How to call functions in thinkphp

thinkphp template calls the function method:

{变量|函数1|函数2|函数3=参数1,参数2,参数3,###}

is the 4th parameter, which represents the replacement of the variable with the 4th parameter

Example:

{$username|substr=0,3}取标题中前3个字符 {$times|date='Y-m-d H:i:s'，###}将times时间戳转换为日期格式

Usage of colon execution function: output method and execute return value

{:U('user/insert')}

Example:

{:time()} 会输出当前日期格式 ，会被解析成 

Usage of wavy line function: execution method but Do not output

{~function()}

Example:

{~substr("aaaaaaa",3)} 执行后不会输出，会背解析成 

{$Think.get.url中get过来的参数} {$Think.server.server中的变量} {$Think.session.session中的id|md5} 如果需要的话还可以对值MD5一下 {$Think.cookie.cookie中的id}

{$Think.config.db_host} 读取config中的配置信息 {($title)?($title):'当前没有值'} 当前参数若没有值，则显示后面的描述

 aaaaaa bbbbbbbbb 没有数据 

a等于3a不等于3 a的长度等于1a长度不等于1

变量a值在1,2,3,4范围内就打印 变量a值不在1,2,3,4范围内就打印

or use ###

a在1,2,3,4范围内 //type改为notin就是不在，该方法可替代in和notin

a变量为空 a变量不为空

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