Show only unique values from Array - php

Question

I have the following array in php:
array(12) {
[0]=>
array(2) {
["adress"]=>
string(17) "Kungsvägen 118 A "
["dob"]=>
string(10) "1969-06-17"
}
[1]=>
array(2) {
["adress"]=>
string(14) "Skolgatan 1 B "
["dob"]=>
string(10) "1969-06-17"
}
[2]=>
array(2) {
["adress"]=>
string(14) "Skolgatan 1 B "
["dob"]=>
string(10) "1980-05-22"
}
[3]=>
array(2) {
["adress"]=>
string(12) "Myntvägen 8 "
["dob"]=>
string(10) "1980-05-22"
}
[4]=>
array(2) {
["adress"]=>
string(14) "Skolgatan 1 B "
["dob"]=>
string(10) "1993-05-09"
}
[5]=>
array(2) {
["adress"]=>
string(14) "Skolgatan 1 B "
["dob"]=>
string(10) "1989-06-28"
}
[6]=>
array(2) {
["adress"]=>
string(14) "Skolgatan 1 B "
["dob"]=>
string(10) "1991-03-17"
}
[7]=>
array(2) {
["adress"]=>
string(14) "Skolgatan 1 B "
["dob"]=>
string(10) "1989-10-30"
}
[8]=>
array(2) {
["adress"]=>
string(23) "Gasslanda VÄSTERGÅRD 2 "
["dob"]=>
string(10) "1980-10-30"
}
[9]=>
array(2) {
["adress"]=>
string(14) "Skolgatan 1 B "
["dob"]=>
string(10) "1980-10-30"
}
[10]=>
array(2) {
["adress"]=>
string(14) "Skolgatan 1 B "
["dob"]=>
string(10) "1990-05-01"
}
[11]=>
array(2) {
["adress"]=>
string(11) "Ågatan 6 A "
["dob"]=>
string(10) "1990-05-01"
}
}
I want to print out the unique adress-values in this array when I'm doing an foreach. As you can see, Skolgatan 1 B appears several times in the array, so I want to print it out just once in my loop. How can I do this? I have tried
array_unique([$newArray['adress']);
but that does not work.

Answer 1

$unique = array();
foreach($array as $item)
$unique[$item['adress']] = $item;
Then use $unique

Answer 2

Something like this should work:
$printed_vals = array();
foreach ($array as $item) {
if (!in_array($item['adress'], $printed_vals)) {
print_r($item);
$printed_vals[] = $item['adress'];
}
}

Answer 3

This is how I would have solved this problem. Hope it helps.
$non_duplicates = array();
$i=0;
foreach( $addresses AS $address ){
if( !in_array( $address['adress'], $non_duplicates ) ){
// Use one of the below array_push statements
array_push( $non_duplicates, $i ); // if you want to get the array key position
array_push( $non_duplicates, $address['adress'] ); // if you only want a new array of unique addresses
}
$i++;
}
If you have chosen to only return key positions to $non_duplicates yo can then retrieve your unique positions from you array by:
foreach( $non_duplicates AS $key ){
echo $addresses[$key];
}

Answer 4

I guess you want to print address once but dob in multiple times.. in that case you can do something like followings
$printed_vals = array();
foreach ($array as $item) {
$printed_vals[$item['adress']][] = $item['dob'];
}
foreach ($printed_vals as $address => $values) {
echo $address . " => " . implode(",", $values);
}