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Paging is a common feature in many websites and applications, especially when the data volume is large, paging can not only improve loading speed, but also enhance the user experience. In PHP, we can use the array_chunk function to easily achieve pagination effect. This article will introduce how to use array_chunk to control the amount of data displayed per page and effectively control the data display.
array_chunk is a function in PHP used to split an array into multiple small arrays. This function is ideal for use in paging systems, and can divide a large dataset into small subsets based on the specified number of pages.
array_chunk(array $array, int $length, bool $preserve_keys = false): array
$array : The original array to be split.
$length : The size of each subarray (i.e. the number displayed per page).
$preserve_keys : Whether to keep the key of the original array, the default is false .
<?php
// Sample data：Web link array
$links = [
"https://m66.net/page1",
"https://m66.net/page2",
"https://m66.net/page3",
"https://m66.net/page4",
"https://m66.net/page5",
"https://m66.net/page6",
"https://m66.net/page7",
"https://m66.net/page8",
"https://m66.net/page9",
"https://m66.net/page10",
];
// Number of displayed per page
$linksPerPage = 5;
// use array_chunk Functions split arrays into pages $linksPerPage Elements
$paginatedLinks = array_chunk($links, $linksPerPage);
// Assume that the current page is 2 Page
$currentPage = 2;
// 获取当前Page的链接数据
$currentLinks = $paginatedLinks[$currentPage - 1];
// 显示当前Page的数据
echo "1. {$currentPage} Page的链接：<br>";
foreach ($currentLinks as $link) {
echo $link . "<br>";
}
?>
We first define an array $links containing multiple web links.
Then set the number of links displayed per page $linksPerPage to 5.
Use the array_chunk function to split the original array $links into multiple small arrays that display up to 5 links per page, and save them in the $paginatedLinks variable.
Assuming the current page is page 2, the data of the current page is controlled through the $currentPage variable.
Get the data of the current page by accessing $paginatedLinks[$currentPage - 1] and display it.
1. 2 Page的链接：
https://m66.net/page6
https://m66.net/page7
https://m66.net/page8
https://m66.net/page9
https://m66.net/page10
Pagination is not just about displaying data, it also requires a pagination navigation to allow users to jump between different pages. Here is a simple example of how to implement paging navigation.
<?php
// Total data volume
$totalLinks = count($links);
// 计算总Page数
$totalPages = ceil($totalLinks / $linksPerPage);
// 显示分Page导航
echo "分Page导航：<br>";
for ($i = 1; $i <= $totalPages; $i++) {
echo "<a href='?page=$i'>1. $i Page</a> ";
}
?>
Calculate the total amount of data count($links) .
Use the ceil() function to calculate the total number of pages. If the total amount of data cannot be divisible by the number of each page, ceil() will round the result upwards.
Use the for loop to generate paging links, allowing users to jump to different pages.
分Page导航：
1. 1 Page 1. 2 Page 1. 3 Page 1. 4 Page
To let users know about the page they are currently on, the current page can be highlighted in the paging navigation. For example, the current page can be bolded or added with a different style.
<?php
echo "分Page导航：<br>";
for ($i = 1; $i <= $totalPages; $i++) {
if ($i == $currentPage) {
// 当前Page加粗显示
echo "<strong>1. $i Page</strong> ";
} else {
echo "<a href='?page=$i'>1. $i Page</a> ";
}
}
?>
分Page导航：
1. 1 Page 1. 2 Page 1. 3 Page 1. 4 Page
Through the array_chunk function, we can easily divide a large data set into multiple small arrays to achieve pagination display. This not only reduces the pressure on page loading, but also improves the user's browsing experience. Combined with paging navigation, users can easily jump to different pages and view required data. I hope this article can help you understand how to use the array_chunk function to implement the paging function and further improve your website performance.
