用foreach替换？

Question

这条线我要替换：

reset($currencies->currencies); 
while (list($key, $value, $title) = each($currencies->currencies)) { 

我认为这是正确的？或者我错了吗？

foreach($currencies->currencies as $key => $value, $title) { 

Answer 1

foreach结构有两种形式：（foreach $ foo as $ bar）和（foreach $ array as $ key =＆gt; value）。因此，以逗号分隔的＆＃34;值＆＃34;似乎没有工作，或者看起来如此，因为你显然有一个多维数据结构（每个$ key的值超过一个$）。

您也不会说（$ currency-＆gt; currency）是数组还是其他对象。

如果$ currency-＆gt;币种是对象：

foreach ($currencies->currencies as $myObject) {

    echo "The key is: "   . $myObject->key; 
    echo "The value is: " . $myObject->value;
    echo "The title is: " . $myObject->title;
}

如果$ currency-＆gt;货币是数组：

foreach ($currencies->currencies as $myArray) {

    echo "The key is: "   . $myArray['key']; 
    echo "The value is: " . $myArray['value'];
    echo "The title is: " . $myArrat['title'];
}