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Tutorials are being written...
hi all!
Some guys around me are very interested to set up and run a school for kids for free. Targeted kids are from poor families. We will be giving them free education. The govt free schools are not adequate and education quality there is below any standard.
So we want to give them a good education system for free. We hope this will inspire a lot of people towards free education.
Please contact me if you can donate or help in any way.
See ya
Please cast your vote for Tax report generator for a selected period with order status filter module. ‘marco’ has specified some feature ideas already for it. I attaching his lines here:
I was thinking of the basics of the Sales and orders module, but then with a order status selection, and total price of that period including tax, tax charged and total excluding tax.
Eventually with a list of all orders shown underneath with a summary.Actually like the module zen-cart has. but then with country selection, so that there can be a clear view how sales are doing in specific countries.
Vote if you want it, too. If you want to put some more ideas, just leave a comment here.
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Overall:
1. All the variable names are in camel notation (aName, totalAmount).
2. All the attribute names are in camel notation. That goes for forms, entity atrribute names, entity names. Say you have a entity called ‘person’ and it has some attributes, then we choose the attribute names this way – name, dateOfBirth, currentAddress. If we need a table for a relation between a person and a terrorist, we can name the relation like ‘personTerrorist‘ or ‘terroristPerson‘
3. Classes and Functions are in dot net notation (GetResults(), Client, Order, Print())
4. Everything must be built with OOP structure. Except for some occasional PHP works. When making a module for a already built system in PHP, then it must be made in OOP. There are no global variables/constants in OOP world. If you need those, you can make a abstract class with static members that meets the requirement. Exception is for very high performance software for which actually all the rules can be broken :p
5. All the classe names must have a prefix which is decided per project. Like if we are making a Game called Alex’s Treasure, we would choose a prefix ‘Alex’ before starting the project. So if we need a class called ‘Island’, we will have to use the name ‘AlexIsland‘ as the class name.
5. All the static and global variables are in capital letters with words separated by underscore. like ROOT_DIRECTORY, OBJECTS_CREATED
6. All the constants are written like no.5 with two underscores added to the ends. like _PI_, _MAX_LENGTH_
7. All the functions are actions. So name should sound like ‘do something’ or ’something happened’. Order of the words cannot be different from how it should be told. Like you are working on some operations related to customers and banks. These names are ugly
CustomerBank(), CustomerAddress(), CustomerStatus(), CustomersMostImportant(),
problems with those names are
- they doesn’t sound like having an action
- the words’ order is not the way you say
- the seem to stick the customer at the beginning of the name!
So we replace them with this : GetCustomerBanksDetails(), GetCustomerAddress(), GetCustomerStatus(), GetMostImportantCustomers()
Database related:
1. Entity names must be in singular number. So ‘employees’ is not a valid entity name, ‘employee’ is the correct one.
2. Relation table names also in singular number.
3. after executing every query, you must at first check the error. In mysql and PHP, use ‘mysql_error()’ function. Don’t rely on other avaiable functions to determine the errors.
4. I don’t know how mysql_insert_id() handles race conditions. So, if you don’t know the internal code architecture of mysql, never use it without table locking (even if mysql developers use it without table locking). You need to lock all the tables that you use in a script for mysql if you need to lock at least 1 table. That’s a mysql weakness only.
PHP related:
1. Turn on all the error, notices, warnings from php.ini file for development and testing. You must eleminate every single notice/warning. (that relates to the logical errors)
2. Don’t rely on empty() function of php. search google for ‘why’. You must read very very carefully php’s function definitions and experiment with them. What you assume may not be what it actually is.
3. Do you know abour magic quotes?
Goals of naming convention:
1. Readability,
2. Manageability,
3. Reusability,
4. Perfect Prediction