使用||递增和if语句

Question

我正在尝试使用if语句来回显内联样式。但是我只能让我的条件在任何1个数字上返回true，而不是数组，||分开等...

你能解释一下如何制作||版本和数组在我的条件中返回true。

// Works.
$counts = 0 ;
foreach ($posts as $post) : setup_postdata($post); $counts++; 
 if ($counts == 8) {echo 'counts equals your numbers';}
endforeach; 

// This does nothing.
$numbers = array(4,8);
$counts = 0 ;
foreach ($posts as $post) : setup_postdata($post); $counts++; 
 if ($counts == $numbers) {echo 'counts equals your numbers';}
endforeach; 

// Returns true for every iteration.
$counts = 0 ;
foreach ($posts as $post) : setup_postdata($post); $counts++; 
 if ($counts == 4 || 8) {echo 'counts equals your numbers';}
endforeach; 

Answer 1

||的语法是：

if ($counts == 4 || $counts == 8) {echo 'counts equals your numbers';}

Answer 2

使用PHP的内置in_array函数：

if ( in_array($counts, $numbers) ) {echo 'counts equals your numbers';}