Example of smarty second-level classification code and template Loop

Introduction: This is the second-level classification of smarty.CodeAnd the details page of the template loop example, describes the related knowledge, skills, experience, and some PHP source code.

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Share the second-level classification code output by the recently written smarty template engine, which is mainly controlled by two-dimensional arrays.

The data table structure of level 2 classification is as follows:

PHP Code
/**
@ Article classification includes secondary classification
@ Param int $ rootnum -- number of first-level classes
@ Param int $ childnum -- number of second-level classes
@ return value array
@ date 2011.2.24
*/
function temp_articletreecate ($ rootnum, $ childnum) {
If (! Isnumber ($ rootnum) {
$ rootnum = 10;
}< br> If (! Isnumber ($ childnum) {
$ childnum = 10;
}< br> $ Category = array ();
$ parent_ SQL = "select cateid, catename from ". table_prefix. "articlecate where parentid = 0 and depth = 0 and flag = 1 order by orders ASC";
If (intval ($ rootnum)> 0) {
$ parent_ SQL. = "Limit $ rootnum";
}< br> $ parent_cate = $ globals ['db']-> getall ($ parent_ SQL );
foreach ($ parent_cate as $ parent_key => $ parent_value) {
// The array name of the subclass childcategory is the custom name based on the situation.
$ category [] = array ('cateid' => $ parent_value ['cateid'], 'catename' => $ parent_value ['catename'], 'childcategory '=> array ();

// Read subclass
$ Child_ SQL = "select cateid, catename from". table_prefix. "articlecate where parentid =". $ parent_value ['cateid']. "And flag = 1 order by orders ASC ";
If (intval ($ childnum)> 0 ){
$ Child_ SQL. = "Limit $ childnum ";
}
$ Child_cate = $ globals ['db']-> getall ($ child_ SQL );
Foreach ($ child_cate as $ child_key => $ child_value ){
$ Category [count ($ category)-1] ['childcategory '] [] = array ('cateid' => $ child_value ['cateid'], 'catename' => $ child_value ['catename']);
}
}
Return $ category;
}

PHP page call classification, such as index. php
$ Goodscatetree = array ();
$ Goodscatetree = temp_goodstreecate (); // call the classification function (including level-2 classification) 4 -- indicates that only four level-1 classes are displayed, and 0 indicates that the number of level-2 classes is unlimited.
$ TPL> assign ("goodscatetree", $ goodscatetree); // executes the smarty Engine
$ TPL-> display-> (index. TPL); // outputs the smarty template page.

TPL template page output category, such as index. TPL page
{Section name = P loop = $ goodscatetree}
Level 1 category: {$ goodscatetree [p]. catename}
{Section name = C loop = $ goodscatetree [p]. childcategory}
Level 2 Category: {$ goodscatetree [p]. childcategory [C]. catename}
{/Section}
{/Section}

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