PHP lcfirst函数的错误处理方法有哪些

使用try-catch块进行异常处理：

try {    $str = 'Hello World';    $result = lcfirst($str);    echo $result;} catch (Error $e) {    echo 'Error: ' . $e->getMessage();}

function customError($errno, $errstr) {    echo "Error: [$errno] $errstr";}set_error_handler("customError");$str = 'Hello World';$result = lcfirst($str);echo $result;

$str = 'Hello World';$result = @lcfirst($str);if ($result === false) {    echo 'Error: lcfirst function failed';} else {    echo $result;}