I've dig the database here and didn't found any answer for my question.
What is a standard for a php programmer to know? I mean, literally, what group of language functions, mechanisms, variables should person know to consider oneself a (good) php programmer? (I know 'being good' is beyond language syntax, still I'm considering syntax of plain php only)
To give an example what I mean:
- functions to control http sessions, cookies
- functions to control connection with databases
- functions to control file handling
- functions to control xml etc..
I omit phrases like 'security' or 'patterns' or 'framework' intentionally as it applies to every programming language.
Hope I made myself clear, any input appreciated :)
Michael J.V. is right claiming that databases are independent from language, so to put my question more precisely and emphasise differences:
Practises or security, are some ideas to implement (there is no 'Pattern' object with 'Decorator()' method, is there?) while using databases means knowing a mysqli and a set of its methods.
EDIT 2: It all came to me after some interview task:
Count seconds, days, months, years elapsed since date input till now.
So I had opened the php docs to check date functions. After I had done tasks the interviewer told me he wasn't satisfied with my actions since datetime() is something everyone should know. That's why I'm asking all this. What everybody should know..