How to remove duplicated value with special character from array in php

Question

Here I have this array:

  $myArray =  array(5) { 
[0]=> string(62) "  läs våra leveransvillkor/reservationer " 
[1]=> string(61) " läs våra leveransvillkor/reservationer " 
[2]=> string(60) " läs våra leveransvillkor/reservationer" 
[3]=> string(107) "om skorstenen bryter nock, ränndal, bjälke, el, vent etc tillkommer kostnad för vinklar eller avväxling" 
[4]=> string(59) "läs våra leveransvillkor/reservationer"
 }

Here, four values are the same. So I want to keep only one. I did try to use array_unique , and even I did try this:

array_map("unserialize", array_unique(array_map("serialize", $myArray)));

But I was not succeed in removing duplicates. I guess the issue is because of the special character.

Answer 1

Your var_dump exposes that you have non-printable characters in your strings.

You will need to prepare your data by removing non-printable characters. If you are in UTF-8, this should do...

$myArray = preg_replace('/[\x00-\x1F\x7F]/u', '', $myArray);

Then you will be able to use:

$myArray = array_unique($myArray);

Or of course, combine them into one line:

$myArray = array_unique(preg_replace('/[\x00-\x1F\x7F]/u', '', $myArray));

---

If you say there is merely leading and trailing whitespace to mop up, then this will do.

Code: ( Demo )

$myArray = [
"  läs våra leveransvillkor/reservationer ", 
" läs våra leveransvillkor/reservationer ", 
" läs våra leveransvillkor/reservationer",
"om skorstenen bryter nock, ränndal, bjälke, el, vent etc tillkommer kostnad för vinklar eller avväxling", 
"läs våra leveransvillkor/reservationer"
];

var_export(array_unique(array_map('trim', $myArray)));

Answer 2

it is work with array_unique

 $myArray =  array( 
'0'=> "läs våra leveransvillkor/reservationer",
'1'=>  "läs våra leveransvillkor/reservationer",
'2'=> "läs våra leveransvillkor/reservationer",
'3'=>  "om skorstenen bryter nock, ränndal, bjälke, el, vent etc tillkommer kostnad för vinklar eller avväxling" ,
'4'=>  "läs våra leveransvillkor/reservationer",
);


$result = array_unique($myArray);
print_r($result);

DEMO