Développement PHP d'un système de gestion backend de livre simple, code complet pour la fonction de modification de mot de passe
Définissez une page pour déterminer si l'administrateur est connecté. Fichier ly_check.php
<?php require_once("config.php"); //引入数据库文件 if($_SESSION["admin"]=="") { echo "<script language=javascript>alert('请重新登陆!');window.location='login.php'</script>"; } ?>
L'instruction require_once est exactement la même que l'instruction require La seule différence est que PHP vérifiera si le fichier a. Si tel est le cas, il ne sera plus contenu.
Mettez le style CSS dans un fichier css.CSS et appelez-le plus tard dans le fichier.
<style> .table{ border: 1px solid #CAF2FF;/*边框颜色*/ margin-top: 5px; margin-bottom: 5px; background:#a8c7ce; } .td_bgf { background:#d3eaef; color:#000000; } .td_bg { background:#ffffff; color:#344b50; } .ACT_btn { height:26px; width:94px; cursor:hand; border:solid 0 #111; font-size: 12px; } .bg_tr { font-family: "微软雅黑,Verdana, 新宋体"; color:#e1e2e3;/*标题字体色*/ font-size:12px; font-weight:bolder; background:#353c44;/*标题背景色*/ line-height: 22px; } td { color:#1E5494; font-size:12px; line-height: 18px; } .tdbg1 { background:#F9F9F9; } .tdbg { BACKGROUND: #ffffff; } .top_link{text-decoration:none;font-size:14px;color:#FFDED2;height:0;filter:dropshadow(offX=1,offY=1,color=BD3400);} A.top_link:link{text-decoration:none;font-size:14px;color:#FFDED2;height:0;filter:dropshadow(offX=1,offY=1,color=BD3400);} A.top_link:visited{text-decoration:none;font-size:14px;color:#FFDED2;height:0;filter:dropshadow(offX=1,offY=1,color=BD3400);} A.top_link:active{text-decoration:underline;font-size:14px;color:#fff;height:0;filter:dropshadow(offX=1,offY=1,color=BD3400);} A.top_link:hover{text-decoration:underline;font-size:14px;color:#fff;height:0;filter:dropshadow(offX=1,offY=1,color=BD3400);} .topbar {color:#ffffff} .topbar a:link,.topbar a:visited{color:#ffffff;} .topbar a:hover{background:#ccffcc; display:block; height:26px; padding-top:6px; color:#000000; text-decoration:none} #table2 { width:100%; height:30px; border-bottom : 1px solid #fff; background-color: #6E4000; } .titledaohang { FONT-SIZE: 12px; COLOR: #551C02; font-weight:bolder; FONT-FAMILY: '微软雅黑,宋体' } .Leftback { background:#865802; } .leftframetable{ border: 1px solid #4C3500; margin-top: 3px; margin-bottom: 3px; background:#FDF6E6; } </style>
Ce qui suit montre le code complet permettant à l'administrateur de modifier le mot de passe de connexion de la page ly_pwd.php
<?php require_once('ly_check.php'); //引入判断管理员是否登录文件 ?> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>管理员密码修改</title> <!-- 引入CSS样式文件 --> <link href="css.css" rel="stylesheet" type="text/css"> </head> <body> <?php $password = $_SESSION["pwd"]; $SQL = "SELECT * FROM admin where password='$password'"; $rs = mysqli_query($link,$sql); $rows = mysqli_fetch_assoc($rs); $submit = isset($_POST["Submit"])?$_POST["Submit"]:""; if($submit) { if($rows["password"]==$_POST["password"]) { $password2=$_POST["password2"]; $SQL = "UPDATE admin SET password='$password2' where id=1"; mysqli_query($link,$sql); echo "<script>alert('修改成功,请重新进行登陆!');window.location='login.php'</script>"; exit(); } else ?> <?php { ?> <script> alert("原始密码不正确,请重新输入") //location.href="li_pwd.php"; </script> <?php } } ?> <table cellpadding="3" cellspacing="1" border="0" width="100%" class="table" align=center> <form name="renpassword" method="post" action=""> <tr> <th height=25 colspan=4 align="center" class="bg_tr">更改管理密码</th> </tr> <tr> <td width="40%" align="right" class="td_bg">用户名:</td> <td width="60%" class="td_bg"><?php echo $rows["username"] ?></td> </tr> <tr> <td align="right" class="td_bg">原密码:</td> <td class="td_bg"><input name="password" type="password" id="password" size="20"></td> </tr> <tr> <td align="right" class="td_bg">新密码:</td> <td class="td_bg"><input name="password1" type="password" id="password1" size="20"></td> </tr> <tr> <td align="right" class="td_bg">确认密码:</td> <td class="td_bg"><input name="password2" type="password" id="password2" size="20"></td> </tr> <tr> <td colspan="2" align="center" class="td_bg"> <input class="button" onClick="return check();" type="submit" name="Submit" value="确定更改"> </td> </tr> </form> </table> </body> </html> <script type="text/javascript"> <!-- function checkspace(checkstr) { var str = ''; for(i = 0; i < checkstr.length; i++) { str = str + ' '; } return (str == checkstr); } function check() { if(checkspace(document.renpassword.password.value)) { document.renpassword.password.focus(); alert("原密码不能为空!"); return false; } if(checkspace(document.renpassword.password1.value)) { document.renpassword.password1.focus(); alert("新密码不能为空!"); return false; } if(checkspace(document.renpassword.password2.value)) { document.renpassword.password2.focus(); alert("确认密码不能为空!"); return false; } if(document.renpassword.password1.value != document.renpassword.password2.value) { document.renpassword.password1.focus(); document.renpassword.password1.value = ''; document.renpassword.password2.value = ''; alert("新密码和确认密码不相同,请重新输入"); return false; } document.admininfo.submit(); } //--> </script>