how to check image dimensions before upload in laravel 4

问题

I am new in laravel 4.

I want to upload photo with maximum dimensions 800x600.

Please help to guide me!

回答1:

you could simple use getImageSize(), as

list($width, $height) = getimagesize(Input::file('file'));

回答2:

Check validation like this

if ($validator->passes() && correct_size(Input::file('file'))) {
    // do something
}

Create a validation function like this in which ever model you choose

public function correct_size($photo) {
    $maxHeight = 100;
    $maxWidth = 100;
    list($width, $height) = getimagesize($photo);
    return ( ($width <= $maxWidth) && ($height <= $maxHeight) );
}

you can decide if you want to use it statically or not. But my recommendation is not defining it statically if you would like to check other uploads using the same validation without the dependency.

回答3:

Check like below in your form validation.

'avatar' => 'dimensions:min_width=100,min_height=200'

来源：https://stackoverflow.com/questions/27559393/how-to-check-image-dimensions-before-upload-in-laravel-4