(It appears to be a synonym substitution. Synonyms can be added in the background. There are errors in the background test, but it does not affect the use!
Source code introduction:
Introduction to the main functions of the source code of the SEO online pseudo-original tool
1. Support online pseudo-original function of articles
2. Support keyword exchange preview
3. Have an independent background
4. Support visitors to submit and exchange keywords (keywords submitted by users can be reviewed in the background)
5. Completely open source, no backdoor, support secondary development
Website description: Independently develop utf-8 encoding using php language
Applicable to friend operations and applications on tool websites.)