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一个产品，我试图制作＆＃34; prev＆＃34;和＆＃34; next＆＃34;将链接到阵列中相邻产品的按钮。我的PHP技能很简陋，而且我试图用prev（）和next（）函数来完成这项任务是没有运气的。找到数组中相邻元素的最简单方法是什么？ （如果我在＆＃34;艺术家＆＃34;页面上我将如何链接，＆＃34; Archery＆＃34;和＃34;羽毛球。＆＃34;）
答案 0 :(得分：1)
array yp_next（string $ domain，string $ map，string $ key） 返回指定键后命名映射中的下一个键值对。
答案 1 :(得分：1)
您可以遍历数组以查找当前键，然后再搜索一个元素。一个经过测试的例子：
$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 = $key; // store this iteration's key for possible use in the next iteration
}
在此脚本的末尾，$ prev和$ next将包含上一个/下一个项的键或者为false（如果找不到当前项或我们在开头/结束时）数组，没有上一个/下一个可用）。
答案 2 :(得分：1)
根据您的阵列数据，您可以使用以下功能。我使用array_keys（）函数创建一个只包含初始数组键的数组，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 $s;
}
您可以使用以下功能：
echo custom_array_pagination($products);
答案 3 :(得分：0)
听起来你需要的是javascript。它可以在客户端切换产品，因此您可以从for循环中存储变量，当单击按钮时，您可以调用函数将其切换到下一个
答案 4 :(得分：0)
您不能在关联数组上执行next（）和prev（）。你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)
);
您仍然可以遍历此结构并从键＆＃34;名称＆＃34;获取当前项目的名称。