CI(-)框架结构

一 CI 是什么

 CodeIgniter is an Application Development Framework - a toolkit -
 for people who build web sites using PHP.
 Its goal is to enable you to develop projects much faster than you could if you were writing code from scratch,
 by providing a rich set of libraries for commonly needed tasks,
 as well as a simple interface and logical structure to access these libraries.
 CodeIgniter lets you creatively focus on your project by minimizing the amount of code needed for a given task.

　　官网的解释很清楚.CI 是toolkit 工具包,工具包就是有小而全的工具特性.set of libraries ,这里set让三爷我联想到了redis 的set,卧槽真是个好东西啊,libraries就是

这些小工具. CI 用简单的接口和逻辑把 这些工具组合起来.使你可以减少开发的工作量.

二 目录结构

 index.php     ----------入口文件
 application   ----------应用程序文件夹
 system        ----------框架目录
 user_guide    ----------手册

system 目录

core     -------- 核心类目
       Benchmark.php      -------- 基准测试类
       CodeIgniter.php     -------- 框架初始文件
       Common.php        -------- 公共函数库
       Config.php            -------- 配置文件
       Controller.php        -------- 所有库文件继承的超类
       Exceptions.php      -------- 异常处理类
       Hooks.php            -------- 钩子
       Input.php             -------- 输入数据处理类
       Lang.php              -------- 语言类
       Loader.php            -------- 加载类,加载文件,
       Model.php             -------- 基类模型文件
       Output.php           --------- 输出处理文件
       Router.php            --------- 路由处理类
       Security.php          --------- 安全基类
       URI.php               --------- 解析URI
       Utf8.php               -------- 提供Utf8 的环境
database    --------
        DB.php                -------- 初始化数据库类
        DB_cache.php       -------- 数据库缓存类
        DB_active_rec.php -------- AR基类
        DB_driver.php       -------- DB 配置
        DB_forge.php       -------- 数据操作类
        DB_result.php       -------- 数据操作结果类
        DB_utility.php       -------- 数据库优化处理类
helpers  --------            各种数据类型处理函数
        array_helper.php
        cookie_helper.php
        directory_helper.php
        file_helper.php
        form_helper.php
        html_helper.php
        number_helper.php
        path_helper.php
        text_helper.php
        url_helper.php
        xml_helper.php
        string_helper.php
        typograpthy_helper.php   --------  类型转换
        smiley_helper.php    ---------  JS处理
        captcha_helper.php    -------- 验证码
libraries    --------        各种
        Cache  --------      缓存
        javascript  ---------      Jquery 类
        Calendar.php           -------- 日历
        Cart.php                 -------- 购物车
        Form_validation.php  -------- 表单验证类
        Migration.php            -------- 数据库的操作类事务类up/down
        Pagination.php         --------- 分页类
        Parser.php                ---------- 模板解析类
        Table.php                --------- 表格
        Trackback.php        ---------
        User_agent.php      ---------
        Xml_rpc.php            --------

应用程序目录结构

 models        --------  数据处理
 views           --------  模板展示
 logs            --------  日志存储
 libraries       --------  库文件
 helpers        --------  帮助函数
 controllers    --------  逻辑处理
 config          --------  app 配置类
 cache          --------  缓存处理类

三 框架应用,

　　文件放到根目录下,访问index.php即可.　　

