1、output basic type
代码
$n = test;
var_export($n);
print_r($n);
var_dump($n);
echo '-----------------' . '<br><br>';
file_put_contents(index.log, var_export($n, true) . PHP_EOL, FILE_APPEND);
file_put_contents(index.log, print_r($n, true) . PHP_EOL, FILE_APPEND);
file_put_contents(index.log
