How to print associative array using for construct , and without array_keys function ?

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print associative array using for construct ,
and without array_keys function ?

What I have tried:

PHP

$arr = array(
 
"Italy"=>"Rome", "Luxembourg"=>"Luxembourg", "Belgium"=> "Brussels", "Denmark"=>"Copenhagen", "Finland"=>"Helsinki", "France" => "Paris", "Slovakia"=>"Bratislava", "Slovenia"=>"Ljubljana", "Germany" => "Berlin", "Greece" => "Athens", "Ireland"=>"Dublin", "Netherlands"=>"Amsterdam", "Portugal"=>"Lisbon", "Spain"=>"Madrid", "Sweden"=>"Stockholm", "United Kingdom"=>"London", "Cyprus"=>"Nicosia", "Lithuania"=>"Vilnius", "Czech Republic"=>"Prague", "Estonia"=>"Tallin", "Hungary"=>"Budapest", "Latvia"=>"Riga", "Malta"=>"Valetta", "Austria" => "Vienna", "Poland"=>"Warsaw"

);
    

$c = count($arr);
    

    for ($i = 1; $i < $c; $i++) {
        echo $i . "  :  " . $arr[$i];
    }

Posted 9-Oct-23 22:49pm

user6question

Updated 9-Oct-23 22:58pm

OriginalGriff

v2

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Chris Copeland · Answer 1 · 2023-10-09T23:25:00

Solution 1

Should be as simple as:

PHP

<?php

foreach ($arr as $key => $value) {
  echo $key.' has the capital '.$value;
}

Posted 9-Oct-23 23:25pm

Chris Copeland

Comments

user6question 10-Oct-23 8:15am

it works ,

but, for cannot do it ?

Chris Copeland 10-Oct-23 9:16am

Well yes you could use array_keys() to get the keys of the array and then iterate over them using a for() loop, but you've already said you don't want to do that. The way I've suggested is probably the easiest solution, why can you not use foreach() instead?

user6question 11-Oct-23 3:37am

for large data , to avoid another array which array_keys() gives ,

Chris Copeland 11-Oct-23 8:19am

I probably wouldn't worry about it too much to be honest, the keys of an array are likely to be significantly smaller than than the actual values. And to be honest using foreach() is probably more cost-effective anyway, so I'd focus on using that instead.