How to get first values of array?

Question

I have this array:

$predmeti = [
 'slo' => 'slovenščina',
 'mat' => 'matematika',
 'ang' => 'angleščina',
 'fot' => 'fotografija',
 'tir' => 'tipografija in reprodukcija',
 'tirv' => 'tipografija in reprodukcija vaje',
 'gob' => 'grafično oblikovanje',
 'mob' => 'medijsko oblikovanje',
];

Somewhere in code I want to get all first values of this array (slo, mat, ang...) How do I achive that?

I need to pass all the values in foreach statment after getting all first values.

Answer 1

What you call the "first value" is the "key". You can use array_keys to get an array of all the keys from the first array:

$keys = array_keys($predmeti);
foreach ($keys as $key) {
 // ... do something with the $key ...
}

But since you're using a foreach loop anyway, you can iterate the keys and values of the array together, and just ignore the $value variable:

foreach ($predmeti as $key => $value) {
 // ... do something with the $key ...
}

Answer 2

The "first values" you are talking about are the keys, the "second values" are the actual values. Try:

foreach ($predmeti as $key => $value) {
 print "key: $key, value: $value\n";
}

That should print

key: slo, value: slovenščina
key: mat, value: matematika
...