Php method to generate a category tree array through the category list _ PHP Tutorial

Php uses the classification list to generate a classification tree array. Php: how to generate a category tree array by category list this article mainly introduces how php generates a category tree array by category list, skills related to php operations on arrays and classification nodes php methods for generating a classification tree array through a classification list

This article describes how to generate a classification tree array by using the classification list in php. it involves some skills related to php operations on arrays and classification nodes and has some reference value. For more information, see

This example describes how php generates a category tree array through the category list. Share it with you for your reference. The specific analysis is as follows:

Here, $ list is the category list array, the key is the category ID, the value is the category node object, and the pid is the parent category ID.

The php code is as follows:

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$ Tree = array (); Foreach ($ list as $ id => $ row ){ $ Pid = $ row-> pid; If ($ pid = 0 ){ $ Tree [] = & $ list [$ id]; } Else if (isset ($ list [$ pid]) { $ Parent = & $ list [$ pid]; $ Parent-> children [] = & $ list [$ id]; // Adds the children attribute to the subcategory list. } }

I hope this article will help you with php programming.

This article describes how to generate a category tree array by using the classification list in php, and related techniques related to php operations on arrays and classification nodes...