PHP经典循环代码
PHP经典循环代码2009-07-31 17:58
for($counter = 1; $counter <= 6; $counter++) //循环6次
{
print("counter is $counter
\n"); //打印6次
}
?>
for的高级运用
print("距离星期一还有几天?\n");
print("
- \n");
- " . date("l", $currentDate) . "\n");
}
print("
for($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
$currentDate += (60 * 60 * 24)) //当前时间加上1天
{
print("
?>
函数的简单调用:
function printBold($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
function makeBold($inputText) //定义function makeBold()函数
{
$boldedText = "";
$boldedText .= $inputText;
$boldedText .= "";
return($boldedText); //返回变量$boldedText
}
print("这行没有加重!!!
\n"); //直接打印字符串
print(makeBold("这行被加重了!!!") . "
\n");//调用function makeBold()函数
print("这行没有加重!!!
\n"); //直接打印字符串
?>
有默认参数的函数
function printColored($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
function checkInteger($Number)
{
if($Number > 1)
{
return(checkInteger($Number-1));
}
elseif($Number < 0)
{
return(checkInteger((-1)*$Number-1));//取绝对值,把负数按整数分析
}
else
{
if(($Number > 0) AND ($Number < 1))
{
return("当然不是");
}
else
{
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?" . checkInte
ger(-9.2) . "
\n");
?>
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
?>
获取数组中的元素
$monthName = array(
1=>"January", "February", "March",
"April", "May", "June",
"July", "August", "September",
"October", "November", "December",
"Jan"=>"January", "Feb"=>"February",
"Mar"=>"March", "Apr"=>"April",
"May"=>"May", "Jun"=>"June",
"Jul"=>"July", "Aug"=>"August",
"Sep"=>"September", "Oct"=>"October",
"Nov"=>"November", "Dec"=>"December",
"January"=>"January", "February"=>"February",
"March"=>"March", "April"=>"April",
"May"=>"May", "June"=>"June",
"July"=>"July", "August"=>"August",
"September"=>"September", "October"=>"October",
"November"=>"November", "December"=>"December"
);
print("Month 5 is " . $monthName[5]. "
\n");
print("Month Aug is " . $monthName["Aug"] . "
\n");
print("Month June is " . $monthName["June"] . "
\n");
?>