json_encode使用数组源无法正常工作

Question

In my php I am reading a file and successfully getting each row into an array ($line[1] because its a 3 column CSV and I just need the 2nd value):

while (($line = fgetcsv($file, 1000)) !== false)
    {           
        $course[] = array('course' => $line[1]);            
    }

$course[] correctly contains the array like:

0 => 
array (size=1)
  'course' => string 'Course One' (length=68)
1 => 
array (size=1)
  'course' => string 'Course Two' (length=45)

Problem is I cannot get the array to convert to json using json_encode

$json_res = json_encode($course);

EDIT: So just to be clear, I have array like this

2 => 
array (size=1)
  'course' => string 'Associate Degree of Business Studies' (length=36)
3 => 
array (size=1)
  'course' => string 'Associate Degree of Business Administration' (length=43)

$json_encode , gives me

boolean false

Answer 1

ok after taking in consideration all the information you provided, your original code should work. Try this out and let me know if it works.

$file = new SplFileObject("file.csv");
$file->setFlags(SplFileObject::READ_CSV);
$course = array();
foreach ($file as $row) {
    $line = array('course' => $row[1]);
    array_push($course, $line);
}
$json_res = json_encode($course);
var_dump($json_res);

Update: Try this code and let me know if it works:

$file = fopen('file.csv', 'r');
$course = array();
while (($data = fgetcsv($file, 1000, ",")) !== FALSE) {
    $line = array('course' => utf8_decode($data[1]));
    array_push($course, $line);
}
$json_res = json_encode($course);
var_dump($json_res)

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