Question

我已经看到了这么多重复的问题。真的很抱歉重复的问题。但没有找到正确的解决方案或可能没有得到正确的逻辑。我已经使用了usort（）来实现这些目的。我有以下数组。

Array
(
    [0] => stdClass Object
        (
            [id] => 808
            [ScreenName] => Dispatch
            [OriginalName] => First Unit on Scene
            [OriginalPrintName] => First Unit on Scene
            [CurrentName] => Blank
        )

    [1] => stdClass Object
        (
            [id] => 809
            [ScreenName] => Dispatch
            [OriginalName] => EMS Agency
            [OriginalPrintName] => EMS Agency
            [CurrentName] => Blank
        )

    [2] => stdClass Object
        (
            [id] => 597
            [ScreenName] => Dispatch
            [OriginalName] => Date
            [OriginalPrintName] => Date
            [CurrentName] => Date 
        )
    [3] => stdClass Object
        (
            [id] => 509
            [ScreenName] => Dispatch
            [OriginalName] => Incident #
            [OriginalPrintName] => Incident #
            [CurrentName] => Incident #
        )
    [4] => stdClass Object
        (
            [id] => 758
            [ScreenName] => Dispatch
            [OriginalName] => Run# /Call #
            [OriginalPrintName] => Run#
            [CurrentName] => Run Call 
        )
)

使用以下条件

if (($y2->CurrentName == "") || ($y2->CurrentName == "Blank")) {
    print  $y2->OriginalName ;
} else {
    print  $y2->CurrentName ;
}

在列表中，打印所有CurrentName但是如果currenName为空，则打印OriginalName
像这样的东西。

Date
Incident #
Run Call
Type Of Service Req
Complaint Reported
Response Urgency
Location Type
Address Type
Address
Address Cont

我想将这些列表显示为albhabetically sort。我的usort（）函数是

    usort($yvals, function ($elem1, $elem2) {
      if (($elem1->CurrentName == "" || $elem1->CurrentName == "Blank") && ($elem2->OriginalName == "" || $elem2->OriginalName == "Blank")) {
      return strcmp($elem1->OriginalName, $elem2->OriginalName);
  }else if(($elem1->CurrentName != "" || $elem1->CurrentName != "Blank") && ($elem2->CurrentName == "") || ($elem2->CurrentName == "Blank")){
       return strcmp($elem1->CurrentName, $elem2->OriginalName);
  }else{
     return strcmp($elem1->CurrentName, $elem2->CurrentName);
  }
});

它在某个地方工作，但不适合所有人。

Answer 1

尝试strcasecmp代替strcmp ...

Answer 2

这可能不是最优的，但我在某些情况下迭代php中的对象的经验会产生反直觉的结果，为了简单起见，我会将排序与您想要一次性实现的过滤分开。另外，将对象托管到工作类并将名称检索移动到方法将是很好的编程实践。

class SomeWorkingClass{
    public function getProperName(){
    // proper name retrieval functionality
  }
}

usort($yvals, function ($elem1, $elem2) {
     return strcmp($elem1->getProperName(), $elem2->getProperName());
}

比较和排序2d数组在php中的子值

2 个答案: