What are the common pitfalls when using foreach loops in PHP to fill arrays?

Common pitfalls when using foreach loops in PHP to fill arrays include overwriting array values, not initializing the array before the loop, and not using the reference operator when modifying array values within the loop. To avoid these pitfalls, make sure to initialize the array before the loop, use the reference operator when necessary, and ensure that you are not overwriting array values unintentionally. 

// Initializing the array before the loop
$array = [];

// Using the reference operator to modify array values within the loop
foreach ($someArray as $key => &$value) {
    $array[$key] = $value;
}

Keywords

foreach loops arrays PHP common mistakes data structure

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