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Homephp教程php手册新手学php必收藏的几个经典代码

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经典循环例子



经典循环例子



    for($counter = 1; $counter     {
        print("counter is $counter
\n");    //打印6次
    }   
?>




for的高级运用


for的高级运用



    /*
    ** 打印必要的说明文字
    */
    print("距离星期一还有几天?\n");
    print("
    \n");
        for($currentDate = date("U");             //定义$currentDate时间格式
            date("l", $currentDate) != "Monday";     //判断是不是当前系统时间是Monday
            $currentDate += (60 * 60 * 24))        //当前时间加上1天
        {
            /*
            ** 打印时间名称
            */
            print("
  1. " . date("l", $currentDate) . "\n");
        }

        print("
\n");
?>



函数的简单调用:



简单的函数




    function printBold($inputText)            //定义function printBold()
    {
        print("" . $inputText . "");    ////打印$inputText
    }
    print("这行没有加重!
\n");            //直接打印字符串
    printBold("这行加重了!!!");            //调用function printBold()函数
    print("
\n");
    print("这行没有加重!
\n");            //直接打印字符串
?>



有返回值的函数


有返回值的函数




    function makeBold($inputText)        //定义function makeBold()函数
    {
        $boldedText = "";
        $boldedText .= $inputText;
        $boldedText .= "
";
        return($boldedText);        //返回变量$boldedText
    }
    print("这行没有加重!!!
\n");    //直接打印字符串   
    print(makeBold("这行被加重了!!!") . "
\n");//调用function makeBold()函数
    print("这行没有加重!!!
\n");    //直接打印字符串
?>




有默认参数的函数


有默认参数的函数




    function printColored($Text, $Color="black")        //定义function函数
    {
        print("$Text");    //获取字符串的内容和颜色
    }
    printColored("这是黑颜色的字!");            //调用function函数
    print("

\n");
    printColored("这是蓝颜色的字!", "blue");            //调用function函数
    print("
\n");
?>




用的规算法判断是否是整数



判断整数



    function checkInteger($Number)
    {
        if($Number > 1)
        {
            /* 整数减1仍然是整数 */
            return(checkInteger($Number-1));
        }
        elseif($Number         {
            /* 对于一个负数,*/
            /* 可以分析它的绝对值*/
            return(checkInteger((-1)*$Number-1));//取绝对值,把负数按整数分析
        }
        else
        {
            if(($Number > 0) AND ($Number             {
                return("当然不是");
            }
            else
            {
                /* 0 和 1 是整数       */
                /* 根据相关数学定义 */
                return("是的");
            }
        }
    }
    print("0是整数吗?" .
        checkInteger(0) . "
\n");
    print("7是整数吗? " .
        checkInteger(7) . "
\n");
    print("3.5呢?" . checkInteger(3.5) . "
\n");
    print("那么-5呢?" . checkInteger(-5) . "
\n");
    print("还有-9.2?" . checkInteger(-9.2) . "
\n");
?>


初始化数组



初始化数组



    $monthName = array(1=>"January", "February", "March",//初始化一个数组
        "April", "May", "June", "July", "August",
        "September", "October", "November", "December");
    print(" 英语的“5月”是 $monthName[5]
\n");//打印数组中的第6个元素
?>


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