diff --git a/db_php.php b/db_php.php
new file mode 100644
index 0000000..42640c4
--- /dev/null
+++ b/db_php.php
@@ -0,0 +1,50 @@
+<?php
+    //创建链接
+    $myslqli = new mysqli('localhost','root','','db_php');
+    if(mysqli_connect_errno()){
+        echo "连接失败".mysqli_connect_error();
+    }else{
+        echo "连接成功";
+    }
+    $myslqli->query("set user 'utf8'");
+    //insert
+    $sqlStr="insert into user (name,psw) value ('jianghu','123456'),('jianghu','123456'),('jianghu','123456'),('jianghu','123456')";
+    if($myslqli->query($sqlStr)){
+        echo "插入成功"."<hr>";
+        echo "插入行数:".$myslqli->affected_rows."<br>";
+        echo "<hr>";
+    }else{
+        echo "";
+    }
+    //del
+    $sqlStr="delete from user where id in(2,3)";
+    if($myslqli->query($sqlStr)){
+        echo "删除成功"."<hr>";
+        echo "删除行数:".$myslqli->affected_rows."<br>";
+        echo "<hr>";
+    }else{
+        echo "";
+    }
+    //update
+    $sqlStr="update user set psw='123' where id=5";
+    if($myslqli->query($sqlStr)){
+        echo "更新成功"."<hr>";
+        echo "更新行数:".$myslqli->affected_rows."<br>";
+        echo "<hr>";
+    }else{
+        echo "";
+    }
+    //select
+    $sqlStr="select * from user";
+    $res = $myslqli->query($sqlStr);
+    if($res->num_rows>0){
+        while ($row =$res->fetch_assoc()) {
+            echo $row['name'].":".$row["psw"];
+            echo "<br>";
+        }
+            
+    }
+    
+
+
+?>
\ No newline at end of file