Laravel Collections | Checking Array Collection Using Contains

Hello Artisan

In this tutorial i will show you how we can use contains collection method in laravel. The contains() method determines whether the collection contains a given item. If contains then it returns true otherwise false.

The contains() method uses "loose" comparisons when checking item values, meaning a string with an integer value will be considered equal to an integer of the same value. So let's see how to check an array items using contains. 

Example 1 : contains()

See the first example of laravel contains method

Route::get('/', function () {

 return collect(['hello'])->contains('hello');

});
output
True

If we run this code the output will be true cause the collection contains hello. 

Route::get('/', function () {

 return collect(['hello'])->contains('hi');

});
output
False

If we run this code then the output will be false. Cause contains method doesn't determines the collection contains that given item.

 

Example 2 : contains()

Route::get('/', function () {

  return collect(['key' => 'value'])->contains('value');

});
output
True

If we run this code the output will be true cause the collection contains value.  So we can pass key also in collection arrays.

 

Example 3 : contains()

We can slo check by the following manner

Route::get('/', function () {

  return collect([
    ['key' => 'value']
  ])->contains('key','value');

});
output
True

 

Example 4 : contains()

Check a little bit more advance example. Have a look 

Route::get('/', function () {

 return collect([1,2,3,4])->contains(function($value,$key){
    return $value > 3;
 });

});
output
True

 

Here $value is checking from collection that whether 1 is greater than 3 or not, is greater than 3 or not, 3 is greater than 3 or not, 4 is greater than 3 or not, If greater then the whole item will return true. If the one condition is true there will be whole item true. Hope it can help you.

 

A web enthusiastic, self-motivated Full-Stack Web Developer from Dhaka, Bangladesh with experience in developing applications using JavaScript, Laravel & Wordpress specifically. Facebook Github Website