php:undefined index的几种解决方法,undefinedindex_PHP教程
php:undefined index的几种解决方法,undefinedindex
平时用$_post[''],$_get['']获取表单中参数时会出现Notice: Undefined index: --------;
虽然可以通过设置错误显示方式来隐藏这个提示,但是这样也有隐患,就是在服务器的日志中会记录这些提示,导致日志文件异常庞大。
通过在网上搜索和自己自身的实战总结几种解决方法;
方法1:服务器配置修改
修改php.ini配置文件,error_reporting = E_ALL & ~E_NOTICE
方法2:对变量进行初始化。
方法3:做判断isset($_post['']),empty($_post['']) if --else
方法4:在出现notice代码之前加上@,@表示这行有错误或是警告不要输出,@$username=$_post['username'];
方法5:最后一种很实用,是别人写的一个函数,通过这个函数进行传递值。
<p>定义一个函数:</p> <pre class="code"><span>function</span> _get($str){ $val = !<span>empty</span>($_GET[$str]) ? $_GET[$str] : null; <span>return</span> $val; }
然后在用的时候,直接用 _get('str') 代替 $_GET['str'] 就行啦~

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