diff --git a/public/t.php b/public/t.php
new file mode 100644
index 0000000..0c3c6d9
--- /dev/null
+++ b/public/t.php
@@ -0,0 +1,55 @@
+<?php
+$arr = [
+	'full' => 2888,
+	'reduction' => 500
+];
+$obj = json_decode(json_encode($arr));
+$obj->full = 111;
+echo md5('lfyyhyz8888888888888888888888888');
+//print_r(substr('202107301046364505117328-1', 0, 24));
+
+
+
+
+/* 退款测试
+$reqInfo = [
+	'out_refund_no' => '131811191610442717309',
+	'out_trade_no' => '20210722164514946742983',
+	'refund_account' => 'REFUND_SOURCE_RECHARGE_FUNDS',
+	'refund_fee' => 8800,
+	'refund_id' => '50000408942018111907145868882',
+	'refund_recv_accout' => '支付用户零钱',
+	'refund_request_source' => 'API',
+	'refund_status' => 'SUCCESS',
+	'settlement_refund_fee' => 8800,
+	'settlement_total_fee' => 8800,
+	'success_time' => date('Y-m-d H:i:s'),
+	'total_fee' => 8800,
+	'transaction_id' => '1004400740201409030005092168',
+];
+*/
+
+
+
+/*$dbms='mysql';     //数据库类型
+$host='mysql'; //数据库主机名
+$dbName='hainan';    //使用的数据库
+$user='root';      //数据库连接用户名
+$pass='';          //对应的密码
+$dsn="$dbms:host=$host;dbname=$dbName";
+
+
+try {
+	$dbh = new PDO($dsn, $user, $pass); //初始化一个PDO对象
+	echo "连接成功<br/>";
+
+	foreach ($dbh->query('SELECT * from `notices`') as $row) {
+		print_r($row); //你可以用 echo($GLOBAL); 来看到这些值
+	}
+
+	$dbh = null;
+} catch (PDOException $e) {
+	die ("Error!: " . $e->getMessage() . "<br/>");
+}
+//默认这个不是长连接，如果需要数据库长连接，需要最后加一个参数：array(PDO::ATTR_PERSISTENT => true) 变成这样：
+$db = new PDO($dsn, $user, $pass);*/