[Solved] You have an associative array with user IDs as keys and scores as values: $scores = [101 => 50, 102 => 75, 103 => 50, 104 => 90];... Which function should you use? | PHP

PHP - Arrays

You have an associative array with user IDs as keys and scores as values:

$scores = [101 => 50, 102 => 75, 103 => 50, 104 => 90];

You want to sort the array by scores in descending order but keep the user IDs as keys. Which function should you use?

Aarsort()

Brsort()

Ckrsort()

Dsort()

Step-by-Step Solution

Solution:

Step 1: Identify sorting by values descending with keys preserved
arsort() sorts array by values in descending order and keeps keys intact.
Step 2: Compare with other functions
rsort() sorts values descending but resets keys, krsort() sorts keys descending, sort() sorts ascending and resets keys.
Final Answer:
arsort() -> Option A
Quick Check:
Sort values descending and keep keys = arsort() [OK]

Quick Trick: Use arsort() to sort values descending and keep keys [OK]

Common Mistakes:

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