如何在PHP中删除对象数组中的重复项？

I have an object like this:

我有一个像这样的对象:

class FanStruct{
    public $date; 
    public $userid;

    function __construct($date, $id){
        $this->date = $date;
        $this->userid = $id;
    }
}

I have maximum of 30 of them in an array, and they are sorted by $userid.

我在一个数组中最多有30个,它们按$ userid排序。

What is the best way to go though the array, and remove duplicate objects based on $userid (ignoring $date)?

通过数组的最佳方法是什么,并删除基于$ userid的重复对象(忽略$ date)?

2 个解决方案

#1

Here's a simple test that at least should get you started. Your __toString method might need to be more elaborate to generate uniqueness for your instances of FanStruct

这是一个简单的测试,至少应该让你开始。您的__toString方法可能需要更精细,以便为您的FanStruct实例生成唯一性



<?php

class FanStruct{
    public $date;
    public $userid;

    function __construct($date, $id){
        $this->date = $date;
        $this->userid = $id;
    }

    public function __toString()
    {
      return $this->date . $this->userid;
    }
}

$test = array(
  new FanStruct( 'today', 1 )
  ,new FanStruct( 'today', 1 )
  ,new FanStruct( 'tomorrow', 1 )
);

print_r( array_unique( $test ) );

?>
</pre>

#2

$temp = array($fans[$x]);
for(var $x=1;$x<sizeof($fans);$x++) {
  if ($fans[$x]->userid != $fans[$x]->userid)
     $temp[] = $fans[$x];
}

Requires a temporary variable, but works.

需要一个临时变量,但有效。

#1