How can the use of unique keys improve the accuracy of array manipulation in PHP?

Using unique keys in arrays can improve the accuracy of array manipulation in PHP by ensuring that each element in the array is distinct and easily identifiable. This prevents duplicate values from causing confusion or errors during manipulation operations. Unique keys also make it easier to access specific elements in the array using their keys, leading to more efficient and accurate data processing. 

// Using unique keys in an array to improve accuracy of array manipulation
$studentGrades = [
    'John' => 85,
    'Alice' => 92,
    'Bob' => 78
];

// Accessing and updating John's grade
echo "John's grade before update: " . $studentGrades['John'] . "\n";
$studentGrades['John'] = 90;
echo "John's grade after update: " . $studentGrades['John'];

Keywords

unique keys array manipulation accuracy PHP improve

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