array_unique Online
Test PHP's array_unique() function online using real PHP 8.2. Remove duplicate values from arrays and see the results instantly. Perfect for testing data deduplication.
array_unique(array $array, int $flags = SORT_STRING): array PHP Array Input
Enter a PHP array with duplicate values
Sort Flags
PHP Code
This is the actual PHP code that will be executed
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Common Examples
array_unique() Function Guide
About array_unique()
This tool runs actual PHP 8.2 code on our server using Docker containers. The array_unique() function removes duplicate values from an array and returns a new array with only unique values. The keys are preserved from the original array.
- Removes duplicate values
- Preserves original keys
- Returns array with unique values
- Supports different comparison flags
- First occurrence is kept
Sort Flags
SORT_STRING- Compare as strings (default)SORT_NUMERIC- Compare numericallySORT_REGULAR- Compare normally (mixed types)
💡 Note: Keys are preserved! Use array_values() after array_unique() to re-index the array from 0.
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