How to achieve php page number?
Page number display implementation in PHP
Effect:
Use it almost directly after taking it. pageNow #Current page, pageNumb #Total number of pages Just change the two variable assignment methods. Code in
<?php
########################################################################
#页码显示PHP脚本
#ora
#2019-04-22 19:49:57
#########################################################################
#$pageNumb = $arrlen /$contentNumbOnePage ; #总共页码数=内容数/每页内容数。
$pageNumb = 7;
if (is_float($pageNumb)) { #总共页码数 取整。
$pageNumb = (int)$pageNumb + 1;
}elseif (is_integer($pageNumb)) {
$pageNumb = $pageNumb;
}else $pageNumb = 1; #出错，但重新定义总页码数为1,而不是退出。
#$pageNow #当前页
#$_GET['page'] #url传递（请求）的页码。
if (!empty($_GET['page']) && is_integer($_GET['page']/1) ) { #is_integer($_GET['page']/1) ,除1以后才是整数... 此处有问题。待修正。
$pageNow = $page = $_GET['page'] ;
}else {$pageNow = $page = 1;} #没有请求页码，给予初始化为1.
#页码显示
#规则:必有首尾页，当前页前后页码相同且给定。其他页码用...表示。
/*
四种情况。难得解释清楚，感兴趣自己用一串数字掩饰一下。
比如：
1 23 ...777 ; 1 2 34...777 ;12 3 45...777 ; 1...23 4 56...777;1...234_235 <236> 237_238 ...777;
1 23 ...7 ; 1 2 34...7 ; 12 3 45...7 ;123 4 567;
1 23 ...5 ; 1 2 345; 12 3 45;
1 ... 234_235 <236> 237 ; 1 ... 235 236 <237> ;
1 2 <3> 4 ;
*/
#ye ma xian shi.
$jiange=2;#ye ma jian ge.
if (!is_integer($jiange) && $jiange<1){$jiange=2;}# jian ge bu xiao yu 1,qie wei zhengshu.
##########################################下面4个case是方法############################
#case 1
if ($pageNow - $jiange - 1 - 1 > 0 && $pageNumb -$jiange -1 -1 >$pageNow){ # 前面有首页1、$jiange定义的间隔页码、和它本身。
echo " <a href=\"?page=1\" >1</a> " ;
echo "<span class=\"extend\">...</span> ";
for ($num = $pageNow - $jiange ;$num<$pageNow;$num++){
echo "<a href=\"?page=$num\">$num</a> ";
}
echo "<span class=\"current\">$pageNow</span>"; #当前页
for ($num = $pageNow + 1 ; $num<=$pageNow + $jiange ;$num++){
echo "<a href=\"?page=$num\">$num</a> ";
}
$num = $pageNow + 1;
echo "<span class=\"extend\">...</span> ";
echo "<a href=\"?page=$pageNumb\"> $pageNumb</a>";
}
#case 2
if ($pageNow - $jiange - 1 - 1 <= 0 && $pageNumb -$jiange -1 -1 >$pageNow){ # 到首页的间隔页少于等于定义间隔值。前面的页码全输出。后连续输出间隔页码。
for($i=1;$i<=$pageNow + $jiange ;$i++){
if($i==$pageNow){
echo "<span class=\"current\">$pageNow</span>"; #当前页
}else {echo "<a href=\"?page=$i\"> $i</a>"; }
}
echo "<span class=\"extend\">...</span> ";
echo "<a href=\"?page=$pageNumb\"> $pageNumb</a>";
}
#case 3
if ($pageNow - $jiange - 1 - 1 > 0 && $pageNumb -$jiange -1 -1 <=$pageNow){
echo " <a href=\"?page=1\" >1</a> " ;
echo "<span class=\"extend\">...</span> ";
for ($num = $pageNow - $jiange ;$num<$pageNow;$num++){
echo "<a href=\"?page=$num\">$num</a> ";
}
echo "<span class=\"current\">$pageNow</span>"; #当前页
for ($num = $pageNow + 1 ; $num<=$pageNumb;$num++){
echo "<a href=\"?page=$num\">$num</a> ";
}
}
#case 4
if ($pageNow - $jiange - 1 - 1 <= 0 && $pageNumb -$jiange -1 -1 <=$pageNow){ #
for($i=1;$i<=$pageNumb ;$i++){
if($i==$pageNow){
echo "<span class=\"current\">$pageNow</span>"; #当前页
}else {echo "<a href=\"?page=$i\"> $i</a>"; }
}
#echo "<span class=\"extend\">...</span> ";
#echo "<a href=\"?page=$pageNumb\"> $pageNumb</a>";
}html format:
<?php
########################################################################
#页码显示PHP脚本
#ora
#2019-04-22 19:49:57
#########################################################################
#$pageNumb = $arrlen /$contentNumbOnePage ; #总共页码数=内容数/每页内容数。
$pageNumb = 7;
if (is_float($pageNumb)) { #总共页码数 取整。
$pageNumb = (int)$pageNumb + 1;
}elseif (is_integer($pageNumb)) {
$pageNumb = $pageNumb;
}else $pageNumb = 1; #出错，但重新定义总页码数为1,而不是退出。
#$pageNow #当前页
#$_GET['page'] #url传递（请求）的页码。
if (!empty($_GET['page']) && is_integer($_GET['page']/1) ) { #is_integer($_GET['page']/1) ,除1以后才是整数... 此处有问题。待修正。
$pageNow = $page = $_GET['page'] ;
}else {$pageNow = $page = 1;} #没有请求页码，给予初始化为1.
