将print_r的输出写入txt文件.的PHP
问题描述：
可能重复:
将数组打印到文件中
Possible Duplicate:
Print array to a file
我如何在文件中写输出(例如，当我使用数组时)?我正在尝试这样做:
How can I write the ouput (for example when I use an array), in a file?, I was trying with this:
...
print_r($this->show_status_redis_server());
$status_redis = ob_get_contents();
fwrite($file, $status_redis);
...
答
print_r()具有第二个参数，如果作为TRUE传递，则将其作为字符串返回输出.
print_r() has a second parameters that if passed as TRUE returns the output as a string.
$output = print_r($data, true);
file_put_contents('file.txt', $output);
您甚至可以使用var_export函数进行强制转换，因为它提供了有关数据类型的更好信息.在print_r中，您无法确定变量是否为FALSE的NULL，但是var_export允许使用来确切地查看变量的数据类型.
You could even cosinder using var_export function, as it provides better information about data types. From print_r you can't tell if the variable is NULL of FALSE, but var_export lets use see exactly the data type of a variable.