How can I able to see only one array elements in multidimensional array using foreach() loop in Php?

Question

Hello guys, I am learning php. I have learned about foreach loop that is only for array. Now I am little bit confused how can I only see the asia array elements? I have tried
foreach ($continents as $subcontinents){
print $subcontinents[0].'<br/>';
}
this one but it is getting the first element of every array.
Thanks in advance.
https://code.sololearn.com/wyrWNTYJ26wN/?ref=app

Answer 1

Try this:

echo implode(', ', $continents["Asia"]);

Answer 2

To be honest, I'm not particularly au fait with PHP, but it makes sense to me that the foreach loop iterates over the associated array (in your case $continents) and takes the value (of each key) each time. So on the first iteration, $subcontinents takes on the value of your "Asia" array (i.e. ("Bangladesh", "India", "Pakistan")), then the "Europe" array second time around and the "Africa" array last.

Where you had $suncontinents[0] within the loop, this printed the first element of the array each time around.

$continents[0] would not return the array set as "Asia", even though it was the first key: value pair listed, because there is no inherent order with an associated array. You would retrieve the "Asia" array using $continents["Asia"].

Unfortunately, simply using the statement

echo $continents["Asia"];

would not print the array as required and it needs the implode() method for it to be printed as you need.

Hope that makes sense to you.

Answer 3

Thanks, Russ. It's working. But would you please explain in short how it works? It will be great for me as I am a beginner.

Answer 4

thank u dear. I got it.