PHP開發(fā)新聞管理系統(tǒng)之添加功能的實(shí)現(xiàn)
修改功能的實(shí)現(xiàn),我們來看以下流程圖
下面我們來看以下添加頁的代碼:news.php
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> <style type="text/css"> *{margin:0px;padding:0px;} body{background:#ccc;} .add{width:450px;height:280px;background:#eee;float:left;} .cont{width:500px;height:350px;margin-top:5px;margin-left:5px;} form{margin-left:10px;padding-top:30px;} .sub{width:100px;height:40px;border:1px solid #ccc;} .sub:hover{background:#f90} </style> </head> <body> <div class="add"> <div class="cont"> <form method="post" action="addnews.php"> 標(biāo)題:<input type="text" name="title"></br></br> 內(nèi)容:<textarea cols="50" rows="5" name="content"></textarea></br></br> <input type="submit" value="添加" class="sub"> </form> </div> </div> </body> </html>
如上代碼可以看到,表單提交到addnews.php文件中
下面我們來看以下addnews.php文件的代碼:
首先我們要連接數(shù)據(jù)庫,添加,是從表單獲取信息添加到數(shù)據(jù)庫中,所以我們要連接數(shù)據(jù)庫
代碼如下:
????header("Content-type: text/html; charset=utf-8");//設(shè)置編碼
?? ?$con =@mysql_connect("localhost","root","root") or die("數(shù)據(jù)庫連接失敗");
?? ?mysql_select_db('news') or die("指定的數(shù)據(jù)庫不能打開");
?? ?mysql_query("set names utf8");//設(shè)置數(shù)據(jù)庫的字符集
然后獲取表單信息:
????$title = $_POST['title'];
?? ?$content = $_POST['content'];
?? ?$messtime = time();
在對(duì)數(shù)據(jù)庫添加之前,我們先要判斷一下,文本框的標(biāo)題和內(nèi)容是不是為空,如果為空,我們給出提示,代碼如下:
????if(empty($title)){
?? ??? ?echo "<script>alert('請(qǐng)輸入標(biāo)題');history.go(-1);</script>";
?? ?}elseif(empty($content)){
?? ??? ?echo "<script>alert('請(qǐng)輸入內(nèi)容');history.go(-1);</script>";
?? ?}
當(dāng)內(nèi)容不為空時(shí),我們才可以往數(shù)據(jù)庫添加內(nèi)容,代碼如下:
????????$sql = "insert into new (title,content,messtime) values('$title','$content','$messtime')";
?? ??? ?$result =mysql_query($sql);
?? ??? ?if($result){
?? ??? ??? ?echo "<script>alert('添加文章成功');location.href='newlist.php'</script>";
?? ??? ?}else{
?? ??? ??? ?echo "<script>alert('添加文章失敗');history.go(-1);</script>";
?? ??? ?}
完整源碼如下:
<?php //鏈接數(shù)據(jù)庫 header("Content-type: text/html; charset=utf-8");//設(shè)置編碼 $con =@mysql_connect("localhost","root","root") or die("數(shù)據(jù)庫連接失敗"); mysql_select_db('news') or die("指定的數(shù)據(jù)庫不能打開"); mysql_query("set names utf8");//設(shè)置數(shù)據(jù)庫的字符集 //添加操作 $title = $_POST['title']; $content = $_POST['content']; $messtime = time(); if(empty($title)){ echo "<script>alert('請(qǐng)輸入標(biāo)題');history.go(-1);</script>"; }elseif(empty($content)){ echo "<script>alert('請(qǐng)輸入內(nèi)容');history.go(-1);</script>"; }else{ $sql = "insert into new (title,content,messtime) values('$title','$content','$messtime')"; $result =mysql_query($sql); if($result){ echo "<script>alert('添加文章成功');location.href='newlist.php'</script>"; }else{ echo "<script>alert('添加文章失敗');history.go(-1);</script>"; } } ?>