What are the potential pitfalls of converting arrays to strings and back when manipulating file content in PHP?

When converting arrays to strings and back in PHP, potential pitfalls include losing array structure or data integrity due to improper serialization and deserialization methods. To avoid these issues, it's important to use appropriate functions like `json_encode` and `json_decode` for serialization and deserialization, respectively.

// Sample code snippet demonstrating proper serialization and deserialization of arrays

// Array to be converted to string
$array = ['apple', 'banana', 'cherry'];

// Convert array to string using json_encode
$string = json_encode($array);

// Convert string back to array using json_decode
$decodedArray = json_decode($string, true);

// Output the decoded array
print_r($decodedArray);