如何在多维PHP数组中获得next（）？

我有一个如下所示的数组：

$products = array();

$products["Archery"] = array(
    "name" => "Archery",
    "img" => "img/wire/100-Archery.jpg",
    "desc" => "Archer aiming to shoot",
    "prices" => array($price1,$price3),
    "paypal" => $paypal2,
    "sizes" => array($size1, $size2)
);
$products["Artist"] = array(
    "name" => "Artist",
    "img" => "img/wire/101-Artist.jpg",
    "desc" => "Artist with palette & easel",
    "prices" => array($price3,$price6),
    "paypal" => $paypal5,
    "sizes" => array($size1, $size2)
);
$products["Badminton"] = array(
    "name" => "Badminton",
    "img" => "img/wire/102-Badminton.jpg",
    "desc" => "About to hit bird above head",
    "prices" => array($price1,$price3),
    "paypal" => $paypal2,
    "sizes" => array($size1, $size2)
);
$products["Baseball-Bat-Stance"] = array(
    "name" => "BASEBALL -Bat - Stance",
    "img" => "img/wire/103a-Baseball-Stance.jpg",
    "desc" => "Waiting for pitch",
    "prices" => array($price1,$price3),
    "paypal" => $paypal2,
    "sizes" => array($size1, $size2)
);
$products["Baseball-Bat-Swing"] = array(
    "name" => "BASEBALL - Bat - Swing",
    "img" => "img/wire/103b-Baseball-Swing.jpg",
    "desc" => "Just hit ball",
    "prices" => array($price1,$price3),
    "paypal" => $paypal2,
    "sizes" => array($size1, $size2)
);

我有一个页面可以从这个数组中加载单个产品，我正在尝试创建“prev”和“next”按钮，这些按钮将链接到数组中相邻的产品。我的PHP技能还很初级，我还没有用prev（）和next（）函数完成这项工作。查找阵列中相邻元素的最简单方法是什么？（如果我在“艺术家”页面，我将如何链接到“射箭”和“羽毛球”）

array yp\u next（string$domain，string$map，string$key） 返回指定键之后命名映射中的下一个键值对

---

听起来你需要的是javascript。它将能够在客户端切换产品，因此您可以存储for循环中的变量，当单击按钮时，您可以调用函数将其切换到下一个

您可以遍历数组以查找当前键，然后再执行一个元素。一个经过测试的示例：

$current_page = 'Artist'; // as an example

$prev = $next = false; // the keys you're trying to find

$last = false; // store the value of the last iteration in case the next element matches

// flag if we've found the current element so that we can store the key on the next iteration
// we can't just use $last here because if the element is found on the first iteration it'll still be false
$found = false;

foreach ($products as $key => $value) {

    // if we found the current key in the previous iteration
    if ($found) {
        $next = $key;
        break; // no need to continue
    }

    // this is the current key
    if ($key == $current_page) {
        $found = true;
        $prev = $last;
    }

    $last = $key; // store this iteration's key for possible use in the next iteration
}

在此脚本末尾，$prev和$next将包含上一个/下一个项的键，或者为false（如果未找到当前项，或者我们位于数组的最开始/结尾，并且没有可用的prev/next）。

您不能在关联数组上执行next（）和prev（）。您需要的是另一个数组结构，如下所示：

$products = array();

