1.param.php

<?php
session_start();
if(!$_SESSION["user"]->poststuno) exit('你的工号不正确');
if($_SESSION["user"]->juese=='001') exit('未知错误，请联系管理员 0001');

$db_host_main="192.168.*.*";//主数据库地址
$db_user="root";//数据库用户名
$db_name="**";//数据库名
$db_passw="***";//数据库密码

$czr=trim($_SESSION["user"]->poststuno);
$czrxm=trim($_SESSION["user"]->xm);
$cztime=date("Y-m-d H:i:s");
$mem_server="192.168.95.103";
$czip = $_SERVER["HTTP_X_FORWARDED_FOR"];      //操作人ip地址

2.添加操作

<?php
//将如下的代码放入PHP的文件中
error_reporting(E_ALL);//显示所有的错误信息
ini_set("display_errors", "Off");                     //设置文件上传大小

session_start();
require('param.php');

//连接数据库
$pdo = new PDO("mysql:host=".$db_host_main.";dbname=".$db_name.";charset=utf8;",$db_user,$db_passw);

$bmmc = isset($_POST['bmmc']) ? $_POST['bmmc'] : '部门';
$juese = isset($_POST['juese']) ? $_POST['juese'] : '学工';
$fzr = isset($_POST['fzr']) ? $_POST['fzr'] : '20192100063';
$fzr_xm = isset($_POST['fzr_xm']) ? $_POST['fzr_xm'] : '熊天明';
$czr = isset($_POST['czr']) ? $_POST['czr'] : '李四';
$zt = '1';

$sql = "SELECT * FROM 表 where fzr =? AND juese=? AND bmmc=? AND zt=?";
$result = $pdo->prepare($sql);
$result->execute(array($fzr,$juese,$bmmc,$zt)) ;
$e = $result->fetchAll();
if ($e){
    echo '数据已存在！14';
}else{
    $insert = "INSERT INTO 表  SET bmmc = ? , fzr = ? , fzr_xm = ? , juese = ?, czr = ?";
    $result = $pdo->prepare($insert);
    $result->execute(array($bmmc,$fzr,$fzr_xm,$juese,$czr)) or die ('查询错误！14');
    echo '插入成功！';
    if($result > 0 ){
        echo json_encode(array(
            "code" => 1,
            "msg" => "success",
            "count" =>  $result,
            "data" => array()
        ));
    }else{
        echo json_encode(array(
            "code" => 1,
            "msg" => "插入失败！",
            "count" =>  0,
            "data" => array()
        ));
    }
}

3.查询操作

<?php
//将如下的代码放入PHP的文件中
error_reporting(E_ALL);//显示所有的错误信息
ini_set("display_errors", "Off");                     //设置文件上传大小
session_start();
require('param.php');

//连接数据库
$conn = new PDO("mysql:host=".$db_host_main.";dbname=".$db_name.";charset=utf8;",$db_user,$db_passw);

$page = isset($_GET['page']) ? $_GET['page']:'5';  //分页 isset($_POST['id']) ? $_POST['id'] : '这个是数据库id';
$limit = isset($_GET['limit']) ? $_GET['limit']:'50';  //每页显示条数
$start = ($_GET['page'] - 1) * $_GET['limit'] ;    //起始页面
$fzr_xm = isset($_GET['fzr_xm']) ? $_GET['fzr_xm'] : "熊天明";     //where 条件，这里是姓名做测试，模糊查询

$sql = "SELECT * FROM bangfu_bm_qx  where zt=1 order by id desc limit  $start, $limit";
$count = "SELECT id FROM bangfu_bm_qx where zt=1";     //获取记录总数
$num = count($conn->query($count)->fetchAll(PDO::FETCH_ASSOC));
// 预处理语句
$stmt = $conn->prepare($sql);
// 执行查询
$stmt->execute();
// 获取所有结果
$results = $stmt->fetchAll(PDO::FETCH_ASSOC);

//echo '<br>';
$json = json_encode(array(
    "code" => 0,
    "msg" => "",
    "count" => $num,
    "data" => $results
), JSON_UNESCAPED_UNICODE); //JSON_UNESCAPED_UNICODE注意不加会乱码
echo $json;

4.删除操作

<?php
//将如下的代码放入PHP的文件中
error_reporting(E_ALL);//显示所有的错误信息
ini_set("display_errors", "Off");                     //设置文件上传大小
session_start();
require('param.php');
$id = isset($_POST['id']) ? $_POST['id'] : '这个是数据库id';
$pdo = new PDO("mysql:host=".$db_host_main.";dbname=".$db_name.";charset=utf8;",$db_user,$db_passw);
$sql = "UPDATE bangfu_bm_qx set zt='-1' WHERE id=?";
$stmt = $pdo->prepare($sql);
$stmt->bindParam(1, $id);
$stmt->execute();
$pdo = null;