Long article page-php Tutorial

Long article pagination

Long article pagination Error_reporting (E_ALL ^ E_NOTICE ); If ($ _ GET ['Page'] = "") {$ _ GET ['Page'] = 1 ;}; // determines whether the variable value is null. ?>       Function unhtml ($ content) {// define the name of the custom function $ Content = htmlspecialchars ($ content); // Convert Special characters in text $ Content = str_replace (chr (13 )," ", $ Content); // replace the line break in the text $ Content = str_replace (chr (32), "", $ content); // replace $ Content = str_replace ("[_ [", "<", $ content); // replace the greater than sign in the text $ Content = str_replace (") _)", ">", $ content); // replace the minor sign in the text $ Content = str_replace ("| _ |", "", $ content); // replace spaces in the text Return trim ($ content); // delete spaces at the beginning and end of the text } // Define a function msubstr () used to intercept a string () Function msubstr ($ str, $ start, $ len) {// $ str indicates the string, $ start indicates the start position of the string, and $ len indicates the length. $ Strlen = $ start + $ len; // use $ strlen to store the total length of the string (from the starting position of the string to the total length of the string) For ($ I = 0; $ I <$ strlen; $ I ++) {// read strings cyclically using the for statement If (ord (substr ($ str, $ I, 1)> 0xa0) {// if the ASCII order value of the first byte in the string is greater than 0xa0, it is expressed as a Chinese character $ Tmpstr. = substr ($ str, $ I, 2); // Extract two characters each time and assign them to the variable $ tmpstr, which is equal to one Chinese character. $ I ++; // variable auto-Increment 1 } Else {// if it is not a Chinese character, a character is taken out each time and assigned to the variable $ tmpstr $ Tmpstr. = substr ($ str, $ I, 1 );} } Return $ tmpstr; // output string } If ($ _ GET ['Page']) { $ Counter = file_get_contents ("file/file.txt "); $ Length = strlen (unhtml ($ counter )); $ Page_count = ceil ($ length/1050 ); $ C = msubstr ($ counter, 0, ($ _ GET ['Page']-1) * 1050 ); $ C1 = msubstr ($ counter, 0, $ _ GET ['Page'] * 1050 ); Echo substr ($ c1, strlen ($ c), strlen ($ c1)-strlen ($ c )); } ?>   Page: / Page Paging: If ($ _ GET ['Page']! = 1 ){ Echo "homepage "; Echo "previous page "; } If ($ _ GET ['Page'] <$ page_count ){ Echo "next page "; Echo "last page "; } ?>