PHP paging class imitates google-interview question answers

I didn’t answer the written test very well, especially the JS part, which is why I haven’t reviewed it for a long time.
The computer question is to write a class that imitates Google's paging. When I want to get the largest integer like 9/2, I can't remember the name of the function ceil, and I was confused for a long time.
In the end, there was no error in the test program, but it just couldn’t be displayed normally. After checking it later (after returning home), I found out that the statement: for($i=0;$i++;$i<9) was wrong, so I decided to rewrite it. Once, we have the following code:

Copy the code The code is as follows:

/*
The display style is as follows:
[1] 2 3 4 5 6 7 8 9 10 ...100 Next page Last page
Home page Previous page 1..12 13 14 15 [16] 17 18 19 20 ...100 Next page Last page
Home page Previous page 1..92 93 94 95 96 97 98 [99] 100
Usage:
$currentPage = $_GET['page']?$_GET['page ']:1;
$pagediv = new pagediv(500, 10, 11, $currentPage, 'test.php?page=');
$pagediv->show();
*/
class pagediv
{
public $part1;
public $part2;
public $part3;
public $part4;
public $part5;
/*
Split the following paging display:
Home Page Previous Page 1..12 13 14 15 [16] 17 18 19 20 ...100 Next page Last page
$part1 : Home page Previous page
$part2 : 1..
$part3 : 12 13 14 15 [16] 17 18 19 20
$part4 : ...100
$part5: Next page and last page
*/
public $allPage; //Total number of pages
public $allRocords; //Total number of records
public $perPage; //Number of records per page
public $showPagesNo; //Show paging There are 11 total page numbers in the column display style
public $currentPage; //Current page
public $urlModel; //Url link style
public $startHidden; //The number of pages when 1... starts to hide the middle page
public $endHidden; //The page number ends when...100 appears to hide the middle page
public function __construct($allRocords, $perPage, $showPagesNo, $currentPage, $urlModel){
$this->allRocords = $ allRocords;
$this->perPage = $perPage;
$this->showPagesNo = $showPagesNo;
$this->currentPage = $currentPage;
$this->urlModel = $urlModel;
$this- >allPage = $this->getAllPage();
$this->startHidden = $this->getInt(($this->showPagesNo)/2); //6
$this->endHidden = $this->allPage - $this->startHidden; //94
}
public function getUrl($_index = ''){
$_current = $_index;
if($_index == 'pre') $_current = $this->currentPage -1;
if($_index == 'next') $_current = $this->currentPage+1;
if($_index == '') $_current = $this ->allPage;
return $this->urlModel.$_current;
}
public function getAllPage(){
return $this->getInt($this->allRocords/$this->perPage);
}
public function getInt($_float){
$_int = $_float;
if( $_index = strpos($_float,'.') == true ){
$_int = substr($_float,0,$ _index);
$_int++;
}
//Alternative solution when ceil is not remembered
return $_int;
}
public function getPart1(){
$content = 'Homepage Previous page ';
if($this->currentPage <= $this->startHidden){
$content = '';
}
return $content;
}
public function getPart2(){
$content = '1 ';
$add = '';
if($this->currentPage > $this->startHidden ){
$add = '...';
}
if($this->currentPage == 1){
$content = '[1] ';
$add = '';
}
$part2 = $content.$add;
return $part2;
}
public function getPart3(){
$content = '';
if($this->currentPage <= $this->startHidden){
/ /[1] 2 3 4 5 6 7 8 9 10 ...100 Next page Last page
$long = $this->showPagesNo - 2;
for($i=0;$i<$long;$i++ ){
$j = $i+2;
if($j == $this->currentPage){
$content .= '['.$this->currentPage.'] ';
}else{
$content .= ''.$j.' ';
}
}
}elseif( $this->currentPage >= $this->endHidden ){
//Home page previous page 1..92 93 94 95 96 97 98 [99] 100
$long = $this->showPagesNo - 2;
$_start = $this->allPage - $long;
for($i=0;$i<$long;$i++){
$j = $_start + $i;
if($j == $ this->currentPage){
$content .= '['.$this->currentPage.'] ';
}else{
$content .= ''.$j.' ';
}
}
}else{
//Home Page Previous Page 1..12 13 14 15 [16] 17 18 19 20 ...100 Next page Last page
$long = $this->showPagesNo - 2;
$offset = $this->getInt($long/2) - 1;
$_start = $this-> currentPage - $offset;
for($i=0;$i<$long;$i++){
$j = $_start + $i;
if($j == $this->currentPage){
$ content .= '['.$this->currentPage.'] ';
}else{
$content .= ' ';
}
}
}
$part3 = $content;
return $part3;
}
public function getPart4(){
$content = ''.$this->allPage.' ';
$add = '';
if($this->currentPage < $this->endHidden){
$add = '...';
}
if($this->currentPage == $this->allPage){
$content = '['.$this->allPage.']';
$add = '';
}
$part4 = $add.$content;
return $part4;
}
public function getPart5(){
$content = '下页 尾页';
if($this->currentPage >= $this->endHidden){
$content = '';
}
return $content;
}
public function show(){
//判断非法
if(!is_numeric($this->currentPage) || $this->currentPage < 0 || $this->currentPage > $this->allPage){
print 'error:pageNo is flase';
return;
}
//总页数没有达到显示分页栏的总页码数，则全部显示
if($this->allPage < $this->showPagesNo){
$long = $this->allPage;
for($i=0;$i<$long;$i++){
$j = $i+1;
if($j == $this->currentPage){
$content .= '['.$this->currentPage.'] ';
}else{
$content .= ''.$j.' ';
}
}
print $content;
return;
}
$this->part1 = $this->getPart1();
$this->part2 = $this->getPart2();
$this->part3 = $this->getPart3();
$this->part4 = $this->getPart4();
$this->part5 = $this->getPart5();
print $this->part1.$this->part2.$this->part3.$this->part4.$this->part5;
}
}
?>

以上就介绍了 PHP 分页类模仿google-面试题目解答，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。