PHP中TAL模板引擎语法的解析(代码)

//定义talData变量
$talData = array();

$talData['title'] = 'title1';
$talData['key'] = 'key1';
$talData['href'] = 'xxx.html';
$talData['html'] = '<h1>h1标题</h1>';
$talData['fun'] = function($key=''){
    return $key === 'key1'? true : false;
};
//两维数组
$talData['list1'] = array(
    array('id'=>'1', 'title'=>'标题1'),
    array('id'=>'2', 'title'=>'标题2'),
    array('id'=>'3', 'title'=>'标题3'),
    array('id'=>'4', 'title'=>'标题4')
);

//输出的数据结构
{"title":"title1","key":"key1","href":"xxx.html","html":"
h1\u6807\u9898<\/h1>","fun":{},"list1":[{"id":"1","title":"\u6807\u98981"},{"id":"2","title":"\u6807\u98982"},{"id":"3","title":"\u6807\u98983"},{"id":"4","title":"\u6807\u98984"}]}

<p tal:define="global title talData/title; key talData/key">
    ${title} && ${key}
</p>
${title} && ${key}
<!-- 结果 -->
<p>title1 && key1</p>
title1 &&

<p tal:define="global fname string:fname1 string; lname string:lname1 string;">
    ${fname} && ${lname}
</p>
${fname} && ${lname}
<!-- 结果 -->
<p>fname1 string && lname1 string</p>
fname1 string &&

<p tal:define="global hello string:hello $fname welcome on this page">
    ${hello}
</p>
或
<p tal:define="global hello string:hello ${fname} welcome on this page">
    ${hello}
</p>
<!-- 结果 -->
<p>hello fname1 string welcome on this page</p>

<p tal:define="global rand php: rand(1, 4)">
    ${rand}
</p>
<!-- 结果 -->
<p>2</p>

<tal:block>
    <p>渲染1</p>
</tal:block>
<tal:block tal:replace="">
不渲染这里
</tal:block>
<tal:block tal:replace="talData/title">
    <p>不渲染这里</p>
</tal:block>
<p>${talData/title}</p>
<!-- 结果 -->
<p>渲染1</p>
title1
<p>title1</p>

<p tal:content="talData/title">
    test data<span>tips</span>
</p>
<!-- 结果 -->
<p>title1</p>

<p class="p p_${talData/title}">${talData/title}</p>
<!-- 结果 -->
<p class="p p_title1">title1</p>

<a href="http://www.foo.com" title="some foo link" tal:attributes="href talData/href; title talData/title" tal:content="talData/key">sample link</a>
<!-- 结果 -->
<a href="xxx.html" title="title1">key1</a>

<span tal:on-error="string: 当前数据不存在" tal:content="talData/key">key 已经是定义了</span>
<span tal:on-error="string: 当前数据不存在" tal:content="talData/ky">ky 没有定义的</span>
<!-- 结果 -->
<span>key1</span>
当前数据不存在

<p tal:condition="php: true" tal:content="talData/title">标题</p>
<p tal:condition="php: talData['key'] == 'key1'" tal:content="talData/key">关键词</p>
<p tal:condition="php: key == 'key1'" tal:define="key talData/key" tal:content="talData/key">关键词</p>
<p tal:condition="talData/key" tal:content="talData/key">关键词</p>
<p tal:condition="talData/fun" tal:content="talData/key">关键词</p>
<!-- 结果 -->
<p>title1</p>
<p>key1</p>
<p>key1</p>
<p>key1</p>

<ul tal:repeat="item talData/list1">
    <li tal:condition="php: repeat.item.index == 0">
        repeat/item/key: ${repeat/item/key} ；(如果talData/list1是一组联合对象,返回item的键)<br/>
        repeat/item/index: ${repeat/item/index} ；(返回索引号(0~count-1))<br/>
        repeat/item/number: ${repeat/item/number} ；(返回索引号(1~count))<br/>
        repeat/item/even: ${repeat/item/even} ；(如果是偶数,true)<br/>
        repeat/item/odd: ${repeat/item/odd} ；(如果是奇数,true)<br/>

