PHP membangunkan sistem peminjaman buku mudah dan kod pelaksanaan fungsi peminjaman buku lengkap

Perkenalkan fail pangkalan data config.php

<?php include("config.php");?>

Buat fail kod peminjaman buku yang lengkap jieshu.php.

rreeee

Meneruskan pembelajaran

fail baharu

<?php include("config.php");?> <html> <head> <meta charset="UTF-8"> <title>借书功能页</title> </head> <body> <?php // 如果图书编号没填写，提示用户 $book_id = $_GET['book_id']; if ($book_id==""){ //echo "<script language=javascript>alert('编号不正确');window.location='index.php'</script>"; exit(); } else { ?> <?php // 借书 // 查看用户ID是否已填 if ($_SESSION['id']==""){ //echo "<script language=javascript>alert('您还没有登陆');window.location='landing.php'</script>"; exit(); }else{ // 可以正常借书，记录之 // 获得当前日期 $now = date("Y-m-d,H-i-m"); $lendsql="INSERT INTO lend(book_id, book_title, lend_time, user_id) values('$book_id','$title','$now','".$_SESSION['id']."')"; mysqli_query($link,$lendsql); // 借出后需要在该书记录中库存剩余数减一 mysqli_query($link,"update yx_books set leave_number=leave_number-1 where id='$book_id'"); //echo "<script language=javascript>alert('借阅完成');window.location='index.php'</script>"; ?> <?php } } ?> </body> </html>

serahkan Tetapkan Semula Kod

Operasi automatik