CODEWITHSUNDEEP
phpgeneratorsplfileobject
Curtis
Curtis

Reputation: 43

SplFileObject iteration duplicates key 0

All,

I cannot for the life of me, figure out why \SplFileObject is repeating the key in the following code. This sample uses Nowdoc as a file stream but this effect can be noted using any file.

PHP Code:

$str = <<<'EOD'
Line 1
Line 2
Line 3
Line 4
Line 5
EOD;

$file = new \SplFileObject('data://text/plain;base64,' . base64_encode($str));
$iterator = call_user_func(function (\SplFileObject $file) {
  while (!$file->eof()) {
    yield [$file->key() => $file->fgets()];
  }
}, $file);

foreach ($iterator as $line) {
  echo key($line) . ': ' . current($line) . PHP_EOL;
}

Output:

0: Line 1
0: Line 2
1: Line 3
2: Line 4
3: Line 5

Upvotes: 1

Views: 192

Answers (0)

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