PHP fgets function reads extra spaces to solve

When PHP uses fgets to read a string, it originally stops reading when it encounters a new line, but it actually reads more things after the string. I feel that it is the reason for the new line in Windows. rn, it may be this reason, but in the end it always There is a space, which causes errors when I use strings.

I tried it, mainly using fgetc and case, and found that there are two ascii 0 characters at the end of the string. These two things caused the spaces behind the string.

while(!feof($myfile)) {
        $data1 = fgets($myfile);
        $i = strlen($data1);
        //str_replace(array('\n' ,'\r', '\n\r', ''), 'v', $data1);
        switch ($data1) {
             case 0:
                  # code...
             //echo 0;
                  break;
             case 10:
             echo 10;
             break;
             default:
                  # code...
             echo 11;
                  break;
        }
          
          echo $i;
          //$i++;
          echo "aa".$data1."aa";
          
          echo "<br>";
          echo "aa".substr($data1,0, $i-2)."aa";
          
          echo "<br>";
          
}

So just use the string interception function and cut off the last two characters.

$i = strlen($data1);
echo "aa".substr($data1,0, $i-2)."aa";

In this way, it can be read normally, but a space must be added after the last line of string

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The above introduces how to solve the problem of reading extra spaces by the php fgets function, including the content. I hope it will be helpful to friends who are interested in PHP tutorials.