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAu0AAAGQCAIAAACViMmyAAAgAElEQVR4nO3dXWskx57ncb2Vfg3yS8gLgUAPYJkdG3otBO2LPusjyXXRzBGn6TF49mhxaS2wpoUv7GYYY1xojBofj8ZuztJgRqX1Ghs8zWlsQ/eqaDgXbVjoG+kq9yKfIiL/kRlZlVLlX/390BdSKR8iIqMyf5URWT0TAwAA6DQz7QIAAACMiRwDAAC0IscAAACtyDEAAEArcgwAANCKHAMAALQixwAAAK3IMQAAQCtyDAAA0IocAwAAtCLHAAAArcgxAABAK3IMAADQihwDAAC0IscAAACtyDEAAEArcgwAANCKHAMAALQixwAAAK3IMQAAQCtyDAAA0IocAwAAtCLHAAAArVrLMT8CAABcrjZzTFubAgAACEGOAQAAWpFjAACAVuQYAACgFTkGAABoRY4BAABakWMAAIBW5BgAAKAVOQYAAGhFjgEAAFqRYwAAgFbkGAAAoBU5BgAAaEWOAQAAWpFjAACAVuQYAACgFTkGAABoRY4BAABaTTHHPLl3M4qihfceyH8Q//TgvYUoit757HlIie6+GUXR1v2GxeqAFz8dfPSv/9nSpr68+w+/u740H0VRFM0tvHrjD3e//OlFG5tO2vfNu+HHvfkaIe5v2RttqfXub0WR0v4DAC+Rad6P8VzWnn/2TpR4rf+ttMbNe0/CN6/vOvTv7863c7F/9vCDt+YjydLb974/m3Tz3cwxrbUeOQYANJjquNK3/dfKseTs/tZcNLf13rsLpetRknBCL1Jac4x7f2E8Z9/fXZuLomjujVt3v/zub8kdmBd/++7LD95eiqIoWnrvwYRJpis5xtZO68XkGADQYbrzYx68txBFc1v3z9zX3vns2f2tOTfjfHV7TrhJ4y3Ry5xjfv74rSiK5tbulu+7nD36+OZcFEVvffzzRLsgxwAApm66Oebs/pabTL7tv5bEl+TmizkV5tv+a/akmbMnf/n4DzeSuR9zC6//7k8H5syPco558dPBn373+sJcFEXR/NKNP3z88JlZGvPPFZt79vBu7/WFuSiaW1h794u/nsVx/OLk0z+sLcwlm01f8+/1L0+8d0LSi2emKHx12UqSO13epHLyT//td3//3//l5P+JTSmX8uyv//ZBUu9o/r/07j58JqSSmqoKaxj7TZvTDiLpbyc/HbxbHOjeXXO7xQre1gvoKFv3n339p7WFuSiaX/r7z0fkGADQYcrPKyVhZe2jfFrmj3ffzK5iT+7dtG7WOL9nAycW8waEk2Oe3d9aKk8Uuf3V8+zPt18tb+7V2/efWZu79aGz16X3vj5xC2KM2ch73bpvBaiCfCWuLZvrPz9ai4LnEcXx2fcfCRNp5t/6KG9LobGXbt68HpmppL6qpRxTXmVpa+v3kZtjFpaW3Or/Xf/brGx1OSaso7yztbWQbfuDk5gcAwA6TPu56+TSlt91eXLvZnF/5vsPrxv3X5z7M8mKS2/fffD4+Vkcxy/+9t3B7TfmsqtQ7OSY54PenLn8i18eJJNgk8Wf399aiKJobu0fv/zh+Vkcnz3/4ct/TOaX9AbPjc1F0fxbHzz45UUcnz3/jw/X5qJobm5u7o3bBz88P4vjFz992luKomju9lfJXu9vLUTR3Bu3D5IZKmfPHz+4+/aSsVWBOzISUDZxE8LjXlXHIFrqffLtLy/iOH7xy7ef9JaKK3o+SvXqrU+zEnx6K01WWUFDqurkmLRiS2/fTRv0h+QIlnJMst0f0uPWX5uzaifewCk6Y2hHiebWPjx5Ecfx2dmZsWdyDAB02rRzjD1Y9Pyzd8wr1IP3FopU8+C9BeMWw7f916Lotf/x0B77+Pnjt4r1zRyThKCFd782l3/26e+jKLr+4ffZn299Yd3gSK+z6T7Tq93vPy2WOfvilnm1j+M4DV9p3Eo2a64Rx3F89vW7C1U3S5wrcUjZajZRLRmDevNDeyZNUt2kLcV5LWl7pK8GVdXeThIt3WPy2Ttz5RxjD5AlBc4DRnWOCe4o7rwrcgwAaDD1HGOGlWS6TDElJvk9uSh9/+F14/qUfcWMKB2mMnOMc+lzJX++9YU7b8W8ryFdzJNrnbVZc7Hk225k2S2bMudKHFI211e356r2YEkSyPUPv3deN55xv78lLWE1SFBV7SaUj0mSDe1Y4uzaefq+MseEdxS3hckxAKDB9HPMWfFgkn3LJTbHkp7cu2letbNBHlF6FTNzjBA4TL4/m5sYI8c48zVs1YUp9hNSNldy9a6YH3P21//14Lv/+/zMUy+nHJ7bO+bLQVW1dxWwVXkhp8SVKzTtKE45yDEA0HHTzzFpWLn1xdm3/dfca1Yyt/f2V+mXyuRzfkMmsk7/fsxXt+caTFOxNjrZ/Zi0FN7nlZIhnWTmytj3Y5JjkBY0qKp2Eya3cELux0yQY5p2lAI5BgA06ECOySb3Dj5aK89S+PHum1F0/cOPky+VKWa1JhfByq9AqZ0fk05fvXnvSfj8mEY5Jv2fF5y91mlhfkwc/3zv5pzn+2Oyp4SycoXOjzEeEYrjrPGyggZV1ZkfI85ZkubHTJBjmnYUAIAuXcgx6cPWb74pfaJPbtK8+aZ7zT754O+i5BGa9Mtq8+dQsqeefc8r/ZI8TpM+9DN3897PxTNB2WMx3ueVGuWYbK/zb32QPixTPMVz857vynp/K4qiuVtfZN9wElA2Qf59vq9ufCB9n69RgOx5paxthOeV7t00W096siikqtXPKxXPkE2cY4zWa9pRAACqdCLHpLcESl/tG8dxMYPUnUkhfi2I+a0qId8fU3xHivgdLebXn4yTYzx7tb6apSR54imKomju7X95ElQ22bOv33ujvFqy/w/MrwCUvz/Gupnz86C35Px161bA98dYVQ34/pjU+Dmm3HpNO0psbPaCv3wYADCpbuSYLKxI/5F1+nCz9N8RnP313+4aX0J73f6e1oDv87W/btb+83Xx+3yb5pg4jp/970+Nr+J9tfoLfeM4jrMvlo3m/us//Z+gsnmdPTn+9H++c+PVhfRC7l3V/sZbqZDGEt7v862pavX3+UbzS9d7d//yz5PNjxFbr2lHyTdLjgGAjutIjgESybSb8rRmAAAE5BhMSzKVZa2fTqiJz54/TifIBP+PCgCAlxw5BtPy/Kvb0uwY+SErAAAE5BhMTzI75rV04krQ5CEAAAzkGAAAoBU5BgAAaEWOAQAAWpFjAACAVuQYAACgFTkGAABoRY4BAABakWMAAIBW5BgAAKAVOQYAAGhFjgEAAFq1mWMAAAAuE/djAACAVuQYAACgFTkGAABoRY4BAABakWMAAIBW5BgAAKAVOQYAAGhFjgEAAFqRYwAAgFbkGAAAoBU5BgAAaEWOAQAAWpFjAACAVuQYAACgFTkGAABoRY4BAABakWMAAIBW5BgAAKAVOQYAAGhFjkFXjE5H0y6CYrQeTPQHvDymmWNGg97i8kr5X38Yx/Gwn/6AsQ37y73B6Xgrlht/7K2FGA02VtYH5TNv+E6bdpgLrc4l87We33B3cXn3ePJl2jTeEcnXuriuIqyen6yaNXsc0KqnB+tjNnveAs37A6BZN+7HnB6su+cgcszk2s0xF2ryM+/L3GGuRo4Zz+XmmNODdWvdYX95ZXGnybYuMMfkyDF4uXQ7xwwO1tPPPeZfR4ON7PPQxoH0Zh32l3uDYb6ucVI4zV/Mb/wUu0t3NDBPNDX7Ot6xzmKjQS/7VVzRPoH6zmhyIUeDjaRseWuEtcNpdUXqypkUZmfoXjCG4qHxNWN17YwyuJeEogrG3TvxcuV0GHPXvjq2UZ1mPadiX+LypYMe1Hq+Yz1mdTyd3F8XsQMn7/G0LiuLO8N4uGsX2+iu+RbM8svvCzfH+N+SVh3LXSVgRSkfDHcX699lTTqJlWPEFX0tn7RAYH8on08ArTqdY6xTTPoOtE4lo0FPuoRb644GPeP9X8SI450V8/V0m+m5Mnk9YF9D96xUXFqyk6BR+JAc4yvkaLDhnIZC2sFIPEJ56sppffo0LxjiofE1Y2jtqsaVzLbyt5t00H0N1Vp1mvScpr3aOeghrVe1qex1qxgGzzJyJ69qN6GQRSCO0wST/Fy8960jkr+PzPJ43rz26nJp3aMmdJXaFYXTlNt6vneZ1PKeI1XkGF/vqmj58rhSYNcCFOt0jhEu+e41zHuecu61CLeRzW0a72fPeS1gX/kJyL0znC8Tdj9GLKRzpQ8tW/4hXipPTTmN06i5tYpDIzbjGLUrV6G+rTwH3dtQbVSncc9p2qsrBwjE1vNtynldbE/vMlInD+zM+etuJi7/HH6snbL5YpBvjMZ3fqhbsbpgvneTr1V9RyrfjrcH+lpeyjHjdS1AFWU5RpwaXHo3OiPlzjvWnKaXbdO8gdxsX8Xt6GI79gnIKEB4jnEL6SSVZu3gK09lOaVBlqoLv