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。