删除具有相似值的数组

Question

基本上，我有一个关联数组列表，我正在尝试为所有数组输出键和值。这是我的代码。

$sites = array("www.google.com" => "Google", "www.apple.com" => "Apple", 
"www.apple.com" => "Apple");
foreach ($sites as $url => $name ){
echo $name . " " . $url . "<br/>"; 
}

如您所见，'apple' 正在重复，因此它不会显示在 foreach 循环中。这是上面代码的输出。

Google www.google.com
Apple www.apple.com

如何显示所有数组值？

谢谢。

Answer 1

索引不能相同，希望对您有所帮助

$sites = array(array("www.google.com" => "Google"),array( "www.apple.com" => "Apple"), 
    array("www.apple.com" => "Apple"));
    foreach ($sites as $key => $value ){

      foreach($sites[$key] as $key1 =>$value1)
        {

          echo $sites[$key][$key1] . " " . $key1 . "<br/>"; 
        }

    }

Answer 2

Construct multidimensional array as follows. Because your array has duplicate indexes.
$sites = [
            ["www.google.com" => "Google"], 
            ["www.apple.com" => "Apple"], 
            ["www.apple.com" => "Apple"]
         ];

 foreach ($sites as $url_arr ){
      foreach ($url_arr as $url => $name ){
          echo $name . " " . $url . "<br/>"; 
     }
 }

Answer 3

无需使用任何for循环。

您只需要使用 **array_unique()** 函数来删除重复值。

<?php

$sites = array("www.google.com" => "Google", "www.apple.com" => "Apple", 
"www.apple.com" => "Apple");

print_r(array_unique($sites));
?>

Output will be like following

Array ( [www.google.com] => Google [www.apple.com] => Apple )

删除具有相似值的数组

Array with similar value being removed

php

arrays

associative-array