How to change password in php

php change password:

Recommended:php server

html code:

<div id="tbx"">
  <div id="xgmm" class="gnq">
   <br /><br />
   <div style="font-size:10px; color:#999; float:left;margin-left: 12%;">提示：确认修改密码后将跳转到登录页面重新登录</div>
   <div style="clear:both"></div>
   <br />
   <form action="xgmm.php" method="post" class="form-horizontal" role="form">
 
    <div class="form-group"><!--原始密码-->
     <label for="firstname" class="col-sm-3 control-label">请输入原始密码</label>
     <div class="col-sm-5">
      <input type="text" class="form-control" id="ysmm" placeholder="请输入原始密码">
     </div>
     <span class="col-sm-4 ts" id="ysmmts"></span>
    </div>
    <div class="form-group"><!--新密码-->
     <label for="lastname" class="col-sm-3 control-label">请输入新密码</label>
     <div class="col-sm-5">
      <input type="text" class="form-control" id="xmm" name="xmm" placeholder="请输入新密码">
     </div>
     <span class="col-sm-4 ts" id="xmmts"></span>
    </div>
    <div class="form-group"><!--确认新密码-->
     <label for="lastname" class="col-sm-3 control-label">请重新输入新密码</label>
     <div class="col-sm-5">
      <input type="text" class="form-control" id="qrxmm" name="qrxmm" placeholder="请重新输入新密码">
     </div>
     <span class="col-sm-4 ts" id="qrxmmts"></span>
    </div>
 
    <div class="form-group"><!--确认修改按钮-->
     <div class="col-sm-offset-2 col-sm-6">
      <button id="qrxg" type="submit" class="btn btn-primary">确认修改</button>
     </div>
    </div>
 
   </form>
  </div>
 </div>

jquery part

$("#ysmm").blur(function(){ysmm();});
 $("#xmm").keyup(function(){xmm();});
 function ysmm(){
  var a = true;
  var ysmm = $("#ysmm").val();
 
  if(ysmm==""){
   $("#ysmmts").html("您输入的原始密码为空！");
   a = false;
  }
  else{
   $.ajax({
    async:false,
    url:"ysmm.php",
    data:{ysmm:ysmm},
    type:"POST",
    dataType:"TEXT",
    success:function(data){
     if(data.trim()==0)
     {
      $("#ysmmts").html("");
     }
     else if(data.trim()==1)
     {
      $("#ysmmts").html("您输入的原始密码有误！");
 
      a = false;
     }
    }
   })
  }
  return a;
 
 }
 function xmm(){
  var xmm = $("#xmm").val();
  var b = true;
  $.ajax({
   async:false,
   url:"xmm.php",
   data:{xmm:xmm},
   type:"POST",
   dataType:"TEXT",
   success:function(data){
    //alert(data);
    if(data.trim()==0)
    {
     $("#xmmts").html("您输入的新密码弱爆啦！换一个吧");
     b = false;
    }
    else if(data.trim()==1)
    {
     $("#xmmts").html("您输入的新密码强度强强强！");
    }
    else if(data.trim()==2)
    {
     $("#xmmts").html("您输入的新密码强度强！");
    }
    else if(data.trim()==3)
    {
     $("#xmmts").html("您输入的新密码强度中！");
    }
    else if(data.trim()==4)
    {
     $("#xmmts").html("您输入的新密码强度中！");
    }
    else if(data.trim()==5)
    {
     $("#xmmts").html("您输入的新密码强度弱！");
    }
 
   }
 
  });
  return b;
 }
 
 //修改密码的确认修改按钮的对应事件
 $("#qrxg").click(function(){
  var qrxmm = $("#qrxmm").val();
  var xmm1 = $("#xmm").val();
  var ysmm1 = $("#ysmm").val();
 
  if(xmm1 != qrxmm)
  {
   $("#qrxmmts").html("您输入的新密码不一致！");
   return false;
  }
  if(xmm1=="" && ysmm1=="")
  {
   $("#ysmmts").html("您输入的原始密码为空！");
   $("#xmmts").html("您输入的新密码为空！");
   return false;
  }
  else if(xmm1=="" || ysmm1=="" )
  {
   if(xmm1=="")
   {
    $("#xmmts").html("您输入的新密码为空！");
    return false;
   }
   else if(ysmm1=="")
   {
    $("#ysmmts").html("您输入的原始密码为空！");
    return false;
   }
  }
  else if(xmm1==ysmm1)
  {
 
   $("#xmmts").html("您输入的新密码与原始密码相同！");
   return false;
  }
  else if(ysmm() && xmm())
  {
   return true;
  }
  else
  {
   return false;
  }
 
 });

Verification of the original password part ysmm.hpp

<?php
session_start();
include("DBDA.class.php");
$db = new DBDA();
 
if(!empty($_SESSION["uid"]))
{
 $num = $_SESSION["uid"];
 $sql = "select pwd from login where uid=&#39;{$uid}&#39; ";
 $res = $db->Query($sql);
}
 
if(!empty($_POST["ysmm"]))
{$ysmm = $_POST["ysmm"];
if($ysmm==$res[0][0])//输入的原始密码与当前登录者的原始密码相同
{
 echo 0; 
}
else
{
 echo 1; 
}
}

New password verification part xmm.php

<?php
if(!empty($_POST["xmm"]))
{   
  $str = $_POST["xmm"];
  if(strlen($str)<3)
  {echo 0;}
  else
  {
   if(preg_match("/[|*|.|=|+|-|]+/",$str) && preg_match("/[A-Z]+/",$str) && preg_match("/[a-z]+/",$str) && preg_match("/[0-9]+/",$str))
   {
    echo 1;
   }
   else if(preg_match("/[A-Z]+/",$str) && preg_match("/[a-z]+/",$str) && preg_match("/[0-9]+/",$str))
   {
    echo 2;
   }
   else if(preg_match("/[A-Z]+/",$str) && preg_match("/[0-9]+/",$str))
   {
    echo 3;
   }
   else if(preg_match("/[a-z]+/",$str) && preg_match("/[0-9]+/",$str))
   {
    echo 4;
   }
   else if(preg_match("/[0-9]+/",$str))
   {
    echo 5;
   }
  }
}

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