php实现每天自动变换随机问候语的方法

本文实例讲述了php实现每天自动变换随机问候语的方法。分享给大家供大家参考。具体分析如下：

这里预先定义一个php数组，里面存放一些随机问候语，调用的时候指定是按照天，月还是年来自动更换问候语，如果选择月，则会每月更换一条问候语显示，不用每个月手动更换了，并且这段php代码比使用JS实现对搜索引擎友好

    function RandomQuoteByInterval($TimeBase, $QuotesArray){
      // Make sure it is a integer
      $TimeBase = intval($TimeBase);
      // How many items are in the array?
      $ItemCount = count($QuotesArray);
      // By using the modulus operator we get a pseudo
      // random index position that is between zero and the
      // maximal value (ItemCount)
      $RandomIndexPos = ($TimeBase % $ItemCount);
      // Now return the random array element
      return $QuotesArray[$RandomIndexPos];
    }
    /*
    ** --> See the example section below for a
    **   detailed instruction.
    */

使用范例：

    // Use the day of the year to get a daily changing
    // quote changing (z = 0 till 365)
    $DayOfTheYear = date('z');
    // You could also use:
    // --> date('m'); // Quote changes every month
    // --> date('h'); // Quote changes every hour
    // --> date('i'); // Quote changes every minute
    // Example array with some random quotes
    $RandomQuotes = array(
      'No animals were harmed in the making of this snippet.',
      'Nice snippets',
      'The modulus operator rocks!',
      'PHP is cool.'
    );
    print RandomQuoteByInterval($DayOfTheYear, $RandomQuotes);

希望本文所述对大家的php程序设计有所帮助。