Laravel Collections Using Contains to check if a collection satisfies certain condition


Example

A common problem is having a collection of items that all need to meet a certain criteria. In the example below we have collected two items for a diet plan and we want to check that the diet doesn't contain any unhealthy food.

// First we create a collection
$diet = collect([
    ['name' => 'Banana', 'calories' => '89'],
    ['name' => 'Chocolate', 'calories' => '546']
]);

// Then we check the collection for items with more than 100 calories
$isUnhealthy = $diet->contains(function ($i, $snack) {
    return $snack["calories"] >= 100;
});

In the above case the $isUnhealthy variable will be set to true as Chocolate meets the condition, and the diet is thus unhealthy.