Remove multiple items from PageArray

[Robin S]

There is a remove method for WireArray/PageArray that removes a single given item from the array. But how about removing all the items in one PageArray from another? So basically like PHP's array_diff for PageArray - any suggestions for this?

[elabx]

I kind of had this problem, and solve it using a "NOT" selector when retrieving the array. 

https://processwire.com/talk/topic/12798-remove-multiple-items-from-pagearray/

Though I know this is not exactly what you are asking since it's not dealing exactly with the array, but thought it could help.

[BitPoet]

$largePargeArray->removeItems($subsetPageArray);

should work as PageArray inherits from WireArray.

[Robin S]

Thanks for the replies.

@elabx: Yeah, I'm already doing a similar workaround using the ->not method.

$page_array_1 = $pages->find(selector_1);
// do some stuff with $page_array_1
$page_array_2 = $pages->find(selector_2);
// do some stuff with $page_array_2
// then to subtract $page_array_1 from $page_array_2...
$page_array_2->not(selector_1);

But it seems wrong to have to use the same selector again when you already have the PageArray you want to remove. I figured there has to be a better way...

...and there is, but it's not in the docs or cheatsheet. Thanks BitPoet.

[szabesz]

...and there is, but it's not in the docs or cheatsheet. Thanks BitPoet.

I recommend using kongondo's ApiGen Docs, for example 3.x:

http://kongondo.github.io/ProcessWireAPIGen/devns/class-PageArray.html

Ryan's doc pages should be considered "for introduction purposes only". We cannot expect him to keep it up-to-date