What are common pitfalls when trying to change a value in a JSON object using PHP?

Common pitfalls when trying to change a value in a JSON object using PHP include not decoding the JSON string into an associative array before making changes, not correctly accessing the value within the array, and not encoding the array back into a JSON string after making changes. To solve this issue, make sure to decode the JSON string using `json_decode()`, access the value using array notation, make the necessary changes, and then encode the array back into a JSON string using `json_encode()`. 

$jsonString = '{"key1": "value1", "key2": "value2"}';
$array = json_decode($jsonString, true);

// Change the value of "key2"
$array['key2'] = "new value";

$newJsonString = json_encode($array);
echo $newJsonString;

Keywords

JSON PHP object value manipulation

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