如何从另一个函数调用字符串

Question

This is for a school assignment where we're learning how to use functions, and I'm getting an error on the 'while' line and the fscanf line after that.

 <?php openFile($fin); loadFile($fin); function openFile($fin) { $fin = fopen("employees.txt", "r") or die("File not found!"); } function loadFile(&$fin) { fscanf($fin, "%s%s%f", $emp[$i][0],$emp[$i][1],$emp[$i][2]); while(!feof(&$fin)) { $i = $i + 1; fscanf($fin, "%s%s%f", $emp[$i][0],$emp[$i][1],$emp[$i][2]); } } ?> 

Answer 1

you should update

loadFile(openFile($fin));

function openFile($fin) {
    return fopen("employees.txt", "r") or die("File not found!");

}

function loadFile(&$fin) {
    fscanf($fin, "%s%s%f", $emp[$i][0],$emp[$i][1],$emp[$i][2]);
    while(!feof(&$fin)) {
        $i = $i + 1; 
        fscanf($fin, "%s%s%f", $emp[$i][0],$emp[$i][1],$emp[$i][2]);
    }
}

?>

Answer 2

try this add & openFile($fin) and remove & from while(!feof(&$fin))

openFile($fin);
loadFile($fin);

function openFile(&$fin) {
    $fin = fopen("demo.html", "r") or die("File not found!");
}

function loadFile(&$fin) {
    $i=0;
    fscanf($fin, "%s%s%f", $emp[$i][0],$emp[$i][1],$emp[$i][2]);
    while(!feof($fin)) {
        $i = $i + 1; 
        fscanf($fin, "%s%s%f", $emp[$i][0],$emp[$i][1],$emp[$i][2]);
    }

}