68Zw2tXOc+3uDfumdkgH3R/Q7VQneY9p2mvrridILeeb1PuHTvpOl2xjNDJazpzqZDWe9w8WG6O8dxc9NVdmB8jldbZiHx+qFmxOsd43k2+VvUedHMBuQc2yDENuxagksIcU38v1HeeSk+CzieVqqtRyH3X9LxjnBcmyjFyIYUcE94OY+WY9KOkPKFk7BxTVbuQ55WOd8oBS1zScxURlr+YHOPdaaNe7Vxs6lvPt6kJc4zQyauuplIhJ80xvroLOUYqrbMpz+ec6hXlcaXR6DRrgaY5RjzoreeYoK4FKKYsx4Q9Q+EfYjDf0o3HlXxGg41k2qBz0i+XJyDH+ArpnHdC22GScaW4NLTf8kDMGDkm9i4cOK5U3vIljCt5Clnfq0sHvbb1asd3xF/rlyl18rB2GyPHNHxfSDlGKK21Lf+4c/WKUsfLx8smHVcyN3hx40pWXcgxuBq05Rhnepr1sIC1rjAPznxLp/PmytPi3Il4dftKluvZz9qEzKtNBkoqryWlQhrnncB2mGyer7Xlugu/txlDaxc6P0b+WOyb/OhrqDaq07jnNO3V/vDqbb2qTZlDQr7q+JYpdfKATGYWMjzHGFu2xmrluos5plxak6+r1K6Y7todpDbf0TXvsoBOUuQhX+9qkmMCuxagmbocE5tTJaoewd3Jnuo0TlLZqERyRnAnGxbPN9qPBVXuKy+/c1IIeAJzKH/s8xSyfN4JaYeJn7suzsi1F/6KZqytne/6YU96yAb4vYMF+cOovjoKl9KJqtOw5zTt1e5BD2s9X8fIX6947tq/jPTVKWJd5EI2yDHmI9ZFATx1l3OM9JY0S+7rKtUrFgX2TEqrfZf5n7t2B8WcfZm9qzbHhPQHq2sd7zDnF4p1I8e0zLlv3HRt3xXLr4WvrrpyxmjGLgupzhWrskNXJx+7tJ2t5tXuXcAEyDHOoMw4jyOOBj0+zUzejN0SUp0rVuVKujr52KXtUDVfpt4FTIIcE8f204nNThbJDXA+J8VxPEkzdlJIda5YlWW6OvnYpe1eNV+K3gVM7ErmGAAA8FIgxwAAAK3IMQAAQCtyDAAA0IocAwAAtCLHAAAArcgxAABAK3IMAADQihwDAAC0IscAAACtyDEAAEArcgwAANCKHAMAALQixwAAAK3IMQAAQCtyDAAA0IocAwAAtCLHAAAArcgxAABAK3IMAADQihwDAAC0IscAAACtyDEqjU5H093RpRUAostp/4veC70IwOSmmmNOD9aXd4+Tn4e7i8sri8sr6wMtp7Zhf7k3OC2/vLuYV0pY2PxhpT8cY7+jwcYFtFJR7LyEvh2Zr/tq4WmcK6DotOVjaiu69EGz1qjpQr7j0m6bN+9mcrHb2z4ASLqSY453VhZ3xrmqT894OcZ8pZs5pnZHITnm6grOMeN36ZpAQI4BgEIncszxzkryydU5DzpXgtGgl/06Gmxkq2wcZOdC+5rquTCnC5werGcLjwa9bCONNmteNob9tPy9waD5/ZjTg/XllcqqWVVI/xq0fGktaxmx2EkJyzsSCzDsL6/0Bwfr+XaKBkl/Hg16i+5fSy0zzLdgNN1p/uLKopWWfK1d0xTtdKewHGN3aXvJYbm5KiplN5T3uDjF8DRF3qTii0U7h3ez2mIHbf94h0wDYEydyDGx78Pr0L1KFSfBbOHjnfzEWptjjEvXcHd9o5ecOrNzaNPNivf5k9N6kxxjJCrnQ6oRsOxKFMv4yuxb3g1tUrEbjystmgexaLTe4NQ+Ct47VcUWRoOeUYyi2Y93zOJle08vkMnrAU3XTnca9p061t+PsQ661FyNulDt/ZjaGnnvqBnt7HazJl3IKVXt9gFgfN3OMe5NC+cDsbNMfY6Jh7vJKXg06PV3dhd3hsX1rPFmpUu1b7/eHGNclYV1jRtI9ovGhVwss11lcZveYk8wP6a2cQROmT0DVfl2siOYFaVXvF7fdO12pzFzjLDNZl2oLsf4ahQy7lMsY+ylcRdquH0AmEDHc0zxunkrxf6onZ8QA3JMPOynI1m9wfBgfeNglL3SfLPpZcP96O9eRfL9CjnGGVwwhmCKf6VzvX2BkctsviRv01/sVnOMMYLgmUbjhABnp3krpZ/jjcEga49hTddud2otxzTsQnU5xlMjz+29fF1nbLfYS/Mu1Gz7ADCJrueYbBnj4/VEOWY02EgmGSSzFnaPT5M0M50ck36ozVavvNKUCxacY6RtXlaOSWXzRcrXe1+OSa98zi2BqhxT33TtdqerkWPkdnZzTLMu1Gz7ADCJzueY5JIzME6Rk4wrJSNKgyS7jAYbvcFgt26M5kLHleLKG/iiCceVPK9f0LiSd0VfmYV4Z205dFzJp8XudCXGlXztHNItQ4odsn0AmED3c0x2W7v4q28ao/l6MpzhO/muZDN8e+vFLIqmmxWnVTaf55sWydhUft4vXrfbo/k8X2mbvmJf2PyY04N1+X6MNPXVXXFlUSiVuW5I0yXLtdWd2ssxzbrQ5PN87WG1+nZu2oXMQoVsHwDGpyDH2E/0JAKeAh36Ruvts3lpAmPwZs2rV77iWM9dly+fwnO5ZinNK3HD565Lgzie567LOxILUH8/xngC2feNeSv9nd1yFUqPLuerG4djYH7cr2+6OG6xO7WYY+ImXch3XMQO6XvEuti+r5293ay+C5XaoW77PHcNYGwa/l+CqvmD0M7zgFLo2rtB02JMdCcAuEIU5JjRoMdntaurYY6xBozGGZugOwHAVdLtHJPcBm/6gRuaNL4fYz4G3CyR0J0A4Mrpdo4BAADwI8cAAACtyDEAAEArcgwAANCKHAMAALQixwAAAK3IMQAAQCtyDAAA0IocAwAAtCLHAAAArcgxAABAK3IMAADQihwDAAC0IscAAACtyDEAAEArcgwAANCKHAMAALQixwAAAK3IMQAAQKtp5pgfAQAAJjDlHHMOAAAwLnIMAADQihwDAAC0IscAAACtyDEAAEArcgwAANCKHAMAALQixwAAAK3IMQAAQCtyDAAA0IocAwAAtCLHAAAArcgxAABAK3IMAADQihwDAAC0IscAAACtyDEAAEArcgwAANCKHAMAALS6+jnmcPPGzLUbM9durB7Zf3h8OFt+cUKtbPPx4ey1/cNL2NHYey/xNjJqnKw2b20AQO7q55jz8/Pz86fb8+3mGGmDk24z9Wjvzuze05qFLizHBO1d5mkTVCHHAMBEXuIc060N5k5Wr93ZfnwRW77ovZNjxkCOAYCJKMgx+ZiFMWxxsnptf3vvTvJidv9AfDHhXmJ94yDGvtKrS3nvj7JdZP/SC7+8zceHs0GFzxztz2yeJD8+2rszM3/4yChbsnDYjkqp4mg/3ZqxpH/vQavbrSfkmHJ7lld/tHdndu9w9dqNmfnD7U1js94dWZqtLtZdelHqdefnR/vmoU8XDitnRac9zDYb0JMBABYFOaZQTN04Wb12I73iPj6cTZOE+GJCvFUghZssQ1Tu3bfB0utmMcRyHu3PWB/Hn27Pm8U27444H9ydAph/TdfKck/6p0d7d5KdHm76LrfW3j2rCzvyFElqT6lBHu3dmbm2f3h+snrtxuze02xgq2JHlkari3X3N0hezrzXZcXIU11wOes7bdEZKnoyAMCiIcdYH4LzE305Uogvir+KL3ouQsLefRt0X8+jQyK7XhrldCbVFlfHYpXk47izKSkwubeI0iv60f7s/J3Vo2LiS3o/qZzY7L3Lq0s7Cm9PsUGMhGQUu2pH4jaDVhfrLjeI3OtKOSa4nPWd1gpMtT0NAHB+riHHGBePmhP9ReQYce++DbqvN80xwo2Bx4ez84eP3Ps0pQKUAlD64ubJo7397aPD2c0Td+PJdVooXuXq4o7kNpksx1TtSNxmk9VLdS+9KB93Y7CpfGOmFjkGANrX+Rxj3Fc/3JTux1h348svJkJyzNPt+apxEGPv6a/SxIXAcSUpx6SRpbzBO9tH5T+VQ4OYgfZXNw8fnT/d3txfdZNQ3d7l1aUdyUWqaU9rXKkcRKp2ZBlzdfHx8vxF8bjLB8i/o6N9e8ZMXacVc4zbkwEAls7nGOND8Oze4Wpxoi/fyRdffLo9b972L+bAll50Xnc/ght7Pz8/NwcUkn15tlkMT0gzXezP+vKMTvdy6NmROcBRTN0whqXSHVmr55uV9i6uLu6oQXuWG8QTRMQdCZqsLtbd2yDl425O/q1skKxgbo4RO62YY0IGqgAAGnKMRHxaVfMjrGN9+9wV2bsW9q0Rb+70Cu+fmnsyAFwucgwQxsoxocNeBnIMALSPHAMtzNGWqQy7WCNQzb/WhRwDAO1TmmMAAADIMQAAQC1yDAAA0IocAwAAtCLHAAAArcgxAABAK3IMAADQihwDAAC0IscAAACtyDEAAEArcgwAANCKHAMAALQixwAAAK3IMQAAQCtyDAAA0IocAwAAtCLHAAAAraacYwAAAMY2zRwDAAAwCXIMAADQihwDAAC0IscAAACtyDEAAEArcgwAANCKHAMAALQixwAAAK3IMQAAQCtyDAAA0IocAwAAtCLHAAAArcgxAABAK3IMAADQihwDAAC0IscAAACtyDEAAEArcgwAANCKHAMAALQixwAAAK3IMRjT6HQ07SKMQ2mxVaPNAVycaeaY0aC3uLxS/tcfxnE87Kc/vPSGu4vLu8dxHMfD/nJvcDrt8sRxHI8GGyvrg0YXp7zwk9ViuJt0koZ7T5jF9nWw7jSyqUmpJmqiwO0nHTLEGF0FABroxv2Y04N19zRNjsk0u2xcjqnlmOOdlcWdsbtFSI5Rb7ImCkCOAdAl3c4xg4P19CaN+dfRYCO7ebNxIJ8gT7MVrQXEFUeDjd5gsJvtxfnVuzvjZlJetmF/uTcY5mU2z/XiRpzlzToO+/mLg/L9mKYrjt044o6MJXeGpQas3JSbY0KOSFHE4538pl1Sr0arO8X2dbCieNIhNvkPd97Cxf3F6qNT26VDSxXWRHaGc274Td6vilo7bR4f75BpALSs0zkmP10e7+RnYevj3WjQk877+WnaXHg02Cg+pzobtK+C7q/C7syPpNZloCjzaNCzriXCrkPqaC5jRgFxxWE/H01ILyrl602jxgkpodSA8qacHOM7lM4GLcbNhsADavI1rFRO+RC7LSkdbislHO+Yh088OoFdOrBUIU1UkWMadUi3NaRacz8GwMXqdI4RTrXuuXs02CiNDojn99ODdetF8XJe+tW3O/+Fzfnw3R9W7DqsjsL8GP+K7h2jUiGbNY7vgufmmKLFqjZl5xjvoay68hUX6dADavKPK5UbuX70xHO43aXqjk5Il25QqpAmqsoxTTqkn9xVAKB9ynKMODXYOUvKn2jtq4hxenUuG9av/t0VN8ztK5k7kLE+GPl37a+juXxxNarJMaNBz5oYIV1vGjZOaI6xlvFuysox1W3rm7lSXKRDD6hd+/AcIx9iq9Xkw1381Rri8R2dkC7dpFQhTdQsx/g7pNgmwsAWOQbAxVGYY3xzYjIt55jK3WXTEcQZrOSYuCbH+Ed/OpBjjD3Kk1F8OSa9lqc7qjs6IV26SammlWPkWpNjAFw0ZTmm4T1tZxfeYQhfjgl7NMNzeXiZxpWKZcYfV7Lasz7HhB5Qd8tNc0xpxfIe7V+d9NB4XEkUXqopjSv5ak2OAXDBtOUYZxbncNfzQTld1/gQXDUt1JtjfLszT+VF4aumSTaZbmku753nWxcv6udjBjRO8xzTcJ6vdCjDckzoATWNOz9G6J+x93C7K1qPcUlHJ7BLB5YqeCq0uUx1jvF2SLOAIbUGgPapyzGxOUXA80Cs+QioO4NSeky3Isd4d2c84JovP+wvr/R3dqUHaBs9/mou73vu2rei/XysOGDRoHG8O0pndaTPXftbLPy5a/vFgBzj21HV6kax6+/HSIfY5D3c9sPP5o58R6e2S4eXKqSJ7JIMzYHLRh2ytF+p1kab89w1gPZ1I8dcEZ4nVqbFnR6Bdk12uDk6ANAGckyLpp1jrCEJ7udftIaHm6MDABeAHNOiaecY+yFeLpMXrPHh5ugAQOvIMQAAQCtyDAAA0IocAwAAtCLHAAAArcgxAABAK3IMAADQihwDAAC0IscAAACtyDEAAEArcgwAANCKHAMAALQixwAAAK3IMQAAQCtyDAAA0IocAwAAtCLHAAAArcgxAABAK3IMAADQapo55kcAAIAJTDnHnAMAAIyLHAMAALQixwAAAK3IMQAAQCtyDAAA0IocAwAAtCLHAAAArcgxAABAK3IMAADQihwDAAC0IscAAACtyDEAAEArcgwAANCKHAMAALQixwAAAK3IMQAAQCtyDAAA0IocAwAAtCLHAAAArcgxAABAq6ufYw43b8xcuzFz7cbqkf2Hx4ez5Rcn1Mo2Hx/OXts/bKdAExGbztuerRir7hdbpHGcrHbjCALAlXf1c8z5+fn5+dPt+XZzjLTBSbeZerR3Z3bv6USbKHjKOekWJt+sbIK6X1SRxkKOAYBL8hLnmG5tMHeyeu3O9uO2tszNtP8AAAzoSURBVKYrx0xSd3IMALyMFOSYfNTAGDg4Wb22v713J3kx+wQvvphwL3K+kQhjX+l1qLz3R9kusn/ppVfe5uPD2aDCZ472ZzZPqosUuM2Kcq7u5Vuo2KbcdPKL0uq1O/LXvbT9o/2Z+cNHDcsZ0nSP9u7M7h2uXrsxM3+4vWls1rsjh7crHh7tB/dPAMCYFOSYQjF54