$products[0] = array(
    "name" => "Archery",
    "img" => "img/wire/100-Archery.jpg",
    "desc" => "Archer aiming to shoot",
    "prices" => array($price1,$price3),
    "paypal" => $paypal2,
    "sizes" => array($size1, $size2)
);
$products[1] = array(
    "name" => "Artist",
    "img" => "img/wire/101-Artist.jpg",
    "desc" => "Artist with palette & easel",
    "prices" => array($price3,$price6),
    "paypal" => $paypal5,
    "sizes" => array($size1, $size2)
);
$products[2] = array(
    "name" => "Badminton",
    "img" => "img/wire/102-Badminton.jpg",
    "desc" => "About to hit bird above head",
    "prices" => array($price1,$price3),
    "paypal" => $paypal2,
    "sizes" => array($size1, $size2)
);
$products[3] = array(
    "name" => "BASEBALL -Bat - Stance",
    "img" => "img/wire/103a-Baseball-Stance.jpg",
    "desc" => "Waiting for pitch",
    "prices" => array($price1,$price3),
    "paypal" => $paypal2,
    "sizes" => array($size1, $size2)
);
$products[4] = array(
    "name" => "BASEBALL - Bat - Swing",
    "img" => "img/wire/103b-Baseball-Swing.jpg",
    "desc" => "Just hit ball",
    "prices" => array($price1,$price3),
    "paypal" => $paypal2,
    "sizes" => array($size1, $size2)
);

echo custom_array_pagination($products);

---

您仍然可以遍历此结构并从键“name”获取当前项的名称。

基于数组数据，您可以使用以下函数。我使用array_keys（）函数创建了一个仅包含初始数组的键的数组，所有工作都是使用新数组完成的

function custom_array_pagination($data = array()) {

    $current_page = 'Baseball-Bat-Swing';    //$current_page = $_GET['product']; //Change to this when you have set up your final code
    $data_keys = array_keys($data);  //This is the array all the work is done

    $s = '';

    if (!in_array($current_page, $data_keys)) {  //If there is no such element as the $_GET element in the array
        return $s;
    }

    $is_first = false;
    $is_last = false;
    $found_prev = false;
    $found_next = false;

    $next_text = '';

    if ($current_page == $data_keys[0]) {
        $is_first = true;
    }
    if ($current_page == end($data_keys)) {
        $is_last = true;
    }

    $s .= '<ul class="pagination">';

    if ($is_first) {    //If it is the first element then show only text
        $s .= '<li class="first">First'.'</li>';
    } else {
        $s .= '<li class="first"><a href="'.$data_keys[0].'">First</a>'.'</li>';
    }

    foreach($data_keys as $key => $value) {

        if ($is_first && !$found_prev) {   //If it is the first element then show only text
            $found_prev = true;
            $s .= '<li class="prev">Prev'.'</li>';
        } else {
            if (!$found_prev) { //If prev has not been found yet
                $prev = $data_keys[array_search($current_page, $data_keys) - 1];
                $found_prev = true;
                $s .= '<li class="prev"><a href="'.$prev.'">Prev</a>'.'</li>';
            }
        }

        if ($current_page == $value) {
            $s .= '<li class="current">'.$data[$value]['name'].'</li>';
        } else {
            $s .= '<li class="current"><a href="'.$value.'">'.$data[$value]['name'].'</a>'.'</li>';
        }

        if ($is_last && !$found_next) {   //If it is the last element then show only text
            $found_next = true;
            $next_text = '<li class="next">Next'.'</li>';
        } else {
            if (!$found_next) { //If next has not been found yet
                if ($value == $data_keys[count($data_keys) - 1]) {    //If this value is the last value in the table
                    $found_next = true;
                    $next = $data_keys[array_search($current_page, $data_keys) + 1];
                    $next_text = '<li class="next"><a href="'.$next.'">Next</a>'.'</li>';
                }
            }
        }

    }

    $s .= $next_text;

    if ($is_last) { //If it is the last element then show only text
        $s .= '<li class="last">Last</li>';
    } else {
        $s .= '<li class="last"><a href="'.$data_keys[count($data_keys) - 1].'">Last</a>'.'</li>';
    }

    return $s;

}

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我想您需要实现某种分页并使用url重写。另外，你应该使用MySQL数据库。@PedroLobito绝对应该使用数据库，我完全同意，这就足够了，直到我们能够实现一个数据库驱动的解决方案。我不会花时间在临时解决方案上。你可以知道你需要什么，但你必须为此安装一个扩展：除非我误解了，这与NIS域有关，而不是OP需要的，即使安装了扩展。