CODEWITHSUNDEEP
php
holian
holian

Reputation: 755

Phone number validating in php

I would like to "validate" my posted phone number. I don't really care about the format, i just want to use only numbers and some chars. I tried this code, but if i type at least one number to my string then string will be valid. (for ex.: asdafadas-1asd will be valid) How to fix this?

$phonebool=true;
       if (!(strcspn($_POST['phone'], '0123456789-/ ') != strlen($_POST['phone']) )){
           $_SESSION['phone_err']='Only numbers and -/';
           $phonebool=false;
       }

thank you.

Upvotes: 1

Views: 16182

Answers (5)

Nirav Ranpara
Nirav Ranpara

Reputation: 13785

Working code

if (!(preg_match("([0-9-]+)", $_POST['phone']) != strlen($_POST['phone']) )){
    $_SESSION['phone_err']='Only numbers and -/';
    $phonebool=false;
}

Upvotes: 1

pouer
pouer

Reputation: 61

You should use a regular expression instead, something like:

/^[0-9\/-]+$/

Otherwise have a look at libphonenumber - it seems that a php port exists: https://github.com/davideme/libphonenumber-for-PHP

Examples:

var_dump(preg_match('/^[0-9\/-]+$/', 'asdafadas-1asd'));
=> int(0)

var_dump(preg_match('/^[0-9\/-]+$/', '12/34-56'));
=> int(1)

Upvotes: 3

ConnorRoberts
ConnorRoberts

Reputation: 91

Try this:

$phonebool=true;
if (!(preg_match("([0-9-]+)", $_POST['phone']) != strlen($_POST['phone']) )){
    $_SESSION['phone_err']='Only numbers and -/';
    $phonebool=false;
}

Upvotes: 0

luchosrock
luchosrock

Reputation: 708

one recommendation: use javascript/jquery to validate your forms, so the users can correct right away before submit.

Upvotes: 0

Nirav Ranpara
Nirav Ranpara

Reputation: 13785

Try This .

if(ereg("^[0-9]{3}-[0-9]{3}-[0-9]{4}$", $number) ) {
    echo "works";
} else {
    $errmsg = 'Please enter your valid phone number';
}

Upvotes: 2

Related Questions