php数组：如何仅打印数组值而不是键

Question

此代码循环遍历一个mysql表并输出空/空字段。然而，它打印的数组值和按键这样

Array ( 
    [0] => Field "dob" on entry "1" is empty/null 
    [1] => Field "user_name" on entry "7" is empty/null 
) 

如何打印像这样field "dob" on entry "1" is empty/null

$sql = "SELECT * FROM userinfo"; 
$res = mysql_query($sql); 
while ($row = mysql_fetch_array($res)) { 
    foreach($row as $key => $field) { 
     if(empty($field)) { 
      $emptyFields[] = sprintf('Field "%s" on entry "%d" is empty/null', $key, $row['userid']); 
     } 
    } 
} 
print_r($emptyFields); 

Answer 1

echo implode('<br>', $emptyFields); 

Answer 2

$sql = "SELECT * FROM userinfo"; 
$res = mysql_query($sql); 
while ($row = mysql_fetch_array($res)) { 
    foreach($row as $key => $field) { 
    if(empty($field)) { 
     $emptyFields[] = sprintf('Field "%s" on entry "%d" is empty/null', $key, $row['userid']); 
    } 
    } 
} 

Answer 3

我不知道如果我得到这个正确的，但我认为解决你的问题是：

改变最后一行：

$emptyFields[] = sprintf('Field "%s" on entry "%d" is empty/null', $field, $row['userid']);}}}print_r($emptyFields); 

Answer 4

这是因为您正在使用print_r来输出该数组。所以输出格式化为人类可读。 为了使它更漂亮尝试来遍历它像你的那场以前那样：

foreach($emptyFields as $key => $field) { 
echo('Field "'.$field.'" on entry "'.$emptyField['userid'].'" is empty/null'); 
}