推广数组并匹配？

Question

How would I iterate through an array (300+ items, imported via simplexml) and pull out every item that has a certain $x->channel->item->title and put that into a different array?

I can't make heads or tails of the haystack needle thing or how to push arrays

Say I have an array (needle) like: array("3332","3300","3493","8380") and I want to match if any of those appear through the big array (haystack). How do I do this?

Answer 1

You have to iterate over your big array, and check for the value of $x->channel->item->title. If it meets your criteria, push it into the new array:

$theArray; // Your 300+ array
$lookFor = array('firstthing', 'second thing', 'third thing');
$newArray = array();

foreach($theArray as $x) {
    if ( in_array($x->channel->item->title, $lookFor) ) {
        array_push($newArray, $x);
    }
}