mT12o30mvf4cDa9QosvJoIuxoebN5wM4dm7b4Ol181iiOU82p+xPrg/3Z63bkgIRWq2Tc/VPckESdQ48m2zoqbOi+bth+KeirAj4wep6Yr9Hm4mV/p0y4/27sxsnvh2JJYzsOke7d2ZubZ/eH6yeu3G7N7TbGCrYkeOuq5YHI6K/gkAGJOGHJN9rjU+WJuXmfwCJr4o/iq+6LlcCXv3bdB9Pbv6prJLuFFOZ1prftfBX6SG25RzjPOKZ5sVNS3HNc+Nn1ITpXeJynnRrnuaJ472Z+fvrB5lv3p2JJUztOmMhJTGmrodOeq6ohW+a/sPAKCZ7ucY44JUc0m4iBwj7t23Qff1pjmmdOFXkmPc+OXdUSFJh96dpmNMj/b2t48OZzdP0r96diSVc7IcU7UjBzkGAKap8znGuAN/uCndj7Hu25dfTITkmKfb81UjEcbe01+lKQ6B40pS5nh8OOteO2uKVL9NqZxCvGhhXEm4KlflmPO6uj8+nJ3fX908fHT+dHtzf3W+GK/xD0s1OJrWuFI5x1Ts6GjfnjFT1xXFHOP2TwDAmDqfY4zZmrN7h6vFJaF8z1988en2vDlAkFyBxBed1915vsbez8/PzcGUZF+ebRbDUmY5hcxREYzcUa3gbUrl9MQLYZtNms4ciCnNifFUx5oRXKp7OmHl/DyfwuLbUYOjWa6mJ8fINcoK42a4sMMhLgkAmIiCHCMRn2vV/LBrZ777bgp01z2812nunwDQVeQYYBLkGACYJnIMMAlyDABMk9IcAwAAQI4BAABqkWMAAIBW5BgAAKAVOQYAAGhFjgEAAFqRYwAAgFbkGAAAoBU5BgAAaEWOAQAAWpFjAACAVuQYAACgFTkGAABoRY4BAABakWMAAIBW5BgAAKDVlHMMAADA2KaZYwAAACZBjgEAAFqRYwAAgFbkGAAAoBU5BgAAaEWOAQAAWpFjAACAVuQYAACgFTkGAABoRY4BAABakWMAAIBW5BgAAKAVOQYAAGhFjgEAAFqRYwAAgFbkGAAAoBU5BgAAaEWOAQAAWpFjAACAVuQYAACgFTkG3TU6Hb20e79ovtpd7VpPyxit+lIdiJeqsmjdVHPM6cH68u5x8vNwd3F5ZXF5ZX3w8nToYX+5Nzi9uOWrN7WymP1r3ObD3cX8wInMI9u4YEkdR4ONyTrDRD3K3Puwv7zSH45fkAtU1PGgSd/wta1T67Y621S0ddQ87VD7FiiM0ZN9q3SjKxZ1b6WTtPVe+3Vt9vP3nxgvPPnuldlv/jxh6SR//uP+zGz+z95pYNkSD7+ZuZgSvmy6kmOOd1YWd6b+Br1kU7pUnB6sWyeLYX+5YeNfYI7JTZpjJutROnLMuHUMyTHakWMuTIO6h9CVY35dm92f+eOvxQsPv5mZ3V97ONbGyDEt6USOOd7J7w1Ybw/nND0a9LJfR4ONbJWNg+ztbr8HfG+204N141ZEtvxosNEbDJJPt8X9gNIuHMIyo0Ev+3k02EjKP+wv9wbDfL95qcxTpLg7p1T58s4GzfNsfqMlWbHcAtIpcri7WFOSii1Ly1s5RlzRV4WkjsY2q454+ailSj2q0erO3of95ZX+QGztmk7idGDj1/ryrG/4Or9YR/M+llWp0aC3aJW83La+WvcGp8mhzDe4srgzzG8CGauHvFnkNmnlTV2qY9z8qPl2ZL5Ja99cAa1df/4x/rkh1amU/CGw3FUanN/k4vnqPvkZqbX3WnWO+fmTz6XbJ7+9/3p2W+X1734uXvz8/U++Ee+1/PmPdojJN56u/uuamWmKmGKW7de1vCSfmDlGLAyCdCLHxL5PlkP3etkfxkY+yFZMu3XIKc9a5njHvs5ZV5TiYm9EE5NvmWwXpwfrxit5YUaDXuks4KuRUyrzrGGfxYwdpUVKz0elFkguS96bQFUlMT8zme0mNEJxZH1FqqhCeVzJ19RO+1jc0FDfvG47SPX1tYmnk1idMO97YdWRO7+vjnZfEjdS/NxkXCk5aslekgRTXI+FEUDPm8XXJm28qeU6Vh21JjsSO6S18bqSeO83BJ5/zB3IZ5L6rhJ4fqsqnlT3Ns5Ibb3XKnKMeduj+Pm391/ff+WT35KXjSzy2/uv+5KEZ3jIWqA6x5g7TQJNdWEQpNs5xnxf5Qu7Yxb5MmH3Y6zNe87s7rrSqaFimeHu4s7weCdfxblZahY4v1SINXJOZ9ZZQ6jpcNd8exuBqaLYNl9JnLXMPYqNkG/HW6Qmlw1vU1fdsS96VGjzmvz3umvrbjHWrV+xfLhLnd9XR9+8IvlwN84xUk/29A1P5JLbpJU3dcAnlmKZxjvK2sH3Fqgvib+beZNl4LiSVHi5qzQ/v8X+Hiu8Wyc4I7X2XgvLMTn3xd/efz2JIFaksNQPVNXlGGen+a/ewiBIx3NM8Xpxs9R+bxhvg/AcY85yLc4j+brGzeHin3NaqVzG+sxn35p2CpydIuUaOW/XmrOGez+5wanW+KtUEvcDUHbgvI1gLiAXqUGO8Td11SWz6FGhzWuqP7eGdBKzGFZPDquO0Pl9dbTbzdhIcTfeebFJjnFG/fKfV/rD0HYQi93Sm1qsY9CVNWBHaZV9b4GAkpRbu+b8U5ljxDNJbVdpdH5zi+evextnpNbeaxXjSsWQTR4OjJGm4t8rn/xWlSGcHPPku1fc2b41Oca90ZJt0F8YBOl6jsmWse92jH/KS9+ipQ/6pfd53TB/5TLObecu5Rh5XGk0Os1WaZpjxEZoPcf4R3+mmWPqOomxfLGRBtUpd35fHb05xljSnhvRZo4JaQdTy29qsY5TyTFiScrjJjXnnzFyTF1XCTy/ycXrRI6p72P183yz54ykSFGouBfiGVd68t0rk+cYBpIm0Pkck7wDB8ZZY8Jb0Ob7wXceaTYmVS5xL7n2eybhNxtXCs8xze/iZvKxg0nHlcwNXty4klWX+hwT2rzulhve6/bJpy6WZ07UVqfU+X11rMsxdqXazDFjPb3S6ptarsI0xpXkktg9OeT803hcKa7rKmHnN1/xOjeuJCrlj4ffSOEgGzbyPitUNaYjzvMNzzHB40popvs5Jrup6Dwc4Zu2aT37UDmqks4789+NtyZLCvcw5GU8H1Zq57T6atQgxwif/Hwho3QbOWRKbHHJ9MxPFBqhYoZg+LRK3+EIyzGhzWsKOLcGdZJkOakDh1WntK6vjp4c43b49u/HhLdDfZu086auf4802ZH4JvW8uWpbu8n5p3aer1F4sUlNYee3yuJJdW/ljNTae+3nTz53Hv9Jh2bMlFBkDns+78NvZozX/XNTfl1znidKR5eMbaZBJxnMEub5Zgu483ylwiCIghxT+r6T2ByH9j4bPPRPjSyGfis+mhu78J6XhWXMimQ/D/vLK/2d3VKBzauCWKOmOcZugcGu/2asOQTunDF9bZu/7n/uOq9OxXPXoY+HOOdl8XAE5pjA5rUYe69o7ZBOUteBq6sjrCvW0Xs/xujwpRkSpXecXevAHONth+Md/0SZi3pTi1OS/Uetfkfim9T73HVtaweefzwHaGg93uy8u6u6Suj5zVM8X93bOSO1+F4zv6HOnF9ivm5kFONR5yI31M+xdaaz2Asbj1U/zAe2zAGpfKf+566NEFP1JkJGw/9L0MKXqk2Xczf40nZbkWOmpINF6jjVnf/0oF+VY9TWq5u636S8/XExFOQYY6KJUpeVY6zbrb5b05erg0VSRXXnHw12fZ+bVderm7rYpLz9cSm6nWOSMVr1Ef7y7seYDyh25JTRwSLpcEU6f8lVrdcUdbhJL+3tX35u+Qr8u7jmumK6nWMAAAD8yDEAAEArcgwAANCKHAMAALQixwAAAK3IMQAAQCtyDAAA0IocAwAAtCLHAAAArcgxAABAK3IMAADQihwDAAC0IscAAACtyDEAAEArcgwAANCKHAMAALQixwAAAK3IMQAAQCtyDAAA0IocAwAAtCLHAAAArcgxAABAK3IMAADQihwDAAC0IscAAACt2swxAAAAl4n7MQAAQCtyDAAA0IocAwAAtCLHAAAArcgxAABAK3IMAADQihwDAAC0IscAAACtyDEAAEArcgwAANCKHAMAALQixwAAAK3IMQAAQCtyDAAA0IocAwAAtCLHAAAArcgxAABAK3IMAADQihwDAAC0IscAAACtyDEAAEArcgwAANCKHAMAALQixwAAAK3IMQAAQCtyDAAA0Or/AyFtHcbNjMe5AAAAAElFTkSuQmCC" alt="" />

四   运行解析

　　

　　1.单入口文件index.php 初始化CI所需的基本资源　　2.Router.php parse URIs,确定路由,(在routes.php进行remap APP层)

　　3.存在缓存直接输出,不存在则Input.php处理请求字符

　　4.app逻辑处理层 MVC

　　5.渲染输出,如果开启缓存,先缓存.

五  MVC

　　老生常谈了.总之,如果你认为M不是必须的可以不要它.但是开发框架的时候为了装13 用,一般还是留下的.