php 如何在 Laravel Eloquent Collection 的 each 方法中使用 break 或 continue？
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How to use break or continue with Laravel Eloquent Collection's each method?
提问by Nasif Md. Tanjim
How to use break or continue with Laravel Eloquent Collection's each method. My code is this:
如何在 Laravel Eloquent Collection 的 each 方法中使用 break 或 continue。我的代码是这样的：
$objectives->each(function($objective) {
Collection::make($objective)->each(function($action) {
Collection::make($action)->each(function($success_indicator) {
Collection::make($success_indicator)->each(function($success_indicator) {
echo 'hi';
continue;
});
});
});
});
回答by vijaykumar
We can return true/falsetruefor continue, falsefor break
我们可以返回真/假true的continue，false对break
Continue:
继续：
collect([1,2,3,4])->each(function ($item){
if ($item === 2) {
return true;
}
echo $item;
});
Output:1 3 4
输出：1 3 4
Break:
休息：
collect([1,2,3,4])->each(function ($item){
if ($item === 2) {
return false;
}
echo $item;
});
Output:1
输出：1
回答by Joseph Silber
To continue, just returnout of the inner function. To break, well..
To continue，刚出return内部函数。为了break，嗯..
If you're using Laravel 5.1+, you can return falseto break the loop:
如果你使用的是 Laravel 5.1+，你可以返回false来打破循环：
$objectives->each(function($objective) {
collect($objective)->each(function($action) {
collect($action)->each(function($success_indicator) {
collect($success_indicator)->each(function($success_indicator) {
if ($condition) return false;
});
});
});
});
For older version of Laravel, use a regular foreachloop:
对于旧版本的 Laravel，请使用常规foreach循环：
$objectives->each(function($objective) {
foreach ($objective as $action) {
foreach ($action as $success_indicators) {
foreach ($success_indicators as $success_indicator) {
echo 'hi';
break;
}
}
}
});
