iterate array

Hello!

I want to get the product of all elements in the array except $number

Ihave this simple code.

$arr = array(2,5,8,3);

$size_arr = count($arr);

$number = 3;

for((int) $i=0; $i<$size_arr; $i++){

	if($arr[$i] != $number) 
	{
		$new_arr[] = $arr[$i];
		$multiply *= $arr[$i];
	} 

}

echo $multiply; //Notice: Undefined variable: multiply in ...

echo "<br>";

print_r ($new_arr); //Array ( [0] => 2 [1] => 5 [2] => 8 )

PHP:

Thanx!

 

how I would do it?

$arr = array(2,5,8,3);
$number = 3;
$new_arr = array();$multiply = 0;
foreach ($arr as $val) {
    if($val != $number) {        array_push($new_arr,$val);        if ($multiply==0) {		$multiply = $val;	}	else {		$multiply *= $val;	}            } 
}
echo $multiply; //Notice: Undefined variable: multiply in ...
echo "<br>";
print_r ($new_arr); //Array ( [0] => 2 [1] => 5 [2] => 8 )

PHP:

 

exellent. good job!

 

You can use existing functionality:

$new_array = $array= array(2,5,8,3);
$number = 3;

$key = array_search($number, $new_array);
if ($key !== false) { unset($new_array[$key]); }

echo array_product($new_array);
echo '<br />';
print_r($new_array);

PHP: