Rule validation for string length in Laravel-CodePudding

I need to validate a string whose length is exactly 6 OR 8. How could I make the rule for this validation?

The number must be 6 OR 8, it cannot be between 6 and 8.

CodePudding user response：

You need to create a custom rule.

In the sample below, I used the Closure to create a custom rule, but you can create a rule object to reuse it.

I used the mb_strlen instead of strlen to cover multibyte. (UTF8 chars)

use Illuminate\Support\Facades\Validator;
use \Illuminate\Http\Request;

Route::get('/test', function (Request $request) {
    $validator = Validator::make($request->all(), [
        'title' => [
            'required',
            function ($attribute, $value, $fail) {
                if (!(mb_strlen($value) == 8 || mb_strlen($value) == 6))
                {
                    $fail('The ' . $attribute . ' is invalid.');
                }
            },
        ],
    ]);

    dd($validator->errors());
});

CodePudding user response：

Try saving string length first and then check with if conditions.

$str = “hellowld”;
$len = strlen($str);
If($len == 6 || $len == 8)
    //do something 
Else
    //throw error

or use regex validation rule for length as:

 /^[68] $/

For string length.