Initial data commit

Task/Trabb-Pardo-Knuth-algorithm/PHP/trabb-pardo-knuth-algorithm.php

@@ -0,0 +1,28 @@
+<?php
+// Trabb Pardo-Knuth algorithm
+// Used "magic numbers" because of strict specification of the algorithm.
+
+function f($n)
+{
+    return sqrt(abs($n)) + 5 * $n * $n * $n;
+}
+
+$sArray = [];
+echo "Enter 11 numbers.\n";
+for ($i = 0; $i <= 10; $i++) {
+    echo $i + 1, " - Enter number: ";
+    array_push($sArray, (float)fgets(STDIN));
+}
+echo PHP_EOL;
+// Reverse
+$sArray = array_reverse($sArray);
+// Results
+foreach ($sArray as $s) {
+    $r = f($s);
+    echo "f(", $s, ") = ";
+    if ($r > 400)
+        echo "overflow\n";
+    else
+        echo $r, PHP_EOL;
+}
+?>