CODEWITHSUNDEEP
phpjavascriptjqueryregex
RhymeGuy
RhymeGuy

Reputation: 2112

PHP/jQuery/Javascript - Allow only numbers and some characters in variable

I need to verify if user have entered desired characters in the input field and if he didn't, I need to format input like this:

Start variable: +42 88 66 44 3, +42 (4) 87/654321; +42 3 123456

Desired variable: +428866443, +42487654321, +423123456

So basically I need to clear out all characters from variable that are not numbers and allow only signs like + , ; -.

Because I'm using an AJAX request, I would appreciate code for both PHP and Javascript.

Upvotes: 0

Views: 581

Answers (1)

Glavić
Glavić

Reputation: 43552

For striping invalid chars from your string use regular expression in PHP and JAVASCRIPT.

PHP

$s = '+42 88 66 44 3, +42 (4) 87/654321; +42 3 123456';
$n = preg_replace('~[^\d\+,;-]~', '', $s);
print_r($n);

JAVASCRIPT

var s = '+42 88 66 44 3, +42 (4) 87/654321; +42 3 123456';
var n = s.replace(/[^\d\+,;-]/g, "");
console.log(n);

But better practice is that you show error, if user enters wrong format. You will need some validating to todo...

Upvotes: 3

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