Laravel（4.2）形式：文本问题：htmlentities（）期望参数1为字符串

Question

I've got a view in my Laravel app (4.2) that is for editing a database record.

I'm storing two values - colour and heading - as arrays using the form::text method:

@foreach($colours as $key => $value)
    {{ Form::label('heading_' . $key,'Heading ' . ($key + 1)) }}                            
    {{ Form::text('heading[]', '', ['id' => 'heading_' . $key, 'class' => 'u-full-width']) }}
    {{ Form::label('colour_' . $key,'Colour ' . ($key + 1)) }}
    {{ Form::text('colour[]', $value, ['id' => 'colour_' . $key, 'class' => 'u-full-width']) }}
@endforeach

The initial edit form is fine but if I experience an issue (for example a field being empty) when I return to the original view (through our controller) it throws the following error:

htmlentities() expects parameter 1 to be string, array given

Bizarrely, it works fine for the colour[] fields but seems to be throwing an error for the heading[] fields.

Any thoughts on why this might be happening?

Cheers

Cole

Answer 1

You get the error htmlentities() expects parameter 1 to be a string, array given because the [] appended to heading and colour make them an array in HTML and when POSTed.

You're better off doing something like this (in PHP, in your controller, when you submit):

$colourArray = [];

foreach(Input::get('colours') as $colour) {
    array_push($colourArray, htmlentities($colour));
}

Then you'll have stripped colours in the $colourArray.

I haven't actually tested this, but I hope it makes sense.