phparraysreplaceblacklist

Replace non-specified array values with 0

I want to replace all array values with 0 except work and home.

Input:

$array = ['work', 'homework', 'home', 'sky', 'door']

My coding attempt:

$a = str_replace("work", "0", $array);

Expected output:

['work', 0, 'home', 0, 0]

Also my input data is coming from a user submission and the amount of array elements may be very large.

Solution

  • this my final code

    //Setup the array of string
$asting = array('work','home','sky','door','march');

/**
Loop over the array of strings with a counter $i,
Continue doing this until it hits the last element in the array
which will be at count($asting)
*/
for($i = 0; $i < count($asting); $i++) {
//Check if the value at the 'ith' element in the array is the one you want to change
//if it is, set the ith element to 0
if ($asting[$i] == 'work') {
   $asting[$i] = 20;
} elseif($asting[$i] == 'home'){
    $asting[$i] = 30;

}else{
    $asting[$i] = 0;
}

echo $asting[$i]."<br><br>";

$total += $asting[$i];
}

echo $total;