PHP-循环从数组获取值

Question

I'm working with an array and would like to grab the value for a few elements in each member of the array as I loop through them. 我正在使用一个数组，并希望在遍历它们时在数组的每个成员中获取一些元素的值。 Here's what the array looks like: 这是数组的样子：

I'm trying to loop through the array as follows and grab the InvoiceID value: 我正在尝试如下遍历数组并获取InvoiceID值：

// Loop through each invoice                
            $recnum = 1;

                foreach($invoices as $invoice){

                    $invoiceID = $invoice['InvoiceID'];

                $recnum++; 


                }

but when I echo the value for $invoiceID it is empty - I gather there is a syntax error in this line: 但是，当我回显$ invoiceID的值时，它为空-我收集到这一行有语法错误：

$invoiceID = $invoice['InvoiceID']

but not sure what the error is here. 但不知道这里是什么错误。

Answer 1

First of all convert xml object into array: 首先将xml对象转换为数组：

$xml   = simplexml_load_string($string, 'SimpleXMLElement', LIBXML_NOCDATA);

$array = json_decode(json_encode($xml), TRUE);

$invoices = $array['Invoices']['Invoice'];

after this run loop to get invoice id: 在此运行循环后获取发票ID：

foreach($invoices as $invoice){

     $invoiceID = $invoice['InvoiceID']

}

Answer 2

Try this 尝试这个

  $invId = array();

                foreach($invoices['Invoices']['Invoice'] as $invoice){

                    $invId[] = $invoice['InvoiceID'];

                 }
print_r($invId);

echo $invId[0]; echo $ invId [0]; // for individual value //对于单个值

Answer 3

Suppose you are saving this data in $xml, then the array that you need to pass to foreach loop should be: $xml->Invoices->Invoice 假设您将此数据保存在$ xml中，则需要传递给foreach循环的数组应为：$ xml-> Invoices-> Invoice

Again the array elements contains data in XML Object format. 同样，数组元素包含XML对象格式的数据。 So cannot get the data using $invoice['InvoiceID']. 因此无法使用$ invoice ['InvoiceID']获取数据。 The change will be $invoice->InvoiceID. 更改将为$ invoice-> InvoiceID。

'[]' for array and '->' for object “ []”表示数组，“->”表示对象

Answer 4

@Gaurav @Gaurav

Last InvoiceID will be produced after iteration. 最后的InvoiceID将在迭代后产生。 If all InvoiceID required then little change required in your code. 如果需要所有InvoiceID，则代码中几乎不需要更改。

$xml   = simplexml_load_string($string, 'SimpleXMLElement', LIBXML_NOCDATA);
$array = json_decode(json_encode($xml), TRUE);
$invoices = $array['Invoices']['Invoice'];
foreach($invoices as $invoice){
    $invoiceID[] = $invoice['InvoiceID']
}

PHP-循环从数组获取值

问题描述

4 个解决方案

解决方案1
0 2017-04-04 06:19:54

解决方案2
0 2017-04-04 06:23:57

解决方案3
0 已采纳 2017-04-04 06:36:12

解决方案4
0 2017-04-04 06:46:48

PHP-循环从数组获取值

问题描述

4 个解决方案

解决方案1 0 2017-04-04 06:19:54

解决方案2 0 2017-04-04 06:23:57

解决方案3 0 已采纳 2017-04-04 06:36:12

解决方案4 0 2017-04-04 06:46:48

解决方案1
0 2017-04-04 06:19:54

解决方案2
0 2017-04-04 06:23:57

解决方案3
0 已采纳 2017-04-04 06:36:12

解决方案4
0 2017-04-04 06:46:48