store data into a text file using php?

Question

i am trying to store data in a text file, something like an array into a text file using php instead of storing into mysql database.

for example here are the data to

Answer 1

Storing:
1. Use serialize() to serialize your array into a string
2. Write that string to text file using file_put_contents()

Reading:
1. Use file_get_contents to read text file
2. Use unserialize() to unserialize previously serialized array

serialize()/unserialize() can be replaced by json_encode()/json_decode()