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。