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Posted By

mattlowden on 09/25/10

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Last Edited at 09/25/10 07:29pm

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array_merge_replace

/ Published in: PHP
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Function for deep merging multiple arrays

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  1. function array_merge_replace(array $base_array, array $merge_array){
  2.  
  3. 	$new_array = array();
  4.  
  5. 	$key_list = array_unique( array_merge( array_keys( $base_array ), array_keys( $merge_array) ) );
  6.  
  7. 	foreach($key_list as $k)
  8. 	{
  9.  
  10. 		if( !array_key_exists($k, $base_array) && array_key_exists($k, $merge_array) )
  11. 		{
  12. 			$new_array[$k] = $merge_array[$k];
  13. 		}
  14. 		elseif( array_key_exists($k, $base_array) && !array_key_exists($k, $merge_array) )
  15. 		{
  16. 			$new_array[$k] = $base_array[$k];
  17. 		}
  18. 		elseif( array_key_exists($k, $base_array) && array_key_exists($k, $merge_array) )
  19. 		{
  20. 			if( is_array($base_array[$k]) && is_array($merge_array[$k]) )
  21. 			{
  22. 				$new_array[$k] = array_merge_replace($base_array[$k], $merge_array[$k]);
  23. 			}
  24. 			else
  25. 			{
  26. 				$new_array[$k] = $merge_array[$k];
  27. 			}
  28. 		}
  29.  
  30. 	}
  31.  
  32. 	return $new_array;
  33.  
  34. }

URL: http://www.mattlowden.com/blog/2010/02/deep-merging-two-arrays-in-php/

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