Data update

Task/M-bius-function/PHP/m-bius-function.php

@@ -0,0 +1,29 @@
+<?php
+// Moebius function
+
+function moebius($n) {
+  $m = 1;
+  if ($n != 1) {
+    $f = 2;
+    do {
+      if ($n % ($f * $f) == 0) {
+        $m = 0;
+      } else {
+        if ($n % $f == 0) {
+          $m = -$m;
+          $n /= $f;
+        }
+        $f++;
+      }
+    } while ($f <= $n && $m != 0);
+  }
+  return $m;
+}
+
+for ($t = 0; $t <= 9; $t++) {
+  for ($u = 1; $u <= 10; $u++) {
+    echo str_pad(moebius(10 * $t + $u), 2, " ", STR_PAD_LEFT)."  ";
+  }
+  echo PHP_EOL;
+}
+?>