Home Backend Development PHP Tutorial Thinkphp模板标签if和eq的区别和比较实例分析_PHP

Thinkphp模板标签if和eq的区别和比较实例分析_PHP

May 30, 2016 am 08:45 AM
eq if thinkphp the difference template tag

本文实例讲述了Thinkphp模板标签if和eq的区别和比较。分享给大家供大家参考。具体分析如下:

在TP模板语言中。if和eq都可以用于变量的比较。总结以下几点:

1.两个变量的比较:

<if condition="$item.group_id eq $one.group_id">
<eq name="item.group_id" value="$one.group_id">

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前者的IF是判断失败的,用后者的(或)则OK。需要注意:name那里是不用加$变量符号的,而value那里要加$变量符号。

2.还有值为空(NULL)的时候:

<if condition="name neq 'NULL'">just a test</if>
<neq name="name" velue="">just a test</neq>

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前者的IF是判断失败的,用后者的(或)则可以识别null为""

3.多维数组且下标为0的时候:

<if condition="name.0 neq 'test'">just a test</if>
<eq name="name.0″ velue="test">just a test</eq>

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前者用IF是根本不能通过编译的,用后面的eq就可以

希望本文所述对大家基于ThinkPHP的php程序设计有所帮助。

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