<?php

$myArray = [
        "fname" => "Sudhir",
        "lname" => "Gour",
        "age" => 27,
        "city" => "Jaipur",
        "state" => "Jaipur",
        "country" => "India"
    ];
    
$myArrayTwo = array(
        "firstArray" => array(
            "FName" => "Sudhir",
            "firstLName" =>"Gour",
            "firstAge" => 32
            ),
        "secondArray" => array(
            "FName" => "Kartik",
            "secondLName" =>"Sharma",
            "secondAge" => 53
            ),
        "thirdArray" => array(
            "FName" => "Vishwas",
            "thirdLName" =>"Kumar",
            "thirdAge" => 76
            ),
    );
    
    
$arrayKeys = ["fname" , "lname" , "city" , "country"];
$arrayValues = ["Sudhir" , "Gour" , "Jaipur" , "India"];
$arrayNewKeys = [
        "first_name" => "Sudhir",
        "last_lname" => "Gour",
        "new_age" => 27,
        "city" => "Jaipur",
        "state" => "Jaipur",
        "country" => "India"
    ];
    
    // print_r(array_change_key_case($myArray));
    // print_r(array_chunk($myArray , 3));
    // print_r(array_column($myArrayTwo , "FName"));
    // print_r(array_combine($arrayKeys , $arrayValues));
    // print_r(array_count_values($arrayValues));
    // print_r(array_diff($arrayKeys , $arrayValues)); // returns the elements of first array that don't match in the other arrays.
    // print_r(array_fill(1, 10 , "banana"));
    // print_r(array_diff_key($myArray , $arrayNewKeys));
    // print_r(array_fill_keys($arrayKeys , "Mango"));
    print_r(count