[英]How to create variables and assign them values within a for each loop in PHP?
I have for each loop which when looping outputs the items held in a basket array. 对于每个循环,我都有一个循环,该循环输出保存在篮子数组中的项目。 This works great, but I want to store a few things per EACH item in session variables so I can use this information elsewhere, I am trying to create session variables inside the foreach loop, but of course the variables need to have different names every time it loops through a different item. 这很好用,但是我想在会话变量中为每个项目存储一些东西,以便可以在其他地方使用此信息,我试图在foreach循环中创建会话变量,但是当然每次变量都需要使用不同的名称它遍历另一个项目。 I have researched how to create variables dynamically, I couldn't figure it out. 我研究了如何动态创建变量,但无法弄清楚。 This is something I have always felt would come in handy, but as it seems difficult I just avoid it, but now I want to know if its possible. 我一直觉得这很方便,但是似乎很难避免,但现在我想知道它是否可行。
Here is my for each loop code, you can see inside the three session variables I want to create for each item in the basket: 这是我的每个循环代码,您可以在篮子中为每个项目创建的三个会话变量内看到:
foreach ($basketarray as $value)
{
echo "<div id='basketitems'><br/>
".$value['name']."<br/>
".$value['id']."<br/>
£".$value['price']."<br/>
".$value['size']."<br/>
Quantity: ".$value['quantity']."<br/><br/>
<img id='searchimage' src=".$value['picture']." width='210' height='250' /><br/>";
$_SESSION['Bprodid'] = $value['id'];
$_SESSION['Bprodquantity'] = $value['quantity'];
$_SESSION['Bprodprice'] = $value['price'];
echo "<form action='deletefrombasket.php' name='basketdelete$items' id='basketdelete$items' method='POST'>
<input type='submit' name='".$value['basketid']."' value='Remove' id='basketid' name='basketid'/>
</form></div>";
$items++;
}
?>
<div id='basketdetails'>
<?php
echo "<p>items ". number_format($basketitems)."</p>";
echo "<p>Total £ ".number_format($baskettotal, 2, '.', ',')."</p>";
if($basketitems && $baskettotal !=0)
{
echo "<a href='clear.php'>Empty Basket</a>";
echo "<a href='checkout.php'>Checkout</a>";
}
So it is possible to do something like this? 所以可以做这样的事情吗? I was trying to create varaible names by using a counter but I was unsuccessful. 我试图通过使用计数器来创建易变的名称,但未成功。
I would appreciate any advice. 我将不胜感激任何建议。
Thanks 谢谢
Put the values in arrays. 将值放在数组中。 Then use a counter that increments for each loop to sderver as the key for each value. 然后,使用对每个循环递增的计数器来存储作为每个值的键。
$counter = 0;
foreach ($basketarray as $value)
{
// Code goes here
$_SESSION['Bprodid'][$counter] = $value['id'];
$_SESSION['Bprodquantity'][$counter] = $value['quantity'];
$_SESSION['Bprodprice']$counter[] = $value['price'];
// More code
$counter++
}
To access each value use a for loop: 要访问每个值,请使用for循环:
$size = count($_SESSION['Bprodid']);
for ($i = 0; $i < $size; $i++)
{
echo $_SESSION['Bprodid'][$i] . "<br>\n";
echo $_SESSION['Bprodquantity'][$i] . "<br>\n";
echo $_SESSION['Bprodprice'][$i] . "<br><br>\n";
}
Your session variable can be a multi-dimensional array, so before the loop you can say: 您的会话变量可以是多维数组,因此在循环之前您可以说:
$_SESSION['my_values'] = array();
And in the loop: 并在循环中:
$_SESSION['my_values'][$value['id']]['Bprodquantity'] = $value['quantity'];
$_SESSION['my_values'][$value['id']]['price'] = $value['price'];
// etc.
Edit: To loop through all your values you can use: 编辑:要遍历所有值,可以使用:
foreach ($_SESSION['my_values'] as $key => $values)
{
echo $key; // the ID of your product
echo $values['quantity']; // the quantity
echo $values['price']; // the price
}
Store you values into an array $products[$items]["prodId"]
and so on and after the loop set your session variable to the array, $_SESSION["products"] = $products
. 将值存储到数组$products[$items]["prodId"]
,依此类推,然后在循环中将会话变量设置为数组$_SESSION["products"] = $products
。 You can then access the items with $_SESSION["products"][$itemNumber]["prodId"]
and so forth. 然后,您可以使用$_SESSION["products"][$itemNumber]["prodId"]
等访问这些项目。
You can use serialize() and unserialize() function to save whole array in session: 您可以使用serialize()和unserialize()函数将整个数组保存在会话中:
$_SESSION['sbasketarray'] = serialize($basketarray);
and in other script which need data: 和其他需要数据的脚本中:
if (isset ( $_SESSION['sbasketarray'] )) {
$basketarray = unserialize ( $_SESSION['sbasketarray'] );
}
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