CS479/579 - Web Programming II

Displaying ./code/Async-example/words.php

<?php
  function R($n) {
    return rand() % $n;
  }

  $match = isset($_GET['match'])? $_GET['match'] : null;

  $words = Array();
  $f = fopen("/usr/dict/words", "r");
  for($i=0; $s = fgets($f); $i++) {
    $words[$i] = trim($s);
  }

  if ($match) {
    $len=strlen($match);
    $ret = Array();
    $ridx = 0;

    for($i=0; $i < count($words); $i++) {
      if (strncmp($words[$i],$match,$len) == 0) {
        $ret[$ridx++] = $words[$i];
        if ($ridx > 9) break;
      }
    }
  } else {
    srand();
    $ret = $words[R(count($words))];
  }

  echo json_encode($ret);
?>