php Laravel 检查数组是否为空
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Laravel Check if Array is empty
提问by Mamulasa
I am struggling with displaying some content depending on if an array property does have a value or not. If an article has a title, I want to display the content of the entire article, if not I want to show something else. However, it doesn't work. The code in the else statement is not executed.
我正在努力根据数组属性是否具有值来显示一些内容。如果一篇文章有标题，我想显示整篇文章的内容，否则我想显示其他内容。但是，它不起作用。else 语句中的代码不会被执行。
What's wrong here?
这里有什么问题？
My Code is:
我的代码是：
@foreach($restaurantmenue as $daily)
@foreach($daily->articles as $menue)
@if(!empty($menue->title))
<div class="card card-horizontal">
<div class="row">
<div class="col-md-5">
<div class="image" style="background-image: url({{asset('images/frontend/profile/profileHero.jpg')}}); background-size: cover; background-position: center center;">
<img src="{{asset('images/frontend/profile/profileHero.jpg')}}" alt="..." style="display: none;">
<div class="filter filter-azure">
<button type="button" class="btn btn-neutral btn-round">
<i class="fa fa-heart"></i> SM?CKT MIR
</button>
</div>
</div>
</div>
<div class="col-md-7">
<div class="content">
<p class="category text-info">
<i class="fa fa-trophy"></i> Best of
</p>
<a class="card-link" href="#">
<h4 class="title">{{$menue->title}} </h4>
</a>
<a class="card-link" href="#">
<p class="description">{{$menue->body}}</p>
<br />
{{$menue->price}}
</a>
<div class="footer">
<div class="stats">
<a class="card-link" href="#">
<i class="fa fa-male"></i> {{$restaurant->name}}
</a>
</div>
<div class="stats">
<a class="card-link" href="#">
<i class="fa fa-comments"></i> 23 Comments
</a>
</div>
<div class="stats">
<a class="card-link" href="#">
<i class="fa fa-heart"></i> 231 Likes
</a>
</div>
</div>
</div>
</div>
</div>
</div>
@else
No Articles for Today
@endif
@endforeach
@endforeach
回答by Kiran Subedi
If you are getting data using ORM in laravel like
如果您在 laravel 中使用 ORM 获取数据，例如
$data = \App\Model::get();
then you can check whether the $datais empty or not as following :
然后您可以检查是否$data为空，如下所示：
@if(!$data->isEmpty())
// $data is not empty
@else
// $data is empty
@endif
Reference: Check Here
参考：检查这里
But if you use findor findOrFail, then you can check array as
但是如果您使用findor findOrFail，那么您可以将数组检查为
$data = \App\Model::findOrFail($id);
@if(!empty($data))
// $data is not empty
@else
// $data is empty
@endif
回答by Mamulasa
Well, the code is executed if the article is not empty. But The code in the else statement is still not executed. I still can't display the "no article" message it there are no articles available
好吧，如果文章不为空，则执行代码。但是else语句中的代码还是没有执行。我仍然无法显示“没有文章”消息，因为没有可用文章
@if(!$restaurantmenue->isEmpty())
@foreach($restaurantmenue as $daily)
@foreach($daily->articles as $menue)
<div class="card card-horizontal">
<div class="row">
<div class="col-md-5">
<div class="image" style="background-image: url({{asset('images/frontend/profile/profileHero.jpg')}}); background-size: cover; background-position: center center;">
<img src="{{asset('images/frontend/profile/profileHero.jpg')}}" alt="..." style="display: none;">
<div class="filter filter-azure">
<button type="button" class="btn btn-neutral btn-round">
<i class="fa fa-heart"></i> SM?CKT MIR
</button>
</div>
</div>
</div>
<div class="col-md-7">
<div class="content">
<p class="category text-info">
<i class="fa fa-trophy"></i> Best of
</p>
<a class="card-link" href="#">
<h4 class="title">{{$menue->title}} </h4>
</a>
<a class="card-link" href="#">
<p class="description">{{$menue->body}}</p>
<br />
{{$menue->price}}
</a>
<div class="footer">
<div class="stats">
<a class="card-link" href="#">
<i class="fa fa-male"></i> {{$restaurant->name}}
</a>
</div>
<div class="stats">
<a class="card-link" href="#">
<i class="fa fa-comments"></i> 23 Comments
</a>
</div>
<div class="stats">
<a class="card-link" href="#">
<i class="fa fa-heart"></i> 231 Likes
</a>
</div>
</div>
</div>
</div>
</div>
</div>
@endforeach
@endforeach
@else
no article
@endif
回答by Terabyte
Hope this might help you.
希望这可以帮助你。
$processes = [1, 2, 4, 5];
$maintenance = [1, 2, 3, 4, 5];
$array_value = function ($value, $array) {
$str = "$value";
if (in_array($str, $array)) {
echo 5;
} else {
echo 1;
}
};
foreach ($maintenance as $m) {
$array_value ($m, $processes);
}
Basically I'm comparing two arrays and display 5 if data found on the other array
基本上我比较两个数组并显示 5 如果在另一个数组上找到数据
