What are common pitfalls when using 'foreach' in PHP?

One common pitfall when using 'foreach' in PHP is modifying the array being iterated over within the loop. This can lead to unexpected behavior or errors. To avoid this issue, create a copy of the array before iterating over it. 

// Create a copy of the array before iterating over it
$array = [1, 2, 3, 4, 5];
$arrayCopy = $array;

foreach ($arrayCopy as $value) {
    // Modify $arrayCopy instead of $array
    echo $value * 2 . "\n";
}

Keywords

foreach PHP array iteration error

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