<?php 
 
use mapache_commons\Collection; 
use mapache_commons\Debug; 
 
include "../lib/Collection.php"; 
include "../lib/Debug.php"; 
 
$countries=array("USA","Canada","Mexico","MapacheLand"); 
$countriesAssoc=array("First"=>"USA","Second"=>"Canada","Third"=>"Mexico","Fourth"=>"MapacheLand"); 
 
$countriesList=[]; 
$countriesList[]=['Country'=>"USA",'Population'=>300]; 
$countriesList[]=['Country'=>"Canada",'Population'=>50]; 
$countriesList[]=['Country'=>"Mexico",'Population'=>80]; 
 
$arrayComplex=array('Name'=>'John' 
        ,'Age'=>33 
        ,'Address'=>['Name'=>'MapacheLand','City'=>'Racoon City']); 
 
Debug::var_dump(Collection::first($countries)); 
Debug::var_dump(Collection::first($countriesAssoc)); 
Debug::var_dump(Collection::firstKey($countriesAssoc)); 
 
echo Collection::generateTable($countriesList); 
 
Debug::var_dump(Collection::arrayKeyLower($arrayComplex)); 
Debug::var_dump(Collection::arrayKeyUpper($arrayComplex));
 
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