preg_match(): No ending delimiter '/' found Laravel - php

Question

I'm doing a validation by regex from a request, this validation is to check that the parameter that is sent is an IP.
My rules are as follows:
<?php
namespace App\Http\Requests\usuarios;
use Illuminate\Foundation\Http\FormRequest;
class storeVPN extends FormRequest
{
/**
* Determine if the user is authorized to make this request.
*
* #return bool
*/
public function authorize()
{
return true;
}
/**
* Get the validation rules that apply to the request.
*
* #return array
*/
public function rules()
{
return [
'segmentwan' => 'regex:/^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$/',
'segmentlan' => 'regex:/^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$/',
];
}
the debugger shows me that the error is in this line
the debugger shows me that the error is in this line
return preg_match($parameters[0], $value) > 0;
y el error completo es el siguiente
* #return bool
*/
public function validateRegex($attribute, $value, $parameters)
{
if (! is_string($value) && ! is_numeric($value)) {
return false;
}
$this->requireParameterCount(1, $parameters, 'regex');
return preg_match($parameters[0], $value) > 0;
}
/**
* Validate that a required attribute exists.
*
* #param string $attribute
* #param mixed $value
* #return bool
*/
public function validateRequired($attribute, $value)
{
if (is_null($value)) {
return false;
} elseif (is_string($value) && trim($value) === '') {
return false;
} elseif ((is_array($value) || $value instanceof Countable) && count($value) < 1) {
return false;
} elseif ($value instanceof File) {
return (string) $value->getPath() !== '';
}

Answer 1

In Laravel you have ip validation rule so you can use:
return [
'segmentwan' => 'ip',
'segmentlan' => 'ip',
];
Also to be honest when I'm looking at your code I don't see the error. Are you sure error is with those 2 regexes?

Answer 2

Change your Validation rules. When you are using regex you need to use Array instead of pipe delimiter.
return [
'segmentwan' => [ 'regex:/^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$/'],
'segmentlan' => [ 'regex:/^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$/'],
];
Note: When using the regex pattern, it may be necessary to specify
rules in an array instead of using pipe delimiters, especially if the
regular expression contains a pipe character.
UPDATE
If you are validating IP address than laravel provides three validation options.
ip:
The field under validation must be an IP address.
ipv4:
The field under validation must be an IPv4 address.
ipv6:
The field under validation must be an IPv6 address.

Answer 3

You shouldn't be using regex to validate IPs; you can use filter_var() built-in function instead
It has many flags including FILTER_FLAG_IPV4 for ipv4 & FILTER_FLAG_IPV6 for ipv6 ... Ofcourse you can mix flags so you are able to check both