清除数组中的重复值吗？

发布于 2024-10-16 05:14:21 字数 4440 浏览 7 评论 0原文

大家好，

有人可以请帮帮我吗，我已经尝试解决这个问题有一段时间了，现在摸不着头脑。

我正在添加指向 SESSION 数组的链接，这是我的代码。

    session_start();
$test = $_GET;
$_SESSION['value'][]=$test;
echo "<pre>";
//print_r($_SESSION);
echo "</pre>";


$turn = $_SESSION['value'];

foreach (array_reverse($turn) as $value) { 

$furl = "http://example.s3.amazonaws.com/".urlencode($value['tune_name']);

echo $furl;

}

这是我的 print_r($_SESSION); 的结果

所以我想做的是循环遍历该数组并显示链接，但我不知道任何重复的值。

$turn = $_SESSION['value'];

foreach (array_reverse($turn) as $value) { 

$furl = "http://example.s3.amazonaws.com/".urlencode($value['tune_name']);

echo $furl;

}

这是我从 foreach 得到的结果。

http://example.s3.amazonaws.com/Music%2Fdnb%2FAbort_Delta+Heavy_192.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2FAbort_Delta+Heavy_192.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2F03+Twerk+feat.+Yo+Majesty+%28Sub+Focus+Remix%29.mp3
http://example.s3.amazonaws.com/
http://example.s3.amazonaws.com/Music%2Fdnb%2FAbort_Delta+Heavy_192.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2F21st+Century+%28Feat.+Cabbie%29_Tantrum+Desire_192.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2F03+Twerk+feat.+Yo+Majesty+%28Sub+Focus+Remix%29.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2FAbort_Delta+Heavy_192.mp3
http://example.s3.amazonaws.com/

太烦人了，我只想让它显示出来。

 http://example.s3.amazonaws.com/Music%2Fdnb%2FAbort_Delta+Heavy_192.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2F03+Twerk+feat.+Yo+Majesty+%28Sub+Focus+Remix%29.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2F21st+Century+%28Feat.+Cabbie%29_Tantrum+Desire_192.mp3

因为上面没有任何重复的值，所以我尝试了很多 array_unique 对我不起作用，有人可以帮忙吗？

原文

HI all

Can someone please please help me been trying to suss this for a while now scratching my head.

I am adding links to a SESSION array here is my code.

    session_start();
$test = $_GET;
$_SESSION['value'][]=$test;
echo "<pre>";
//print_r($_SESSION);
echo "</pre>";


$turn = $_SESSION['value'];

foreach (array_reverse($turn) as $value) { 

$furl = "http://example.s3.amazonaws.com/".urlencode($value['tune_name']);

echo $furl;

}

here is the result off my print_r($_SESSION);

so what i am trying to do is loop through that array and show the link but i dont what any duplicate values.

$turn = $_SESSION['value'];

foreach (array_reverse($turn) as $value) { 

$furl = "http://example.s3.amazonaws.com/".urlencode($value['tune_name']);

echo $furl;

}

and this is the result i get from the foreach.

http://example.s3.amazonaws.com/Music%2Fdnb%2FAbort_Delta+Heavy_192.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2FAbort_Delta+Heavy_192.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2F03+Twerk+feat.+Yo+Majesty+%28Sub+Focus+Remix%29.mp3
http://example.s3.amazonaws.com/
http://example.s3.amazonaws.com/Music%2Fdnb%2FAbort_Delta+Heavy_192.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2F21st+Century+%28Feat.+Cabbie%29_Tantrum+Desire_192.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2F03+Twerk+feat.+Yo+Majesty+%28Sub+Focus+Remix%29.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2FAbort_Delta+Heavy_192.mp3
http://example.s3.amazonaws.com/

So annoying i only want it to show.

 http://example.s3.amazonaws.com/Music%2Fdnb%2FAbort_Delta+Heavy_192.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2F03+Twerk+feat.+Yo+Majesty+%28Sub+Focus+Remix%29.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2F21st+Century+%28Feat.+Cabbie%29_Tantrum+Desire_192.mp3

Because above doesnt have any duplicate values i have tried so much array_unique hasnt worked for me can someone please help?

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回忆追雨的时光 2024-10-23 05:14:21

您可以使用关联数组来检查它是否已经输出。

$outputted = array();

使用 $furl 作为键。

foreach (array_reverse($turn) as $value) { 

    $furl = "http://example.s3.amazonaws.com/".urlencode($value['tune_name']);

    if (isset($outputted[$furl])) {
        continue;
    }

    echo $furl;

    $outputted[$furl] = true;

}

You can use an associative array to check if it's already outputted.

$outputted = array();

Use $furl as a key.

foreach (array_reverse($turn) as $value) { 

    $furl = "http://example.s3.amazonaws.com/".urlencode($value['tune_name']);

    if (isset($outputted[$furl])) {
        continue;
    }

    echo $furl;

    $outputted[$furl] = true;

}

回复收藏 0 原文

云裳 2024-10-23 05:14:21

没问题。试试这个：

function filter($val)
{
    static $base=array();
    if(in_array($val,$base))return false;
    $base[]=$val;
    return true;
}
array_filter($arr,"filter");

它将从数组 $arr 中删除所有重复的值。

No problem. Try this:

function filter($val)
{
    static $base=array();
    if(in_array($val,$base))return false;
    $base[]=$val;
    return true;
}
array_filter($arr,"filter");

It will remove any duplicate values from the array $arr.

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泪之魂 2024-10-23 05:14:21

尝试更改

array_reverse($turn)

为

array_unique(array_reverse($turn))

这样

foreach (array_unique(array_reverse($turn)) as $value) { 
    $furl = "http://example.s3.amazonaws.com/".urlencode($value['tune_name']);
    echo $furl;
}

try changing

array_reverse($turn)

array_unique(array_reverse($turn))

so it looks like this

foreach (array_unique(array_reverse($turn)) as $value) { 
    $furl = "http://example.s3.amazonaws.com/".urlencode($value['tune_name']);
    echo $furl;
}

回复收藏 0 原文

妄断弥空 2024-10-23 05:14:21

也许你可以使用 array_unique 它会过滤掉所有重复的值，例如：

$turn = $_SESSION['value'];

foreach (array_unique(array_reverse($turn)) as $value) { 

$furl = "http://example.s3.amazonaws.com/".urlencode($value['tune_name']);

echo $furl;

}

结果应该是：

http://example.s3.amazonaws.com/Music%2Fdnb%2FAbort_Delta+Heavy_192.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2F03+Twerk+feat.+Yo+Majesty+%28Sub+Focus+Remix%29.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2F21st+Century+%28Feat.+Cabbie%29_Tantrum+Desire_192.mp3

maybe you can use array_unique it filters out all duplicated values like:

$turn = $_SESSION['value'];

foreach (array_unique(array_reverse($turn)) as $value) { 

$furl = "http://example.s3.amazonaws.com/".urlencode($value['tune_name']);

echo $furl;

}

result should be:

http://example.s3.amazonaws.com/Music%2Fdnb%2FAbort_Delta+Heavy_192.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2F03+Twerk+feat.+Yo+Majesty+%28Sub+Focus+Remix%29.mp3
http://example.s3.amazonaws.com/Music%2Fdnb%2F21st+Century+%28Feat.+Cabbie%29_Tantrum+Desire_192.mp3

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