数组内的 PHP 循环 [英] PHP Loop inside array

问题描述

如何在代码中的 array 中循环?

How can I loop inside an array in my code?

这是我的脚本的静态版本:

This is the static version of my script:

$val=array(
array("value" => "Male","label" => "Male"), 
array("value" => "Female","label" => "Femal"),  
);

my_form("Gender","select","gender",$val,"",5);

然后，我需要从数据库中检索value 和label.

Then, I need to retrieve the value and label from the database.

所以我将之前的代码自定义为:

So I customized my previous code to:

$div=array(
while($h = mysql_fetch_array($qwery)){
array("value" => "$h[id]","label" => "$h[div]"),    
}
);

my_form("Division","select","id_div",$div,"",5);

当我运行它时，我得到这个错误信息:

When I run it I get this Error message:

解析错误:语法错误，意外的'while' (T_WHILE)，期望')'

Parse error: syntax error, unexpected 'while' (T_WHILE), expecting ')'

有人可以帮我吗?

我想将连接数据从我的数据库循环到 :

I want to loop the join data from my database into :

输入类型="选择"

推荐答案

不能将循环直接用作数组中的值.相反，循环并为 while 循环的每次迭代添加每个数组.

You can't use a loop directly as a value in an array. Instead, loop over and add each array for each iteration of the while-loop.

使用 $div[] = "value"，您可以将该值添加为该数组中的新元素.

Using $div[] = "value", you add that value as a new element in that array.

$div = array(); // Initialize the array 

// Loop through results
while ($h = mysql_fetch_array($qwery)) { 
    // Add a new array for each iteration
    $div[] = array("value" => $h['id'], 
                   "label" => $h['div']);
}

这将创建一个二维数组，看起来(作为示例)像

This will create a two-dimensjonal array which would look (as an example) like

array(
    array(
        "value" => "Male",
        "label" => "Male"
    ), 
    array(
        "value" => "Female",
        "label" => "Female"
    )  
);

...然后你可以用 foreach 来查看它来做你想做的事情.

...which you then can look through with a foreach to do what you want with it.

如果您希望将其作为选择元素中的选项输出，您可以直接这样做

If you want this to be output as options in a select-element, you could just do that directly

<select name="sel">
    <?php 
    while ($row = mysql_fetch_array($qwery)) { 
        echo '<option value="'.$row['id'].'">'.$row['div'].'</option>';
    }
    ?>
</select>

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