Echo foreach循环内部数组

Question

我有以下代码,当我尝试$test_array使用类似"111 222"的空格打印下面数组中的值时:

$test_array= array('111', '222');


// output headers so that the file is downloaded rather than displayed
header('Content-Type: text/csv; charset=utf-8');
header('Cache-Control: no-store, no-cache'); 
header('Content-Disposition: attachment; filename=data.csv');


$output = fopen('php://output', 'w');


$test_data = array(  
    array('Invoice #', 'Name', 'Email'),  
    array( $test_array, 'John', 'test@yahoo.com')  
);


foreach( $test_data as $row )  
{  
   fputcsv($output, $row, ',', '"');     
}  

fclose($output);

Answer 1

您$test_data在每次循环迭代时覆盖整个.也许你的意思是通过以下方式添加到它[]:

// Initialize it before the first loop.
$test_data = array();

// Inside the inner loop...
foreach($test as $x){ 
  // Append to the $test_data array with []
  $test_data[] = array(  
   array('Invoice #', 'Name', 'Email'),  
   array( $x, 'Jhon', 'test@yahoo.com')  
  );
}

现在$row,第二个循环中的每个值都应该是一个包含两个子数组的数组,第二个数组具有不同的值$x.

注意:实际上不需要$test_data为var_dump()每个元素的内容循环.只需转储整个多维数组:

echo '<pre>'; 
var_dump($test_data);
echo '</pre>';

输出:

Array(2) {
  [0]=>
  array(2) {
    [0]=>
    array(3) {
      [0]=>
      string(9) "Invoice #"
      [1]=>
      string(4) "Name"
      [2]=>
      string(5) "Email"
    }
    [1]=>
    array(3) {
      [0]=>
      string(3) "111"
      [1]=>
      string(4) "Jhon"
      [2]=>
      string(14) "test@yahoo.com"
    }
  }
  [1]=>
  array(2) {
    [0]=>
    array(3) {
      [0]=>
      string(9) "Invoice #"
      [1]=>
      string(4) "Name"
      [2]=>
      string(5) "Email"
    }
    [1]=>
    array(3) {
      [0]=>
      string(3) "222"
      [1]=>
      string(4) "Jhon"
      [2]=>
      string(14) "test@yahoo.com"
    }
  }
}