php 检索帖子数组值
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Retrieve post array values
提问by StudentRik
I have a form that sends all the data with jQuery .serialize()In the form are four arrays qty[], etcit send the form data to a sendMail page and I want to get the posted data back out of the arrays.
我有一个使用 jQuery 发送所有数据.serialize()的表单在表单中有四个arrays qty[], etc它将表单数据发送到 sendMail 页面，我想将发布的数据从数组中取出。
I have tried:
我试过了：
$qty = $_POST['qty[]'];
foreach($qty as $value)
{
$qtyOut = $value . "<br>";
}
And tried this:
并尝试了这个：
for($q=0;$q<=$qty;$q++)
{
$qtyOut = $q . "<br>";
}
Is this the correct approach?
这是正确的方法吗？
回答by ajtrichards
You have []within your $_POSTvariable - these aren't required. You should use:
你有[]你的$_POST变量 - 这些不是必需的。你应该使用：
$qty = $_POST['qty'];
$qty = $_POST['qty'];
Your code would then be:
您的代码将是：
$qty = $_POST['qty'];
foreach($qty as $value) {
$qtyOut = $value . "<br>";
}
回答by Thomas
php automatically detects $_POSTand $_GET-arrays so you can juse:
php 自动检测$_POST和$_GET-arrays，所以你可以判断：
<form method="post">
<input value="user1" name="qty[]" type="checkbox">
<input value="user2" name="qty[]" type="checkbox">
<input type="submit">
</form>
<?php
$qty = $_POST['qty'];
and $qtywill by a php-Array. Now you can access it by:
和$qty将通过一个 php-Array。现在您可以通过以下方式访问它：
if (is_array($qty))
{
for ($i=0;$i<size($qty);$i++)
{
print ($qty[$i]);
}
}
?>
if you are not sure about the format of the received data structure you can use:
如果您不确定接收到的数据结构的格式，您可以使用：
print_r($_POST['qty']);
or even
甚至
print_r($_POST);
to see how it is stored.
看看它是如何存储的。
回答by radioSPARKS
My version of PHP 4.4.4 throws an error: Fatal error: Call to undefined function: size()
我的 PHP 4.4.4 版本抛出错误： 致命错误：调用未定义函数：size()
I changed sizeto countand then the routine ran correctly.
我将大小更改为计数，然后例程正确运行。
<?php
$qty = $_POST['qty'];
if (is_array($qty)) {
for ($i=0;$i<count($qty);$i++)
{
print ($qty[$i]);
}
}
?>
回答by Tailor993
I prefer foreach insted of for, because you do not need to heandle the size.
我更喜欢 foreach insted 的 for，因为你不需要处理大小。
if( isset( $_POST['qty'] ) )
{
$qty = $_POST ['qty'] ;
if( is_array( $qty ) )
{
foreach ( $qty as $key => $value )
{
print( $value );
}
}
}
回答by edmondscommerce
PHP handles nested arrays nicely
PHP 很好地处理嵌套数组
try:
尝试：
foreach($_POST['qty'] as $qty){
echo $qty
}
