PHP paging class (imitating Google)-Interview question answers_PHP tutorial

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 dizzy for a long time.
In the end, there was no error in the test program, but it just couldn’t be displayed normally. Later (after returning home), I checked and found out that the statement: for($i=0;$i++;$i<9) was written incorrectly, so I made up my mind. Write it again, so you 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 Page 1..12 13 14 15 [16] 17 18 19 20 ...100 Next page Last page
First page Previous page 1..92 93 94 95 96 97 98 [99] 100

Use Method:
$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 last page
*/

public $allPage; //Total number of pages
public $allRocords; //Total Number of records
public $perPage; //Number of records per page
public $showPagesNo; //Display the total number of pages in the paging bar. There are 11 in the display style.
public $currentPage; //Current page
public $urlModel; //Url link style

public $startHidden; //When 1... appears, the page number starts to hide the middle page
public $endHidden; //When...100 appears The number of pages ends and the middle page is hidden

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 plan 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{
$content .= '< a href="'.$this->getUrl($j).'">'.$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{
$content .= ''.$j.' ' ;
}
}
}
$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;
}
}
?>

http://www.bkjia.com/PHPjc/320481.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/320481.htmlTechArticle笔试回答的不太好，特别是JS部分，也是许久都没复习的原因。 上机题目是要写一个仿google分页的类，当要取类似9/2的最大整数，却怎么也...

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