PHP array prompt Notice: Undefined offset solution_PHP tutorial

When we use arrays, we often encounter that the array does not exist, causing a Notice: Undefined offset error when we store array[100]. Let me introduce to you how to solve this problem

Example:

The input result is

The code is as follows

代码如下	复制代码
$array[1] ='www.bKjia.c0m'; echo $array[0] ;

Copy code

$array[1] ='www.bKjia.c0m';

echo $array[0] ;

代码如下	复制代码
echo isset($array[0])?$array[0]:'数组未定义';

Notice: Undefined offset: 1 in D:wwwrootwraskseo404.php on line 5 Let’s look at the solution

Solving this problem is as simple as

The code is as follows	Copy code
echo isset($array[0])?$array[0]:'Array is undefined'; This solves this problem very well. http://www.bkjia.com/PHPjc/632118.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/632118.htmlTechArticleWhen we use arrays, we often encounter that the array does not exist, causing us to store array[100]. Notice: Undefined offset error, let me introduce how to solve this problem...