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Posted By

evanwalsh on 10/04/08


Tagged

array empty separator explode evan walsh


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jamesming


Explode a string and return an array with no empty elements

 / Published in: PHP
 

URL: http://nothingconcept.com

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  1. <?php
  2. /*
  3. 	Function: eexplode
  4.  
  5. 	Explodes an string and removes any empty 
  6. 	elements in the resulting array
  7.  
  8. 	Parameters: 
  9. 		$separator - The separator used to explode the $string
  10. 		$string - The string to explode
  11.  
  12. 	Returns:
  13. 		An array with no empty elements
  14.  
  15. 	Example:
  16. 		print_r(explode(":","evan:walsh:"));
  17.  
  18. 		Array(
  19. 			[0] => evan
  20. 			[1] => walsh
  21. 			[2] => 
  22. 		);
  23.  
  24. 		print_r(eexplode(":","evan:walsh:"));
  25.  
  26. 		Array(
  27. 			[0] => evan
  28. 			[1] => walsh
  29. 		);
  30.  */
  31. function eexplode($separator,$string){
  32. 	$array = explode($separator,$string);
  33. 	foreach($array as $key => $val){
  34. 		if(empty($val)){
  35. 			unset($array[$key]);
  36. 		}
  37. 	}
  38. 	return $array;
  39. }

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Posted By: koncept on October 5, 2008

You may be interested in mapping the exploded array with trim to avoid a situation like this:

print_r(eexplode(":","evan:walsh: :"));

Some thoughts:

function eexplode($separator,$string){
    $array = array_map('trim',explode($separator,$string));
    foreach($array as $key => $val){
        if($val == "") unset($array[$key]);
    }
    return array_values($array); // resets keys
}

print_r(eexplode(":",": : evan:walsh: :"));
Posted By: koncept on October 5, 2008

You could also do something like this, but it all depends on if you want to maintain breaks, spaces, tabs, etc ...


function eexplode($separator,$string) {
    return preg_split("/\s*${separator}\s*/",$string,-1,PREG_SPLIT_NO_EMPTY);
}
print_r(eexplode(':',"evan:\nwalsh:\n:\t:\x20:"));

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