What potential issue is the user facing with the foreach loop in the PHP code?

The potential issue the user is facing with the foreach loop in the PHP code is that the loop variable `$value` is being passed by value, meaning any changes made to it within the loop will not affect the original array. To solve this issue, the user should pass the loop variable by reference by using `&` before the variable name in the foreach loop. 

// Original code with potential issue
$array = [1, 2, 3, 4, 5];
foreach ($array as $value) {
    $value *= 2;
}
print_r($array);

// Fixed code with loop variable passed by reference
$array = [1, 2, 3, 4, 5];
foreach ($array as &$value) {
    $value *= 2;
}
print_r($array);

Keywords

foreach loop PHP code iteration array variable

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