这是我的对象在使用print_r命令输出时的样子（这是由PHP SDK for the Amazon Web Services Simple DB返回的对象）：
[GetAttributesResult] => CFSimpleXML Object
(
[Attribute] => Array
(
[0] => CFSimpleXML Object
(
[Name] => data_datein
[Value] => 2011-04-23
)
[1] => CFSimpleXML Object
(
[Name] => data_estatus
[Value] => 0
)
[2] => CFSimpleXML Object
(
[Name] => data_status
[Value] => 1
)
[3] => CFSimpleXML Object
(
[Name] => data_title
[Value] => Company Info
)
[4] => CFSimpleXML Object
(
[Name] => data_tags
[Value] => firsttag
)
[5] => CFSimpleXML Object
(
[Name] => data_tags
[Value] => secondtag
)
[6] => CFSimpleXML Object
(
[Name] => data_tags
[Value] => thirdtag
)
[7] => CFSimpleXML Object
(
[Name] => data_files
[Value] => company_info.flv
)
[8] => CFSimpleXML Object
(
[Name] => data_id
[Value] => 8993
)
)
)
我有一个函数，它遍历GetAttributesResult对象并创建一个关联数组，使得可以通过名称轻松引用我的字段。其中之一是data_tags，它重复了未知次数。我想将data_tags作为这些值的简单索引数组返回。以下是我的函数，但它不起作用。
function attrToArray($select) {
$results = array();
$x = 0;
foreach($select->body->GetAttributesResult as $result) {
foreach ($result as $field) {
if (array_key_exists($field,$results[$x])) {
$results[$x][ (string) $field->Name ][] = (string) $field->Value;
} else {
$results[$x][ (string) $field->Name ] = (string) $field->Value;
}
}
$x++;
}
return $results;
}
我不确定这是否是最优雅的解决方案，但我认为它应该是可行的。array_key_exists没有返回true。我错误地测试了
in_array($field-Name,$results[$x])，这样就构建了我重复的$field->Name值的数组...但它也将所有其他值转换为单个嵌套数组...所以它似乎返回true的次数比我想象的要多。虽然那里的连字符是错的，我本来想用->，它不会返回true...所以我对发生的事情非常困惑。以下是print_r显示的返回内容。Array ( [0] => Array (
[data_datein] => 2011-04-23
[data_estatus] => 0
[data_status] => Array ( [0] => 1 )
[data_title] => Array ( [0] => Company Info )
[data_tags] => Array (
[0] => firsttag
[1] => secondtag
[2] => thirdtag )
[data_files] => Array ( [0] => company_info.flv )
[data_id] => Array ( [0] => 8993 ) ) )
有没有关于如何更好地处理这个问题的指针、建议或说明……以及至少如果有人能够弄清楚我如何在其他非冗余字段上获取上述数组中的嵌套数组，那就太感激了！
这是$result的print_r()结果：
CFSimpleXML对象
(
[属性] => 数组
(
[0] => CFSimpleXML对象
(
[名称] => data_datein
[值] => 2011-04-23
)
[1] => CFSimpleXML Object
(
[Name] => data_estatus
[Value] => 0
)
[2] => CFSimpleXML Object
(
[Name] => data_title
[Value] => 0001 01 Company Name
)
[3] => CFSimpleXML Object
(
[Name] => data_status
[Value] => 1
)
[4] => CFSimpleXML Object
(
[Name] => data_tags
[Value] => good stuff
)
[5] => CFSimpleXML Object
(
[Name] => data_tags
[Value] => save tags
)
[6] => CFSimpleXML Object
(
[Name] => data_tags
[Value] => tagger works
)
[7] => CFSimpleXML Object
(
[Name] => data_files
[Value] => 0001_01_company_name.flv
)
[8] => CFSimpleXML Object
(
[Name] => data_id
[Value] => yFKwIxjIhH
)
)
)
以下是对$field的print_r()结果（通过<hr>标签分隔）:
CFSimpleXML Object
(
[Name] => data_datein
[Value] => 2011-04-23
)
<hr>CFSimpleXML Object
(
[Name] => data_estatus
[Value] => 0
)
<hr>CFSimpleXML Object
(
[Name] => data_title
[Value] => 0001 01 Company Name
)
<hr>CFSimpleXML Object
(
[Name] => data_status
[Value] => 1
)
<hr>CFSimpleXML Object
(
[Name] => data_tags
[Value] => good stuff
)
<hr>CFSimpleXML Object
(
[Name] => data_tags
[Value] => save tags
)
<hr>CFSimpleXML Object
(
[Name] => data_tags
[Value] => tagger works
)
<hr>CFSimpleXML Object
(
[Name] => data_files
[Value] => 0001_01_company_name.flv
)
<hr>CFSimpleXML Object
(
[Name] => data_id
[Value] => yFKwIxjIhH
)