ThinkPHP template range judgment output In tag and Range tag usage detailed explanation_PHP tutorial

The in tag and range tag of ThinkPHP template are used to determine whether a template variable is within a certain range .
1.in tag
ThinkPHP’s in tag is used to determine whether a template variable is within a certain range. The format is as follows:

<in name="变量名" value="值1,值2,...">要输出的内容</in>

When used, set variables in module operations (such as Index/display) and assign values ​​to templates:

$groupId = 1;
$this->assign( "groupId", $groupId );

Template/Tpl/default/Index/display.html, use the in tag as follows:

<in name="groupId" value="1,2,3">管理群组</in>

Run this example to output:

Manage Groups

The php code for this example is equivalent to:

<&#63;php
if(in_array(($groupId), explode(',',"1,2,3"))){
  echo '管理群组';
}
&#63;>

Note: The value of a variable can also be a string or an array, and the value of the value attribute can use a variable.

2.notin tag

Corresponding to the in tag is the notin tag, which means it is judged not to be within a certain range:
Usage such as:

<notin name="groupId" value="1,2,3">非管理群组</notin>

The above two tag examples combined are equivalent to:

<in name="groupId" value="1,2,3">管理群组<else />非管理群组</in>

3.range tag

ThinkPHP’s in and notin tags can also be replaced by range tags, such as:

<range name="groupId" value="1,2,3" type="in" >管理群组</range>

The above example is equivalent to the in tag. When the value of the type attribute is notin, it is equivalent to the notin tag.

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