking about a regex in php code i'm talking about putting a regex in the HTML pattern i tried before to use the char ^ to exclue some letters but it didint worked in HTML pattern ... – user2303038 Apr 24 '13 at 11:42

Vivin Paliath · Answer 2 · 2013-04-23T18:34:56.353

0

The ^ operator in a character class will negate the entire class, so you can use:

[^<>/\:*?"|]

Which will match everything except those characters inside the character class. Keep in mind that you might have to escape the " if the surrounding quotes for the pattern attribute are " as well.

edited Apr 23 '13 at 18:34

answered Apr 23 '13 at 18:23

Vivin Paliath

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I thought that some of this characters have to be escaped to got them to work. – Hexodus Apr 23 '13 at 18:32
@Hexodus deoends on the context, really. But yes the `"` will probably need to be escaped. If the surrounding quotes are `"`. – Vivin Paliath Apr 23 '13 at 18:34

score 0 · Answer 3 · answered Apr 23 '13 at 18:23

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Negative character classes in regex are done like this: [^characters to exclude]

Note the ^ just inside the [, that's what makes it a negative.

That said, you should probably stick with what you have, otherwise you'll get someone like me trying to enter ヴィックサ for a name :p

answered Apr 23 '13 at 18:23

Niet the Dark Absol

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But what if my name is ヴィックサ? :( (It isn't) – Vivin Paliath Apr 23 '13 at 18:24

Use of pattern attribute in HTML input

3 Answers3