Laravel: Validate maximum File size?

Question

I'm trying to validate on a max file size of 500kb in Laravel:

$validator = Validator::make($request->all(), [
    'file' => 'size:500',
]);

But this says that the file should be exactly 500kb big. How can I edit this rule so that it returns an error when it's bigger than 500kb?

Ive tried this:

'file' => 'size:>=500'
'file'  => 'size:max:500'

The documentation says nothing about this:

size:value

The field under validation must have a size matching the given value. For string data, the value corresponds to the number of characters. For numeric data, the value corresponds to a given integer value. For files, size corresponds to the file size in kilobytes.

use **file' => 'size:500' ** . i.e. file size not greater than 500kb — Yasin Patel
– Yasin Patel, Commented May 25, 2016 at 9:25
@YasinPatel you're wrong, the size validation is the exactly value — Filip Koblański
– Filip Koblański, Commented May 25, 2016 at 9:29

Top-Master · Accepted Answer · 2023-04-19 13:25:22Z

179

According to the documentation:

$validator = Validator::make($request->all(), [
    'file' => 'max:500000',
]);

The value is in kilobytes, for example:

max:10240 = max 10 MB.
max:1 = max 1024 bytes.

Note that there are efforts to change the value of 1 kilobytes from original 1024 to 1000 bytes, but major frameworks like Laravel remain using original 1024 value, which prevents confusion of senior developers (which are used to 1024).

edited Apr 19, 2023 at 13:25

Top-Master

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answered May 25, 2016 at 9:27

Filip Koblański

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3 Comments

Kamlesh Over a year ago

This solution did not work for me. System uploaded 6.5 MB image. Code is $validator = Validator::make($request->all(), [ 'profile_image'=>'mimes:jpeg,jpg,png|max:2000' ]);

Felix Dransfeld Over a year ago

could you add a link to the documentation? wasn't able to find it

JVE999 Over a year ago

It's alluded to by the max attribute documentation, laravel.com/docs/8.x/validation#rule-max, stating that it functions the same way as size, and the size documentation: laravel.com/docs/8.x/validation#rule-size, which states its in kilobytes.

NULL pointer · Accepted Answer · 2019-02-25 23:49:40Z

Edit: Warning! This answer worked on my XAMPP OsX environment, but when I deployed it to AWS EC2 it did NOT prevent the upload attempt.

I was tempted to delete this answer as it is WRONG But instead I will explain what tripped me up

My file upload field is named 'upload' so I was getting "The upload failed to upload.". This message comes from this line in validation.php:

in resources/lang/en/validaton.php:

'uploaded' => 'The :attribute failed to upload.',

And this is the message displayed when the file is larger than the limit set by PHP.

I want to over-ride this message, which you normally can do by passing a third parameter $messages array to Validator::make() method.

However I can't do that as I am calling the POST from a React Component, which renders the form containing the csrf field and the upload field.

So instead, as a super-dodgy-hack, I chose to get into my view that displays the messages and replace that specific message with my friendly 'file too large' message.

Here is what works if the file to smaller than the PHP file size limit:

In case anyone else is using Laravel FormRequest class, here is what worked for me on Laravel 5.7:

This is how I set a custom error message and maximum file size:

I have an input field <input type="file" name="upload">. Note the CSRF token is required also in the form (google laravel csrf_field for what this means).

<?php
namespace App\Http\Requests;
use Illuminate\Foundation\Http\FormRequest;
class Upload extends FormRequest
{
  ...
  ...
  public function rules() {
    return [
      'upload' => 'required|file|max:8192',
    ];
  }
  public function messages()
  {
    return [            
      'upload.required' => "You must use the 'Choose file' button to select which file you wish to upload",
      'upload.max' => "Maximum file size to upload is 8MB (8192 KB). If you are uploading a photo, try to reduce its resolution to make it under 8MB"
    ];
  }
}

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