PHP unexpected token < in JSON at position 0

Source: Internet
Author: User

Recently in the attempt to write the background in PHP, to the database part, using AJAX to request JSON data, the result error:

Unexpected token < in JSON at position 0

Baidu found a solution, found that they are not, in the blog found that others found on the page response, he went to find a bit:

f12-"Network->name under the php-> click Find Previe can see

I am myself because undefined index

This problem occurs when you use $_post['],$_get[' to get the parameters in the form

Solution: (There are a lot of myself here today to write only one)

Define a function:


Then use _get (' str ') instead of $_get[' str '.

PHP unexpected token < in JSON at position 0

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