What to do if php $_get reports an error

php $_get error solution: Use the [array_key_exists(key, array)] function to make a judgment, where parameter 1 is the key string to be detected, and parameter 2 is the array to be tested.

The operating environment of this tutorial: Windows 7 system, PHP version 5.6, DELL G3 computer.

Solution to php $_get error:

When we directly access the POST&GET page, because no data is passed, it will be because $_GET Or $_POSTthere is no corresponding key and an error is reported.

Processing method:

Use the array_key_exists(key, array) function to make a judgment

Parameter 1: Key string to be detected

Parameter 2: Array to be tested

    if(array_key_exists('name', $_GET)){
        //如果有数据 再去读取
    }else{
        // 反之 可以执行一些 其他的逻辑
    }

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