What should I pay attention to when developing a small WeChat Mall using php?

What should I pay attention to when developing a small mall with php. The first time I got started with development, I had read the api documentation before, but I didn't really do the project. it was a bit suspended and I planned to use thinkphp for development. May I ask if you have any comments? Is there a similar source code check? This development requirement 1... what do you need to pay attention to when developing a small mall with php.
The first time I got started with development, I had read the api documentation before, but I didn't really do the project. it was a bit suspended and I planned to use thinkphp for development.

1. May I ask if you have any comments?

2. Is there a similar source code check?

3. What is the general quotation for such development requirements?

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What should I pay attention to when developing a small mall with php.
The first time I got started with development, I had read the api documentation before, but I didn't really do the project. it was a bit suspended and I planned to use thinkphp for development.

1. May I ask if you have any comments?

2. Is there a similar source code check?

3. What is the general quotation for such development requirements?

The business process should be sorted out as much as possible... A lot of details are not what we usually see at a glance... the backend logic, such as the product nature, is physical or virtual .. there is a difference between the corresponding delivery... special front-end interfaces such as activity pages or home pages .. how high is custom data display... whether it is based on a certain type of rule or completely custom

In addition, we should consider whether to use authorized login as an account... if you need to complete the mobile phone number, email address, and other important information in which process is improperly designed, there may be an embarrassing situation of multiple accounts .. resulting in inconsistent order and other data and difficulty in merging

A little too much meticulous thinking, a little clear, always good... people who take over will not understand too much deviation...

Code. Payment, notification interface restrictions. Configuration Optimization on nginx/apache and php-fpm.