Multiplying array element


 
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Old 04-15-2012
Multiplying array element

I am trying to take all the elements of an array and multiply them by 2, and then copy them to a new array. Here is what I have

Code:
i=0
for true in DMGLIST[@]
	do
	let DMGSIZES2[i]="${DMGSIZES[i]}"*2
	let i++
done
unset i

echo ${DMGSIZES2[@]}

It does the calculation correctly for the first element, but after that it doesn't return anything at all. DMGSIZES2 seems to have only one element.

I have also tried it without quotes, but I get the same problem.

Any insight is appreciated. Also, any suggestions for better ways to do this are welcome. Thanks!
 
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ARRAY_POP(3)								 1							      ARRAY_POP(3)

array_pop - Pop the element off the end of array

SYNOPSIS
mixed array_pop (array &$array) DESCRIPTION
array_pop(3) pops and returns the last value of the $array, shortening the $array by one element. Note This function will reset(3) the array pointer of the input array after use. PARAMETERS
o $array - The array to get the value from. RETURN VALUES
Returns the last value of $array. If $array is empty (or is not an array), NULL will be returned. ERRORS
/EXCEPTIONS This function will produce an error of level E_WARNING when called on a non-array. EXAMPLES
Example #1 array_pop(3) example <?php $stack = array("orange", "banana", "apple", "raspberry"); $fruit = array_pop($stack); print_r($stack); ?> After this, $stack will have only 3 elements: Array ( [0] => orange [1] => banana [2] => apple ) and raspberry will be assigned to $fruit. SEE ALSO
array_push(3), array_shift(3), array_unshift(3). PHP Documentation Group ARRAY_POP(3)