php实现简单的流程管理

流程管理，在各种系统中扮演很重要的地位，可以把设定好的流程放入系统中，规定好几个节点，只要所有节点都通过，就可以通过。

惯例，先看数据库：

我们首先做一个新建流程页面，先把节点做好

xinjian.php

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script src="../dist/js/jquery-1.11.2.min.js"></script>
</head>

<body>
<h1>新建流程</h1>

<div>
请选择节点人员：
<select id="user">
    <?php
    session_start();
    include("../fengzhuang/DBDA.class.php");
    $db = new DBDA();
    
    $sql = "select * from lc_users";
    $arr = $db->Query($sql);
    foreach($arr as $v)
    {
        echo "<option value='{$v[0]}'>{$v[2]}</option>";
    }
    ?>
</select>
<input type="button" value="添加节点" id="add" />
</div>
<br />
<div>
    <?php
    if(!empty($_SESSION["user"]))
    {
        $attr = $_SESSION["user"];
        foreach($attr as $k=>$v)
        {
            $sname = "select name from lc_users where uid='{$v}'";
            $name = $db->StrQuery($sname);
            echo "<div>{$k}--{$name}--<input type='button' value='删除' key='{$k}' class='del' /></div>";
        }
    }
    ?>
</div>
<br />
<div>请输入流程名称：<input type="text" id="name" /></div>
<br />
<input type="button" value="保存" id="btn" />


</body>
<script type="text/javascript">
//添加节点按钮加点击
$("#add").click(function(){
        var uid = $("#user").val();
        $.ajax({
            url:"chuli.php",
            data:{uid:uid,type:0},
            type:"POST",
            dataType:"TEXT",
            success: function(data){
                    window.location.href="xinjian.php";
                }
            });
    })
    
//给删除按钮加点击
$(".del").click(function(){
        var key = $(this).attr("key");
        $.ajax({
            url:"chuli.php",
            data:{key:key,type:1},
            type:"POST",
            dataType:"TEXT",
            success:function(data){
                window.location.href="xinjian.php";
                }
            });
    })
//给保存按钮加点击
$("#btn").click(function(){
        var name = $("#name").val();
        $.ajax({
            url:"chuli.php",
            data:{name:name,type:2},
            type:"POST",
            dataType:"TEXT",
            success:function(data){
                    alert("保存成功！");
                }
            });
    })
</script>
</html>

chuli.php

<?php
session_start();
include("../fengzhuang/DBDA.class.php");
$db = new DBDA();

$type = $_POST["type"];

switch($type)
{
    case 0:
        $uid = $_POST["uid"];
        if(empty($_SESSION["user"]))
        {
            $arr = array($uid);
            $_SESSION["user"] = $arr;
        }
        else
        {
            $arr = $_SESSION["user"];
            array_push($arr,$uid);
            $_SESSION["user"] = $arr;
        }
        break;
        
    case 1:
        $key = $_POST["key"];
        $arr = $_SESSION["user"];
        unset($arr[$key]); //删除
        $arr = array_values($arr); //重新索引
        $_SESSION["user"] = $arr;
        break;
        
    case 2:
        $name = $_POST["name"];
        $code = time();
        //添加流程
        $sql = "insert into lc_liucheng values('{$code}','{$name}')";
        $db->Query($sql,0);
        //添加流程节点
        $arr = $_SESSION["user"];
        foreach($arr as $k=>$v)
        {
            $sql = "insert into lc_flowpath values('','{$code}','{$v}','{$k}')";
            $db->Query($sql,0);
        }
        break;
        
    case 3: //用户发起流程
        $code = $_POST["code"];
        $nr = $_POST["content"];
        $uid = $_SESSION["uid"];
        $time = date("Y-m-d H:i:s");
        $sql = "insert into lc_userflow values('','{$code}','{$uid}','{$nr}',0,'{$time}',0)";
        $db->Query($sql,0);
        break;
        
}

完成的效果，如图:

