Sorted:

How to send a GET request and retrieve data in PHP?

How can SQL rlike match multiple keywords?

What is the method to initialize a C language character array to be empty?

How can multiple tables be merged in SQL using the UNION statement?

How to use regular expressions to filter data in Hive?

What are the methods in Java for obtaining file types?

How to send a POST request in PHP?

What is the difference between rlike and like in SQL?

How to get backend data in Echarts?

How to implement the concatenation of character array pointers in the C language?