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What is the difference between Indexed array and Associative array in PHP?

109. What is the difference between Indexed array and Associative array in PHP?

1. Index array has numeric index while associative array has named keys
2. Index array has numeric index while associative array has named keys and numeric index both
3. Index array is one-dimensional array with numeric index while associative array is two-dimensional array with numeric index
4. Index array has numeric index while associative array has one or more arrays

Answer: A) Index array has numeric index while associative array has named keys

Explanation:

The main difference between Indexed array and Associative Array is that - Index array has numeric index while associative array has named keys.