Are there any potential pitfalls to consider when linking variables in PHP?

One potential pitfall to consider when linking variables in PHP is the risk of accidentally overwriting or modifying the original variable when assigning it to another variable. To avoid this issue, it is recommended to use the `&` symbol when linking variables, which creates a reference to the original variable rather than a copy. 

$originalVariable = "Hello";
$linkedVariable = &$originalVariable;

$linkedVariable = "World";

echo $originalVariable; // Output: World
echo $linkedVariable; // Output: World

Keywords

variable linking PHP scope reference memory allocation

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