Php array get all values that are repeating - php

Question

I have a Php array that have values of times as array values and timestamps as key array is like this:
array(
144454884=>"12:00am", 145454884=>"12:30am", 144474884=>"1:00am", 144454864=>"1:30am", 143354884=>"1:00am", 144654884=>"1:30am", 1444567584=>"2:00am "
);
Timestamp values in above example are not real I wrote an example they are useless anyway unless your timezone matches mine.
Problem:
I need to get "1:00am" and "1:30am" twice I can get repeating values 1 time as shown in answer here:
php return only duplicated entries from an array
I need both repeating values two times with both keys and values being repeated because I need to eliminate those timestamps from week time on my system because of daylight saving a time is repeating and I don't want to show 1:00am at all I just want to show this time as unavailable.

Answer 1

I am not 100% sure what you wanted but this is what I think you need.
Assuming your input array is called $a
$b = array_flip(array_flip($a));
$c = array_diff_key($a, $b);
$b will contain an array of unique values.
$c will contain the elements that were removed.
Results of $b and $c are as follows:
array(5) {
[144454884] = string(7) "12:00am"
[145454884] = string(7) "12:30am"
[143354884] = string(6) "1:00am"
[144654884] = string(6) "1:30am"
[1444567584] = string(7) "2:00am "
}
array(2) {
[144474884] = string(6) "1:00am"
[144454864] = string(6) "1:30am"
}

Answer 2

This code works :
<?php
$array_new = [];
$array_tmp = [];
$array = array(1=>'1233',2=>'12334',3 =>'Hello' ,4=>'hello', 5=>'U');
//loop trough all elements in array and for ever element create key
//For "world" key is "world"
//For "World" key is "world"
//For "WORLD" key is "world"
//So all this cases have same key and differenet representation eg. "world" => ["world","World","WORLD"]
foreach($array as $k => $v){
$index = strtolower($v);
$array_tmp[$index][] = $v;
}
//loop trough new array with new keys and if there are more than one element(> 1) for some key, all of his representations put in new array
foreach($array_tmp as $k => $v){
if(count($v) > 1){
foreach($v as $k2 => $v2){
$array_new[] = $v2;
}
}
}
echo '<pre>';
print_r($array_new);
echo '<pre>';

Answer 3

A possible solution keeping the key information (I will assign the intermediate results to their own variables otherwise it can be confusing to read)
$array = array(
143354883 => "1:00am",
144454884 => "12:00am",
145454884 => "12:30am",
144474884 => "1:00am",
144454864 => "1:30am",
143354884 => "1:00am",
144654884 => "1:30am",
1444567584 => "2:00am ",
0 => 4,
1 => 4,
2 => 4,
3 => "Test",
4 => "TEST",
5 => "test "
);
// Used this array_iunique function: http://stackoverflow.com/questions/2276349/case-insensitive-array-unique
function array_iunique($array) {
return array_intersect_key(
$array,
array_unique(array_map("StrToLower",$array))
);
}
$unique = array_iunique($array);
// Then get the difference by key, that will give you all the duplicate values:
$diff_key = array_diff_key($array, $unique);
// Now we have to find the values that are in the $diff_key and the $unique because we also want to have those:
$correspondingValues = array_uintersect($unique, $diff_key, "strcasecmp");
// Then we have to combine the $duplicate values with the $diff_key and preserve the keys:
$result = array_replace($correspondingValues, $diff_key);
var_dump($result);
Will result in:
array(10) {
[143354883]=>
string(6) "1:00am"
[144454864]=>
string(6) "1:30am"
[0]=>
int(4)
[3]=>
string(4) "Test"
[144474884]=>
string(6) "1:00am"
[143354884]=>
string(6) "1:00am"
[144654884]=>
string(6) "1:30am"
[1]=>
int(4)
[2]=>
int(4)
[4]=>
string(4) "TEST"
}