user1355300 user1355300 - 4 years ago 150
PHP Question

PHP: Breaking the nested loop

I'm having problem with nested loop. I have multiple number of posts, and each post has multiple number of images.

I want to get total of 5 images from all posts. So I am using nested loop to get the images, and want to break the loop when the number reaches to 5. The following code will return the images, but does not seem to break the loop.



foreach($query->posts as $post){
if ($images = get_children(array(
'post_parent' => $post->ID,
'post_type' => 'attachment',
'post_mime_type' => 'image'))
){
$i = 0;
foreach( $images as $image ) {
..
//break the loop?
if (++$i == 5) break;
}
}
}

Answer Source

Unlike other languages such as C/C++, in PHP you can use the optional param of break like this:

break 2;

In this case if you have two loops such that:

while(...) {
   while(...) {
      // do
      // something

      break 2; // skip both
   }
}

break 2 will skip both while loops.

Doc: http://php.net/manual/en/control-structures.break.php

This makes jumping over nested loops more readable than for example using goto of other languages

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