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Homephp教程PHP源码6个容易被忽略的smarty使用技巧

标签:capture, fetch, php, smarty

1,capture标签

capture的中文意思是抓取,它的作用是抓取模板输出的数据,当我们需要它的时候,调用它,以得到抓取数据的目的。例子:


{capture name=test}

{/capture}


{$smarty.capture.test}




说明:
在{capture name="test"}和{/capture}之间的内容被存储到变量$test中,该变量由name属性指定.在模板中通过 $smarty.capture.test 访问该变量.如果没有指定name 属性,函数默认将使用"default"作为参数,这一点很jquery中的clone

2,config_load标签

config_load可以直接将文件中的内容读取出来,这样可以省掉assign这一步。


test.csv:

pageTitle ="config_load_test"
bodyBgColor ="#eeeeee"
img ="girl.jpg"
width="100"
height="100"

index.tpl:

{config_load file="test.csv"}

{#pageTitle#}






上述过程中如果出现这样的问题Warning: Smarty error: unable to read resource, 请查看一下,你的test.csv是不是放在smarty的配置目录中,默认配置目录是configs


/**
* The directory where config files are located.
*
* @var string
*/
var $config_dir = 'configs';



3,literal标签的使用

做web开发,难免会写一些JS,jquery代码。js和jquery里面都会{}这样的符号,smarty会不会把它理解成php的变量呢?如果你不加literal标签的话,smarty肯定会把它理解变量了,加了就不会,例如:


{literal}
function getAbsLeft(e){
var l=e.offsetLeft;
while(e=e.offsetParent)l+=e.offsetLeft;
return l;
}

function getAbsTop(e){
var t=e.offsetTop;
while(e=e.offsetParent)t+=e.offsetTop;
return t;
}
{/literal}



4,php标签

当你习惯了assign后,你有没有想过,在模板文件里面直接写php代码呢,我想有的时候你肯定很想吧。例如:


{php}
global $result;
foreach($result as $key=>$value){
echo"key=$key,value=>$value
";
}
{/php}



5,strip标签

strip标签去除标签内的空格和回车,这一点我觉得,做手机开发的朋友肯定用的到,因为全角空格有可能会导致整个页面错乱,甚至是一个空白页面。手机屏幕小,估计用smarty的可能性也比较小。


{strip}

strip

{/strip}


6,fetch标签

fetch标签根php的file_get_contents挺想的,都可以把文件中的内容读出来,并且是个字符串的形势


{fetch file="./aaaa.txt"assign="result"}
{if is_array($result)}
is array
{else if}
not array
{/if}

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