What are some potential errors to watch out for when using json_decode in PHP?

One potential error when using json_decode in PHP is not handling invalid JSON data properly, which can result in a null return value or a warning message. To avoid this issue, you can check the return value of json_decode and handle any errors accordingly by using the JSON_ERROR_NONE constant. 

$json_data = '{"key": "value"}';
$decoded_data = json_decode($json_data);

if ($decoded_data === null && json_last_error() !== JSON_ERROR_NONE) {
    // Handle error here
    echo "Error decoding JSON: " . json_last_error_msg();
} else {
    // JSON data decoded successfully
    var_dump($decoded_data);
}

Keywords

json_decode PHP errors data types parsing

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