点击选择节点人员可以从数据库调所有人员名单，现在把李四，马七和张三放入流程中，做一个请假流程：

点击保存，存到数据库:

注意:Code必须用varchar，不能用time，因为在上面用了时间戳

现在我们在做一个登陆用户，提交请假流程的所有步骤：

weilogin.php 一个伪账户

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>

<body>
<?php
session_start();
$_SESSION["uid"] = "zhangsan";
?>
</body>
</html>

faqi.php

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title><br />
<script src="../dist/js/jquery-1.11.2.min.js"></script>

</head>

<body>

<h1>发起流程</h1>

<div>
请选择发起的流程：
    <select id="liucheng">
        <?php
        session_start();
        include("../fengzhuang/DBDA.class.php");
        $db = new DBDA();
        $sql = "select * from lc_liucheng";
        $arr = $db->Query($sql);
        foreach($arr as $v)
        {
            echo "<option value='{$v[0]}'>{$v[1]}</option>";
        }
        ?>
    </select>
</div>
<br />
<div>
请输入内容：
    <textarea id="nr"></textarea>
</div>
<br />
<input type="button" value="发起" id="btn" />


</body>
<script type="text/javascript">
$("#btn").click(function(){
        var code = $("#liucheng").val();
        var content = $("#nr").val();
        
        $.ajax({
            url:"chuli.php",
            data:{code:code,content:content,type:3},
            type:"POST",
            dataType:"TEXT",
            success: function(data){
                alert("发起成功！");
                }            
            });
    })
</script>
</html>

shenhe.php

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>

<body>
<h1>审核页面</h1>
<table width="100%" border="1" cellpadding="0" cellspacing="0">
    <tr>
        <td>流程代号</td>
        <td>发起者</td>
        <td>发起内容</td>
        <td>是否结束</td>
        <td>发起时间</td>
        <td>操作</td> 
    </tr>

    <?php
    session_start();
    include("../fengzhuang/DBDA.class.php");
    $db = new DBDA();
    $uid = $_SESSION["uid"];
    echo $uid;
    //查找登录者参与的所有流程
    $sql = "select * from lc_userflow where code in(select code from lc_flowpath where uids='{$uid}')";
    $arr = $db->Query($sql);
    
    //显示
    foreach($arr as $v)
    {
        //判断该流程走到登录者
        $lcdh = $v[1]; //流程代号
        $towhere = $v[6];//流程走到哪
        $sql = "select orders from lc_flowpath where code='{$lcdh}' and uids='{$uid}'";
        $order = $db->StrQuery($sql);//该人员在流程中的次序
        
        if($towhere>=$order)
        {
            $caozuo = "";
            if($towhere==$order)
            {
                $caozuo="<a href='tongguo.php?code={$v[0]}'>通过</a>";
            }
            else
            {
                $caozuo="<span style='background-color:green;color:white'>已通过</span>";
            }
            echo "<tr>
        <td>{$v[1]}</td>
        <td>{$v[2]}</td>
        <td>{$v[3]}</td>
        <td>{$v[4]}</td>
        <td>{$v[5]}</td>
        <td>{$caozuo}</td> 
    </tr>";
        }
        
    }

    
    ?>
</table>
</body>
</html>

tongguo.php

<?php
session_start();
include("../fengzhuang/DBDA.class.php");
$db = new DBDA();

//流程往下走
$code = $_GET["code"];
$sql = "update lc_userflow set towhere=towhere+1 where ids='{$code}'";
$db->Query($sql,0);

//判断流程是否结束
$sql = "select * from lc_userflow where ids='{$code}'";
$arr = $db->Query($sql);

$lcdh = $arr[0][1]; //流程代号
$tw = $arr[0][6]; //流程走到哪

$sql = "select count(*) from lc_flowpath where code='{$lcdh}'";
$count = $db->StrQuery($sql); //该流程节点人数
if($tw>=$count)
{
    $sql = "update lc_userflow set isok=1 where ids='{$code}'";
    $db->Query($sql,0);
}


header("location:shenhe.php");