用foreach将值添加到关联数组中？

Question

发现的解决方案和投票

---

这里是我的代码：

//go through each question 
foreach($file_data as $value) { 
    //separate the string by pipes and place in variables 
    list($title, $content, $date_posted) = explode('|', $value); 

    //create an associative array for each input 
    $file_data_array['title'] = $title; 
    $file_data_array['content'] = $content; 
    $file_data_array['date_posted'] = $date_posted; 

} 

什么情况是，assoc命令值继续得到清除。有没有一种方法可以将值附加到数组中？如果不是，我还能怎么做？

Answer 1

您合作ULD追加到$file_data_array阵列使用这样的事情：

foreach($file_data as $value) { 
    list($title, $content, $date_posted) = explode('|', $value); 
    $item = array(
     'title' => $title, 
     'content' => $content, 
     'date_posted' => $date_posted 
    ); 
    $file_data_array[] = $item; 
} 

（临时$item变量可以被避免，同时做阵列中的的$file_data_array结束时的声明和做作）

欲了解更多信息，看看本手册的以下部分：Creating/modifying with square bracket syntax

Answer 2

您需要一个额外的密钥。

//go through each question 
$x=0; 
foreach($file_data as $value) { 
    //separate the string by pipes and place in variables 
    list($title, $content, $date_posted) = explode('|', $value); 

    //create an associative array for each input 
    $file_data_array[$x]['title'] = $title; 
    $file_data_array[$x]['content'] = $content; 
    $file_data_array[$x]['date_posted'] = $date_posted; 
    $x++; 
}  

Answer 3

试试这个：

$file_data_array = array(
    'title'=>array(), 
    'content'=>array(), 
    'date_posted'=>array() 
); 
//go through each question 
foreach($file_data as $value) { 
    //separate the string by pipes and place in variables 
    list($title, $content, $date_posted) = explode('|', $value); 

    //create an associative array for each input 
    $file_data_array['title'][] = $title; 
    $file_data_array['content'][] = $content; 
    $file_data_array['date_posted'][] = $date_posted; 

} 

你最终阵列会看起来像：

$file_data_array = array(
    'title' => array ('t1', 't2'), 
    'content' => array ('c1', 'c2'), 
    'date_posted' => array ('dp1', 'dp2') 
) 

这里是它的一个演示：

http://codepad.org/jdFabrzE

Answer 4

你想关联数组追加到$file_data_array？

如果是这样的：

//go through each question 
foreach($file_data as $value) { 
    //separate the string by pipes and place in variables 
    list($title, $content, $date_posted) = explode('|', $value); 

    //create an associative array for each input 
    $file_data_array[] = array(
     "title" => $title, 
     "content" => $content, 
     "date_posted" => $date_posted, 
    ); 

}