Selecting custom indexes in an array

Question

I have a nested array containing a combination of words and numbers. It looks conceptual . I need to handle only numbered indexes like 15 and 28 . I suppose this means that I cannot use the foreach (or is there a way I could). How do you do this?

 myarray = ( someindex = ( field1 = field2 = ); 15 = ( field1 = field2 = ); 28 = ( field1 = field2 = ); anothertext = ( field1 = field2 = ); ); 

Answer 1

 foreach($myarr as $key => $item) { if(is_int($key)) { // Do processing here } } 

Yes, this will go through each element of the array, so if you want to process the other elements separately, you can simply add an else to the block.

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Edit: Changed is_numeric to is_int . See Comments for an explanation.

Answer 2

You can use foreach

 foreach($myarray as $key=>$value) { if(is_int($key)) { //process the entry as you want } } 

Answer 3

You can use FilterIterator with foreach:

 class IntKeyFilterIterator extends FilterIterator { public function accept() { return is_int(parent::key()); } } $it = new IntKeyFilterIterator(new ArrayIterator($array)); foreach ($it as $value) { // Will only have those with int keys } 

Answer 4

Another version. Grep the source array for any purely numeric keys, then loop over that array of results and do the processing.

 $keys = preg_grep('/^\d+$/', array_keys($myarray)) { foreach($keys as $key) { doSomething($myarray[$key]); }