#页码显示
#规则:必有首尾页，当前页前后页码相同且给定。其他页码用...表示。
/*
四种情况。难得解释清楚，感兴趣自己用一串数字掩饰一下。
比如：
1 23 ...777 ; 1 2 34...777 ;12 3 45...777 ; 1...23 4 56...777;1...234_235 <236> 237_238 ...777;
1 23 ...7 ; 1 2 34...7 ; 12 3 45...7 ;123 4 567;
1 23 ...5 ; 1 2 345; 12 3 45;
1 ... 234_235 <236> 237 ; 1 ... 235 236 <237> ;
1 2 <3> 4 ;
*/
#ye ma xian shi.
$jiange=2;#ye ma jian ge.
if (!is_integer($jiange) && $jiange<1){$jiange=2;}# jian ge bu xiao yu 1,qie wei zhengshu.
#case 1
if ($pageNow - $jiange - 1 - 1 > 0 && $pageNumb -$jiange -1 -1 >$pageNow){ # 前面有首页1、$jiange定义的间隔页码、和它本身。
echo " <a href=\"?page=1\" >1</a> " ;
echo "<span class=\"extend\">...</span> ";
for ($num = $pageNow - $jiange ;$num<$pageNow;$num++){
echo "<a href=\"?page=$num\">$num</a> ";
}
echo "<span class=\"current\">$pageNow</span>"; #当前页
for ($num = $pageNow + 1 ; $num<=$pageNow + $jiange ;$num++){
echo "<a href=\"?page=$num\">$num</a> ";
}
$num = $pageNow + 1;
echo "<span class=\"extend\">...</span> ";
echo "<a href=\"?page=$pageNumb\"> $pageNumb</a>";
}
#case 2
if ($pageNow - $jiange - 1 - 1 <= 0 && $pageNumb -$jiange -1 -1 >$pageNow){ # 到首页的间隔页少于等于定义间隔值。前面的页码全输出。后连续输出间隔页码。
for($i=1;$i<=$pageNow + $jiange ;$i++){
if($i==$pageNow){
echo "<span class=\"current\">$pageNow</span>"; #当前页
}else {echo "<a href=\"?page=$i\"> $i</a>"; }
}
echo "<span class=\"extend\">...</span> ";
echo "<a href=\"?page=$pageNumb\"> $pageNumb</a>";
}
#case 3
if ($pageNow - $jiange - 1 - 1 > 0 && $pageNumb -$jiange -1 -1 <=$pageNow){
echo " <a href=\"?page=1\" >1</a> " ;
echo "<span class=\"extend\">...</span> ";
for ($num = $pageNow - $jiange ;$num<$pageNow;$num++){
echo "<a href=\"?page=$num\">$num</a> ";
}
echo "<span class=\"current\">$pageNow</span>"; #当前页
for ($num = $pageNow + 1 ; $num<=$pageNumb;$num++){
echo "<a href=\"?page=$num\">$num</a> ";
}
}
#case 4
if ($pageNow - $jiange - 1 - 1 <= 0 && $pageNumb -$jiange -1 -1 <=$pageNow){ #
for($i=1;$i<=$pageNumb ;$i++){
if($i==$pageNow){
echo "<span class=\"current\">$pageNow</span>"; #当前页
}else {echo "<a href=\"?page=$i\"> $i</a>"; }
}
#echo "<span class=\"extend\">...</span> ";
#echo "<a href=\"?page=$pageNumb\"> $pageNumb</a>";
}For more PHP-related knowledge, please visit PHP Tutorial!
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