How to check if all values ​​in an array are identical?

Question

In PHP, how can I quickly determine if all values ​​in an array are identical?

Answer 1

You can use the test:

count(array_unique($arr)) == 1; 

Alternatively, you can use the test:

 $arr === array_fill(0,count($arr),$arr[0]); 

Answer 2

 $results = array_unique($myArray); if(count($results) == 1){ // $myArray is all duplicates } 

Answer 3

You can also use this check:

 count(array_count_values($arr)) == 1 

Answer 4

Why not just iterate over this array?

Answer 5

 $myArray = array('1','1','1'); $results = array_unique($myArray); if(count($results) == 1) { echo"all value is duplicates"; } else { echo"all value is not duplicates"; } 

Answer 6

Carry out a test run and check if all the results match:

 foreach ($array as $newarray){ echo $newarray. ''; } 

Answer 7

You can check count(array_intersect($arr1, $arr2)) == 0