note 79449 deleted from ref.array by felipe

Note Submitter: ashwin dot date at tekdi dot net 

----

This function will multiply all elements in an array with a number or float you specify. You can also multiply elements in an array with corresponding elements in another array. I have used the index checker script by Nicolai Bloch.

<?php   
	//Check for numeric array
	function isNumeric($ar) {
	  $keys = array_keys($ar);
	  natsort($keys); //String keys will be last
	  return is_int(array_pop($keys));
	}
	
	//Check for associative array
	function isAssoc($ar) {
	  $keys = array_keys($ar);
	  natsort($keys); //Numeric keys will be first
	  return is_string(array_shift($keys));
	}
	
	// Multiply elements of $array
	// @arg $array is the array to perform multiplication on
	// @arg $input - If it is a number, all elements from $array are multipled by $input
	// If $input is an array, elements in $array are multiplied by corresponding elements $input
	// 
	
	function array_multiplier($array, $input, $maintain_index = true) {
		if (is_array($input)) {
			$array_values 	= array_values($array);
			$array_keys		= array_keys($array);
			$input_values 	= array_values($input);
			
				if (count($array_values) == count($input_values)) {
					for ($i=0;$i<=(count($array_values));$i++) {
						if (isAssoc($array) && $maintain_index) {
						$return->$array_keys[$i] = $array_values[$i] * $input_values[$i];
						} else {
						$return[$array_keys[$i]] = $array_values[$i] * $input_values[$i];
						}
					}		
				} else {
					$return = 'Both arrays need to be of same size';
				}
		
		} elseif (is_float($input) || is_int($input)) {
			foreach ($array as $k=>$v) {
				$return->$k = $v * $input;
			}
		} else {
			$return = 'Multiplier not defined';
		}
	return $return;
	
	}

?>