在PHP中，如何将对象元素添加到数组中？

I'm using PHP. I have an array of objects, and would like to add an object to the end of it.

我正在使用PHP。我有一个对象数组，并希望在它的末尾添加一个对象。

$myArray[] = null; //adds an element
$myArray[count($myArray) - 1]->name = "my name"; //modifies the element I just added

The above is functional, but is there a cleaner and more-readable way to write that? Maybe one line?

以上是功能性的，但是有更清晰，更易读的方式来编写吗？也许一行？

4 个解决方案

#1

Just do:

做就是了：

$object = new stdClass();
$object->name = "My name";
$myArray[] = $object;

You need to create the object first (the new line) and then push it onto the end of the array (the [] line).

您需要先创建对象（新行），然后将其推送到数组的末尾（[]行）。

You can also do this:

你也可以这样做：

$myArray[] = (object) array('name' => 'My name');

However I would argue that's not as readable, even if it is more succinct.

但是，我认为即使它更简洁，也不是那么可读。

#2

Do you really need an object? What about:

你真的需要一个物体吗？关于什么：

$myArray[] = array("name" => "my name");

Just use a two-dimensional array.

只需使用二维数组。

Output (var_dump):

输出（var_dump）：

array(1) {
  [0]=>
  array(1) {
    ["name"]=>
    string(7) "my name"
  }
}

You could access your last entry like this:

您可以像这样访问上一个条目：

echo $myArray[count($myArray) - 1]["name"];

#3

Something like:

就像是：

class TestClass {
private $var1;
private $var2;

private function TestClass($var1, $var2){
    $this->var1 = $var1;
    $this->var2 = $var2;
}

public static function create($var1, $var2){
    if (is_numeric($var1)){
        return new TestClass($var1, $var2);
    }
    else return NULL;
}
}

$myArray = array();
$myArray[] = TestClass::create(15, "asdf");
$myArray[] = TestClass::create(20, "asdfa");
$myArray[] = TestClass::create("a", "abcd");

print_r($myArray);

$myArray = array_filter($myArray, function($e){ return !is_null($e);});

print_r($myArray);

I think that there are situations where this constructions are preferable to arrays. You can move all the checking logic to the class.

我认为有些情况下这种结构比数组更可取。您可以将所有检查逻辑移动到类中。

Here, before the call to array_filter $myArray has 3 elements. Two correct objects and a NULL. After the call, only the 2 correct elements persist.

在这里，在调用array_filter $ myArray之前有3个元素。两个正确的对象和一个NULL。通话结束后，只有2个正确的元素持续存在。

#4

-1

$a=array("red","green");
array_push($a,"blue","yellow");
print_r($a);

#1