PHP Unlimited column query source code sharing

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PHP Classic Small application-infinite pole classification

In the background management project, there is a classic application module, that is the column of infinite Pole classification.

Several operations for infinite pole classification include the following situations

1. Add a top-level column

2. Add sub-columns under the current column

3, delete a column, you should cascade delete its sub-columns

4. Move a column

5, the display column, which is the core function inside-mainly to show the relationship between the columns at all levels

All codes in the Code folder

There is currently only a query function, and then we will continue to supplement the following functions

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