Question

It s difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.

Closed 11 years ago.

我有以下情况:

<a href="#"
   title="<?php the_sub_field( points_description ); ?>"
   class="<?php if(!empty(the_sub_field( points_description ))) {
                  echo  point-tooltip ; } ?>">

如果我只包括网站显示的对应部分,但当我增加部分(如果功能为<代码>><<>>>>)时,网站仅显示空白。

任何建议?

Answer 1

空闲只能与var一起工作。

空洞只能检查变数,因为任何其他因素都会造成 par误。换言之,以下工作不会奏效:空(国名)。

Answer 2

http://php.net/manual/en/Function.empty.php>rel=“nofollow”>empty() 只有在具有变数的情况下才能工作,因为这一功能也是对功能的界定。

3. 使以下法典可执行

// doesn t work :(
if(!empty(a_function($var)))
    do_stuff();

页: 1

//works :D
$temp = a_function($var);
if(!empty($temp))
    do_stuff();

友情链接