        repeat/item/start: ${repeat/item/start} ；(如果是第一个元素,true)<br/>
        repeat/item/end: ${repeat/item/end} ；(如果是最后一个元素,true)<br/>
        repeat/item/length: ${repeat/item/length} ；(返回talData/list1里面元素个数)<br/>
        -------------
    </li>
    <li tal:condition="php: repeat.item.index > 0" tal:content="item/title">列表li</li>
</ul>
<!-- 结果 -->
<li>
repeat/item/key: 0 ；(如果talData/list1是一组联合对象,返回item的键)<br/>
repeat/item/index: 0 ；(返回索引号(0~count-1))<br/>
repeat/item/number: 1 ；(返回索引号(1~count))<br/>
repeat/item/even: 1 ；(如果是偶数,true)<br/>
repeat/item/odd: 0 ；(如果是奇数,true)<br/>
repeat/item/start: 1 ；(如果是第一个元素,true)<br/>
repeat/item/end: 0 ；(如果是最后一个元素,true)<br/>
repeat/item/length: 4 ；(返回talData/list1里面元素个数)<br/>
</li>
<li>标题2</li>
<li>标题3</li>
<li>标题4</li>

<p tal:omit-tag="php: false">
    omit-tag值为真，不出现当前p标签，否则就出现当前p标签
</p>
<p tal:omit-tag="php: true">
    omit-tag值为真，不出现当前p标签，否则就出现当前p标签
</p>
<!-- 结果 -->
<p>omit-tag值为真，不出现当前p标签，否则就出现当前p标签</p>
omit-tag值为真，不出现当前p标签，否则就出现当前p标签

<tal:block tal:repeat="x php:range(1,10)" tal:content="x">文字会出现十次</tal:block>
<!-- 结果 -->
12345678910

<!-- 在pWeb/_macro/common.html文件中代码 -->
<tal:block metal:define-macro="WinPageData">
    <script type="text/javascript">
        window.WinPageData = ${structure WinPageData};
    </script>
</tal:block>

<tal:block metal:use-macro="pWeb/_macro/common.html/WinPageData">
    当前内容会被宏替换掉
    <script type="text/javascript">
        window.WinPageData = {};
    </script>
</tal:block>
<p metal:use-macro="${路径变量}/macros.html/main_menu"></p>

<!-- 在pWeb/_macro/mlog.html文件中代码 -->
<tal:block metal:define-macro="mobile">
    <script>
        <metal:block define-slot="mlog_page">
        var mlog_page = 'mobile_other';
        </metal:block>
        var mlog_track = function(){};
    </script>
    <script src='xxx.js'></script>
</tal:block>

<tal:block metal:use-macro="pWeb/_macro/mlog.html/mobile">
    <tal:block metal:fill-slot="mlog_page">
        var mlog_page = 'mobile_index';
    </tal:block>
</tal:block>

<!-- 在pWeb/_macro/mlog.html文件中代码 -->
<tal:block metal:define-macro="conent">
    <p>${title}</p>
    <p>${key}</p>
</tal:block>

<tal:block metal:use-macro="pWeb/_macro/mlog.html/conent"  tal:define="title '标题'; key '关键词'"></tal:block>

<p class="footer" phptal:cache="3h">...</p>
有效期可以有选择的跟随'per'参数来定义多少个缓存被共享，使用'per url'分别针对每个url复制元素.
<ol id="breadcrumbs" phptal:cache="1d per url">...</ol>

php:htmlentities(foo)
php:'string ${varReplaced}'
php:'string ${some.path().to[0].var}'
php:foo.a.b.c(e).htmlentities(SomeClass::staticMethod())
php:SomeClass::ConstOfClass
php:SomeClass::$staticVar

<span tal:condition="not: logged">not logged</span>
<!-- 结果 -->
<span>not logged</span>

<span tal:condition="exists: talData/title" tal:content="talData/title">存在</span>
<!-- 结果 -->
<span>title1</span>

<span tal:define="myVar talData/title | default">
default my var value
</span>
<p tal:content="some/var | other/path | default">
没有var，没有找到path
</p>
<a href="unknown.html" title="Unknown page" tal:attributes="href item/href | default; title talData/title | default" tal:content="item/title | default">Unknown page</a>
<!-- 结果 -->
<p>没有var，没有找到path</p>
<a href="unknown.html" title="title1">Unknown page</a>

<p tal:content="talData/html"></p>
<p tal:content="structure talData/html"></p>
<!-- 结果 -->
<p><h1>h1标题</h1></p>
<p><h1>h1标题</h1></p>

<p>${talData/html}</p>
<p>${structure talData/html}</p>
<!-- 结果 -->
<p><h1>h1标题</h1></p>
<p><h1>h1标题</h1></p>