how can I make a function like pow in php

Question

I wanted to make function that could work like pow() but I wasn't succeed . it's my code:

function ipow($rishe,$tavan){
  if (is_numeric($rishe) & is_numeric($tavan)) {
    for ($i=1; $i <= $tavan ; $i++) {
      $hesab = 1;
      $hesab *= $rishe;
      return $hesab;
    }
  } else {
    $invalid_rishe = gettype($rishe);
    $invalid_tavan = gettype($tavan);
    echo "This function gives 2 numeric prameter.";
  }
}
echo ipow(2,3);

echo ipow(2,3);

cane someone help me to make a function like pow()?

Answer 1

You were pretty close, you need to take 2 lines out of the for loop, like this:

Your code fragment

for ($i=1; $i <= $tavan ; $i++) {
  $hesab = 1;
  $hesab *= $rishe;
  return $hesab;
}

First of all, the return statement stops execution the first time it executes, effectively doing just once the multiplication. Also you want to initilize $hesab = 1 outside the loop, because there it's reinitializing on each loop iteration.

Should be like this

$hesab = 1;
for ($i=1; $i <= $tavan ; $i++) {
  $hesab *= $rishe;
}
return $hesab;