What are some common pitfalls to avoid when iterating through arrays and processing data in PHP scripts?

One common pitfall to avoid when iterating through arrays in PHP is modifying the array while iterating over it. This can lead to unexpected results or errors in the iteration process. To solve this issue, create a copy of the array before iterating over it, or use a foreach loop to iterate without modifying the original array. 

// Avoid modifying the array while iterating over it
$array = [1, 2, 3, 4, 5];

// Incorrect way to iterate and modify the array
foreach ($array as $key => $value) {
    unset($array[$key]);
}

// Correct way to iterate without modifying the original array
foreach ($array as $value) {
    // Process data here
}

Keywords

foreach array indexing data processing error handling

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