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'.$r.'
回复讨论(解决方案)
Home Backend Development PHP Tutorial 懂PHP的进来看看

懂PHP的进来看看

Jun 23, 2016 pm 02:21 PM

if($downhits==2)
{
echo '


  
        {loop $downfile $r}
            
  • {$r}


  •         {/loop}
            {loop $downfiles $r}
                
  • {$r}


  •         {/loop}
      
    ';
    }
    else
    {
    echo '

      
    {loop $downfile $r}
                
  • {$r}


  •         {/loop}
            {loop $downfiles $r}
                
  • {$r}


  •         {/loop}
      
    ';}
    ?>

    以上代码我在echo中输出   可是 这个$r和$downfiles 这个 貌似都没有反应 所以想问下在echo中怎么输出$r和$downfiles  也就在怎么调用或者说是语法吧

    回复讨论(解决方案)

    首先   PHP中单引号内的变量无法被解析为变量值

    所以你把你echo 'xxxxxxxxxxxx'换成 echo "xxxxxxxxxxx"即可(同时把内部的双引号换成单引号)

    其次... 不理解你这样的语句是在什么环境下使用能否正常循环... 上面的办法只针对你问的两个变量无法解析的问题.

    我不懂php,但我知道变量在单引号中不会取值,只把变量名作为字符串

    loop循环标签是PHPcms自定义的模板循环标签吧,这里的echo是将字符串输出到模板,和模板对应的控制器文件会分配$downfiles 这个变量,loop循环再将这个变量循环输出,$downfiles 是数组$r是里面的值。

    if($downhits==2)
    {
    echo '

    ';
      
            {loop $downfile $r}
                
  • {$r}


  •         {/loop}
            {loop $downfiles $r}
                
  • {$r}


  •         {/loop}
      echo '
    ';
    }
    else
    {
    echo '
    ';
      
    {loop $downfile $r}
                
  • {$r}


  •         {/loop}
            {loop $downfiles $r}
                
  • {$r}


  •         {/loop}
      echo '
    ';}
    ?>

    你再看看模板的用法。

    你这段是写在什么位置的。是写在action里还是写在模板里的。

    楼主是不是没闹明白程序和模板是要分开来搞的呀?

    你在程序里写html模板,然后把模板的参数带进去。这下倒好,你的html是显示了,但是,显示完是你的原始模板,都已经发送到客户端了,难不成你还想让客户段来解释你的{loop}{/loop}这样的代码?你又不是在写js.

    模板是有特定的模板函数来处理他的,最终他会在服务器端会被解释成php代码来执行。所以,你不要在程序里写模板代码。

    建议你这样。你把$downhits这个值传给模板。
    然后在模板中写:

    {if $downhits==2}<div class="downfile" style=" display:none;">	{loop $downfile $r}	    <li><h3 id="r">{$r}</h3></li>	{/loop}	{loop $downfiles $r}	    <li><h3 id="r">{$r}</h3></li>	{/loop}	  </div>{else}<div class="downfile" >	{loop $downfile $r}            <li><h3 id="r">{$r}</h3></li>        {/loop}        {loop $downfiles $r}            <li><h3 id="r">{$r}</h3></li>        {/loop}	  </div>{/if}
    Copy after login


    或者是你直接在php程序里这样写:
    if($downhits==2){	$html='<div class="downfile" style=" display:none;">';	foreach($downfile as $r){		$html.='<li><h3 id="r">'.$r.'</h3></li>';	}	foreach($downfiles as $r){		$html.='<li><h3 id="r">'.$r.'</h3></li>';	}	$html.='</div>';}else{	$html='<div class="downfile">';	foreach($downfile as $r){		$html.='<li><h3 id="r">'.$r.'</h3></li>';	}	foreach($downfiles as $r){		$html.='<li><h3 id="r">'.$r.'</h3></li>';	}	$html.='</div>';}
    Copy after login

    另外,div标签下面直接包含li标签,好像不合符html的写法吧。。。

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