[Solved] What is the primary effect of using the PHP function array_unique() on an array? — Ans: It removes duplicate values, keeping only the first occurrence of each value. | PHP

PHP - Array Functions

What is the primary effect of using the PHP function array_unique() on an array?

AIt removes duplicate values, keeping only the first occurrence of each value.

BIt sorts the array in ascending order.

CIt reverses the order of the array elements.

DIt converts all values to strings.

Step-by-Step Solution

Solution:

Step 1: Understand array_unique()
The function scans the array and removes any duplicate values.
Step 2: Retain first occurrences
Only the first instance of each value is kept; subsequent duplicates are removed.
Final Answer:
It removes duplicate values, keeping only the first occurrence of each value. -> Option A
Quick Check:
Check if duplicates remain after applying array_unique() [OK]

Quick Trick: array_unique() removes duplicates, keeps first occurrence [OK]

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