Remove elements from arrays

[Jaswinder]

hi

I am having a multidimensional array in $a.

i get this result after using print_f

Array (
 [0] => Array ( [sno] => 4 [num1] => 45 [num2] => 45 [result] => 2025 )
 [1] => Array ( [sno] => 17 [num1] => 34 [num2] => 36 [result] => 1224 )
 [2] => Array ( [sno] => 2 [num1] => 78 [num2] => 5 [result] => 390 )
)

using foreach and converting into individual arrays

foreach($a as $key => $value)
	{
		print_r($key = $value); echo "<br/>";
         }

and the result is

Array ( [sno] => 4 [num1] => 45 [num2] => 45 [result] => 2025 )
Array ( [sno] => 17 [num1] => 34 [num2] => 36 [result] => 1224 )
Array ( [sno] => 2 [num1] => 78 [num2] => 5 [result] => 390 )

now i want to remove num1 and num2 elements from each array..

so that the resulting array contains 2 elements sno and result

i tried unset() but not getting result. any help

[bsmither]

You tried unset() specifically how?

Was:
foreach($a as $key => $value)
{
  print_r($key = $value); echo "<br/>";
}
 
Now try:
foreach($a as $key => $value)
{
  unset($a[$key]['num1'], $a[$key]['num2']);
  print_r($a[$key]); echo "<br/>";
}

According to the PHP manual for foreach(), $value is a copy from $a. In order to change $value that is actually part of $a, you would need:

foreach($a as $key => &$value)

Edited April 26, 2014 by bsmither

[Jaswinder]

Thanks for answer ,, That & helps