Extra long text paging display function implemented in PHP
This article mainly introduces the paging display function of ultra-long text implemented by PHP, involving PHP's calculation, interception, traversal and other related operation skills for strings. It can realize the paging display function of ultra-long text. Friends who need it can Refer to the following
The example of this article describes the paging display function of ultra-long text implemented in PHP. Share it with everyone for your reference, the details are as follows:
1. Code
1, index.php
<?php if ($_GET=="") {$_GET=1;}; include("function.php");?> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>超长文本的分页显示</title> </head> <style type="text/css"> <!-- body { margin-left: 0px; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; } a:link { text-decoration: none; } a:visited { text-decoration: none; } a:hover { text-decoration: none; } a:active { text-decoration: none; } .STYLE3 {color: #333333; font-size: 13px; } --> </style> <body> <table width="876" height="638" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td width="343" height="159"> </td> <td width="489"> </td> <td width="44"> </td> </tr> <tr> <td height="245"> </td> <td align="center" valign="top"><table width="480" border="0" cellspacing="0" cellpadding="0"> <tr> <td height="22" colspan="2"> <span class="STYLE3"> <?php //读取超长文本中的数据,实现超长文本中数据的分页显示 if($_GET){ $counter=file_get_contents("file/file.txt"); $length=strlen($counter); $page_count=ceil($length/950); $c=msubstr($counter,0,($_GET-1)*950); $c1=msubstr($counter,0,$_GET*950); echo substr($c1,strlen($c),strlen($c1)-strlen($c)); } ?> </span> </td> </tr> <tr> <td width="202" height="22"><span class="STYLE3">页次:<?php echo $_GET;?> / <?php echo $page_count;?> 页 </span></td> <td width="278"><span class="STYLE3">分页: <?php if($_GET!=1){ echo "<a href=index.php?page=1>首页</a> "; echo "<a href=index.php?page=".($_GET-1).">上一页</a> "; } if($_GET<$page_count){ echo "<a href=index.php?page=".($_GET+1).">下一页</a> "; echo "<a href=index.php?page=".$page_count.">尾页</a>"; } ?> </span></td> </tr> </table> </td> <td> </td> </tr> <tr> <td height="234"> </td> <td> </td> <td> </td> </tr> </table> </body> </html>
2 , function.php
<?php //定义一个用于截取一段字符串的函数msubstr() function msubstr($str,$start,$len){ //$str指的是字符串,$start指的是字符串的起始位置,$len指的是长度。 $strlen=$start+$len; //用$strlen存储字符串的总长度(从字符串的起始位置到字符串的总长度) for($i=0;$i<$strlen;$i++){ //通过for循环语句,循环读取字符串 if(ord(substr($str,$i,1))>0xa0){ //如果字符串中首个字节的ASCII序数值大于0xa0,则表示为汉字 $tmpstr.=substr($str,$i,2); //每次取出两位字符赋给变量$tmpstr,即等于一个汉字 $i++; //变量自加1 }else{ //如果不是汉字,则每次取出一位字符赋给变量$tmpstr $tmpstr.=substr($str,$i,1); } } return $tmpstr; //输出字符串 } ?>
2. Running results
phprealnowreport (jpgraph plug-inrealnow)
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