About the paging code of text guestbook_PHP tutorial

//When writing a file, use "|||" to separate each record, and "||" to separate each field in the record
//For example, record one is represented as $str1= $name."||".$pass."||".$title."||".$message."||".…………
//Then use it when connecting record one and record two, $str=$str1."|||".$str2."|||.......
//The final generated file is as follows
//Flying Fox||450948643||This is the theme|| This is the message content||1|||Flying Fox||450948643||This is the topic||This is the message content||2|||Flying Fox||450948643||This is the topic||This is the message content|| 3|||Flying Fox||450948643||This is the topic||This is the message content||4|||Flying Fox||450948643||This is the topic||This is the message content||5|||Flying Fox ||450948643||This is the topic||This is the message content||6|||Flying Fox||450948643||This is the topic||This is the message content||7|||Flying Fox||450948643||This is the topic||This is the message content||8|||Flying Fox||450948643||This is the topic||This is the message content||9|||Flying Fox||450948643||This is the topic||This is Message content||10|||Flying Fox||450948643||This is the topic||This is the message content||11|||Flying Fox||450948643||This is the topic||This is the message content||12| ||Flying Fox||450948643||This is the topic||This is the message content||13|||Flying Fox||450948643||This is the topic||This is the message content||14|||Flying Fox|| 450948643||This is the topic||This is the message content||15|||Flying Fox||450948643||This is the topic||This is the message content||16|||Flying Fox||450948643||This is the topic ||This is the message content||17|||Flying Fox||450948643||This is the topic||This is the message content||18|||Flying Fox||450948643||This is the topic||This is the message content ||19|||Flying Fox||450948643||This is the topic||This is the message content||20|||Flying Fox||450948643||This is the topic||This is the message content||21||| Flying Fox||450948643||This is the topic||This is the message content||22|||Flying Fox||450948643||This is the topic||This is the message content||23|||
//Then Start fetching the data in the file, the program list is as follows
$end="|||"; //Record separator, depending on the symbol used when writing the file
$mid="||"; // Field delimiter, same as above
$temp=file("messageboard.info"); //Read the file content into the array
$temp=join("",$temp); //The array to be read Become a string
$mess=explode($end,$temp); //Split the record
$num=count($mess); //Calculate the number of split string array elements, which is the record Number
if (!$dpage) $dpage=1; //Storage the current page number
$row=15; //The number of rows you want to display on each page
if ($num/$row= = Floor ($ NUM/$ Row) $ page = $ num/$ row; // See if you can get an integer, you can take
Else if ($ num/$ row & gt; = Floor ($ num/$ $ ($ num/$ row)) $page=floor($num/$row)+1; //If the total number divided by the number of rows per page is greater than the number of requests, round it up and add one.
else if ($num/$row<=floor($num/$row)) $page=floor($num/$row); //If it is smaller than rounding, round it up
$minnum =($dpage-1)*$row; //The current page starts fetching records from this number
$maxnum=$row*$dpage; $minnum;$i<$maxnum;$i++)
{
$message=explode($mid,$mess[$i]); //Split out the fields in the record
$num1=count ($ Message); // Calculate the number of elements in the array to control the loop
for ($ j = 0; $ j & lt; $ num1; $ j ++)
{
echo $ message [$ j] ." "; //Display one element in the array at a time.
                                                                                                                                                                             Two pages, and if you are currently on the first page
{ $paged=$dpage+1; echo "Previous pageNext page
"; }
else if ($page>=2&&$dpage>=$page) //If the total number of pages is greater than two pages , and the current page is less than the total number of pages
{ $pageu=$dpage-1; echo "Previous pageNext page
"; }
else if ($page>=2&&$dpage>=1&&$dpage<$page) // If the total number of pages is greater than two pages, and the current page is greater than one and less than the total number of pages
{ $pageu=$dpage-1;$paged=$dpage+1;echo "Previous page　Previous page< br>";}
//If there is only one page
else echo "Previous pagePrevious page
";
?>

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truehttp: //www.bkjia.com/PHPjc/316272.htmlTechArticle? //Use ||| to separate each record when writing files, || is used to separate records Each field in //For example, record one is expressed as $str1=$name.||.$pass.||.$title.||.$message.||.……… //Then connect...