Collections

Question 1

Collect Method Map method

Answer 1

$array =["john","cathy","mery"];
   $collections = collect($array);
   $result = $collections->map(function ($value){
       return strtoupper($value);
   });
output :["JOHN","CATHY"...]
                        OR

$result = collect($array)->map(function ($value){
        return strtoupper($value);
    });
   echo $result;

Question 2

Reject method

Answer 2

$array =[20,30,50];
    $result = collect($array)->reject(function($value){
        return $value>30;
    });
    echo $result;

output : 20,30

Question 3

contains method

Answer 3

$array =[20,30,50];
    $result = collect($array)->contains(function($value,$key){
      return $value==30;
    });
    echo $result;

output:1 (means true)

Question 4

looping array

Answer 4

$array =[20,30,50];
    $result = collect($array)->each(function($value,$key){
      return $value;
    });
    echo $result;

Question 5

filter method

Answer 5

$array =[20,30,50];
    $result = collect($array)->filter(function($value,$key){
        return $value<50;
    });
    echo $result;

output 20,30