Question

我有一个简单的旁观:

foreach ( $posts as $index => $posts )

以及反之:

if( $index % 5 + 1 == 5 ) {
//do something 
}

我每页有15个员额,除了最后一点点,它应当做些什么,但我如何做?

So it becomes:

POST
POST
POST
POST
POST
DO SOMETHING
POST
POST
POST
POST
POST
DO SOMETHING
POST
POST
POST
POST
POST

Answer 1

If you know, you have 15 posts, and need every 5th but not the last... That means you need to make something with the 5th and 10th one, am i right? So why not check that?

if($index == 4 || $index == 9)

Answer 2

if( $index % 5 + 1 == 5 && $index != 14) {
//do something 
}

改变你的条件,使指数不等于你阵列的最后指数。这14或15条(取决于你何时从0或1开始)。

Answer 3

检查范围操作员,对这种情况非常有用。

http://php.net/manual/en/function.range.php

foreach (range(0, $index, 5) as $number) {
    // do something with $posts[$number]
}

Answer 4

红十字与红新月联会不需要联系阵列:

$posts=array(a,b,a,b,a,b,a,b,a,b,a,b,a,b,a);

for($i=0;$i<count($posts);$i++)
{
if($i % 5 + 1 == 5 && $i != count($posts) - 1)
{
echo $i." as ".$posts[$i];
}
}

这将消除最后的每一个员额,只重复第五个员额。

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