php - how to make an input date field greater than or equal to another date field using validation in laravel -

hi iam developing application using laravel there way make input date field greater or equal date field using validation.

i know can achieve through jquery , have got working, want know whether achievable through laravel validation since laravel has got predefined validations.

for example

protected $validationrules = array     (          'a' => 'date',       'b' => 'date|(some validation b value greater or equal of 'a')'     ); 

edit

if there other approach solve problem using laravel concept please tell me

i tried

validator::extend('val_date', function ($attribute,$value,$parameters) {     return preg_match("between [start date] , dateadd("d", 1, [end date])",$value); }); 

thanks in advance

i had same problem. before , after not work when dates same. here short solution:

// 5.1 or newer validator::extend('before_or_equal', function($attribute, $value, $parameters, $validator) {     return strtotime($validator->getdata()[$parameters[0]]) >= strtotime($value); });  // 5.0 & 4.2 validator::extend('before_or_equal', function($attribute, $value, $parameters) {     return strtotime(input::get($parameters[0])) >= strtotime($value); }); 

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$rules = array(     'start'=>'required|date|before_or_equal:stop',     'stop'=>'required|date', ); 

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edit: laravel 5.3.25 , later have new built in rules: before_or_equal , after_or_equal