计算foreach循环外的所有结果值

Question

I would like to count all characters in text files in certain path, so i've wrote the following code

<?PHP

$files = glob('my/files/path/*.txt', GLOB_BRACE); 

foreach($files as $file) { 

$str = file_get_contents($file) or dir("can not read file");

$numCharSpace = strlen($str);

echo "Counted " .$numCharSpace. " character(s).<br>";

} 

?>

Let say, we have 4 files inside this path so it will print out the following

Counted 201 character(s).
Counted 99 character(s).
Counted 88 character(s).
Counted 112 character(s).

How can i get the total of all which should be 500 character(s) so how to print out the count of all results which are inside foreach(); loop.

Answer 1

With strlen you get the number of the bytes of the file. So, you can as well get that directly, without the need to read the file contents.

$numberOfChars = array_sum(
    array_map('filesize', glob('my/files/path/*.txt', GLOB_BRACE))
);

What this does is get the file size for each one of the files returned by glob, and sum them using array_sum.