CODEWITHSUNDEEP
phparrayssorting
ImBhavin95
ImBhavin95

Reputation: 1527

How to find 5 biggest value from php array with original keys?

This array keys is a database primary keys and i need to find biggest value from array and after that update query which need this primary keys. so i need to it will be remain same keys.

My array

Array ( [1] => 7 [2] => 2 [3] => 2 [4] => 10 [5] => 15  [6] => 11 [7] => 40 )

i need this output

Array ( [7] => 40 [5] => 15 [6] => 11 [4] => 10 [1] => 7 )

Upvotes: 2

Views: 50

Answers (1)

chris85
chris85

Reputation: 23880

The PHP arsort function will sort your array in descending order and maintain the indices.

$array = array ( 1 => 7, 2 => 2, 3 => 2, 4 => 10, 5 => 15,  6 => 11, 7 => 40 );
arsort($array);
print_r($array);

Demo: eval.in/836445https://3v4l.org/KQB5Y

To limit it to the top five use array_slice:

print_r(array_slice($array, 0, 5, true));

https://3v4l.org/DSkRt

Upvotes: 2

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