What potential issues may arise when using unset() to remove elements from an array in PHP?

When using unset() to remove elements from an array in PHP, potential issues may arise if the array keys are not reindexed after removal. This can lead to unexpected behavior when iterating over the array or accessing specific elements by key. To solve this issue, you can use array_values() to reindex the array keys after removing elements. 

// Sample array with elements to be removed
$array = ['a', 'b', 'c', 'd'];

// Remove element at index 1
unset($array[1]);

// Reindex the array keys
$array = array_values($array);

// Output the updated array
print_r($array);

Keywords

unset array elements memory references

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