如何打印出PHP数组的唯一值？

Question

Details

• I have a list of my country in an array called $country

• When I do dd($country); I see this

  

• I want to print out all country name of that array ( unique value only )

• can someone show me how to print that ?

Here is what I've tried

I tried echo (array_unique(array_values($country)));

But I got an error

ErrorException (E_UNKNOWN) 
Array to string conversion

Answer 1

You can't echo an array. It's not a string.

// There's no need to use array_values
$uniqueValues = array_unique($continent);

foreach($uniqueValues as $country){
    echo $country, '<br>';
}

Answer 2

Since I have my array from $countries[$k] = $v['hq_country']['name'];

Printing them out, I just need to do this

foreach(array_unique($countries) as $country){ 

echo $country ;

}