學php必收藏的幾個經典代碼第1/2頁

最後更新：2018-12-08 來源：互聯網

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經典迴圈例子

<HTML>
<HEAD>
<TITLE>經典迴圈例子</TITLE>
</HEAD>
<BODY>
<?
for($counter = 1; $counter <= 6; $counter++) //迴圈6次
{
print("counter is $counter \n"); //列印6次
}
?>
</BODY>
</HTML>

for的進階運用
<HTML>
<HEAD>
<TITLE>for的進階運用</TITLE>
</HEAD>
<BODY>
<?
/*
** 列印必要的解說文字
*/
print("距離星期一還有幾天？\n");
print("<OL>\n");
for($currentDate = date("U"); //定義$currentDate時間格式
date("l", $currentDate) != "Monday"; //判斷是不是當前系統時間是Monday
$currentDate += (60 * 60 * 24)) //目前時間加上1天
{
/*
** 列印時間名稱
*/
print("<LI>" . date("l", $currentDate) . "\n");
}

print("</OL>\n");
?>
</BODY>
</HTML>

函數的簡單調用:

<HTML>
<HEAD>
<TITLE>簡單的函數</TITLE>
</HEAD>
<BODY>

<?
function printBold($inputText) //定義function printBold（）
{
print("" . $inputText . ""); ////列印$inputText
}
print("這行沒有加重！ \n"); //直接列印字串
printBold("這行加重了！！！"); //調用function printBold()函數
print(" \n");
print("這行沒有加重！ \n"); //直接列印字串
?>

</BODY>
</HTML>
有傳回值的函數
<HTML>
<HEAD>
<TITLE>有傳回值的函數</TITLE>
</HEAD>
<BODY>

<?
function makeBold($inputText) //定義function makeBold()函數
{
$boldedText = "";
$boldedText .= $inputText;
$boldedText .= "";
return($boldedText); //返回變數$boldedText
}
print("這行沒有加重！！！ \n"); //直接列印字串
print(makeBold("這行被加重了！！！") . " \n");//調用function makeBold()函數
print("這行沒有加重！！！ \n"); //直接列印字串
?>
</SIZE>
</BODY>
</HTML>

有預設參數的函數
<HTML>
<HEAD>
<TITLE>有預設參數的函數</TITLE>
</HEAD>
<BODY>

<?
function printColored($Text, $Color="black") //定義function函數
{
print("$Text"); //擷取字串的內容和顏色
}
printColored("這是黑顏色的字！"); //調用function函數
print(" \n");
printColored("這是藍顏色的字！", "blue"); //調用function函數
print(" \n");
?>
</SIZE>
</BODY>
</HTML>

用的規演算法判斷是否是整數

<HTML>
<HEAD>
<TITLE>判斷整數</TITLE>
</HEAD>
<BODY>
<?
function checkInteger($Number)
{
if($Number > 1)
{
/* 整數減1仍然是整數 */
return(checkInteger($Number-1));
}
elseif($Number < 0)
{
/* 對於一個負數，*/
/* 可以分析它的絕對值*/
return(checkInteger((-1)*$Number-1));//取絕對值，把負數按整數分析
}
else
{
if(($Number > 0) AND ($Number < 1))
{
return("當然不是");
}
else
{
/* 0 和 1 是整數 */
/* 根據相關數學定義 */
return("是的");
}
}
}
print("0是整數嗎？" .
checkInteger(0) . " \n");
print("7是整數嗎？ " .
checkInteger(7) . " \n");
print("3.5呢？" . checkInteger(3.5) . " \n");
print("那麼-5呢？" . checkInteger(-5) . " \n");
print("還有-9.2？" . checkInteger(-9.2) . " \n");
?>
</BODY>
</HTML>
初始化數組

<HTML>
<HEAD>
<TITLE>初始化數組</TITLE>
</HEAD>

<?
$monthName = array(1=>"January", "February", "March",//初始化一個數組
"April", "May", "June", "July", "August",
"September", "October", "November", "December");
print(" 英語的“5月”是 $monthName[5] 。 \n");//列印數組中的第6個元素
?>

</BODY>
</HTML>
擷取數組中的元素
<HTML>
<HEAD>
<TITLE>擷取數組中的元素</TITLE>
</HEAD>
<?
$monthName = array(
/*定義$monthName[1]到$monthName[12]*/
1=>"January", "February", "March",
"April", "May", "June",
"July", "August", "September",
"October", "November", "December",
/*定義$monthName["Jan"]到$monthName["Dec"]*/
"Jan"=>"January", "Feb"=>"February",
"Mar"=>"March", "Apr"=>"April",
"May"=>"May", "Jun"=>"June",
"Jul"=>"July", "Aug"=>"August",
"Sep"=>"September", "Oct"=>"October",
"Nov"=>"November", "Dec"=>"December",
/*定義$monthName["Jan"]到$monthName["Dec"]*/
"January"=>"January", "February"=>"February",
"March"=>"March", "April"=>"April",
"May"=>"May", "June"=>"June",
"July"=>"July", "August"=>"August",
"September"=>"September", "October"=>"October",
"November"=>"November", "December"=>"December"
);
/*列印相關的元素*/
print("Month 5 is " . $monthName[5]. " \n");
print("Month Aug is " . $monthName["Aug"] . " \n");
print("Month June is " . $monthName["June"] . " \n");
?>
</BODY>
</HTML>
建立一個多維陣列
<HTML>
<HEAD>
<TITLE>建立一個多維陣列</TITLE>
</HEAD>
<?
$Cities = array( //二維數組array（）
"華北地區"=>array(
"北京市",
"天津市",
"石家莊"
),
"西北地區"=>array(
"西安",
"拉薩"
)
);
print("華北地區: ".$Cities["華北地區"][0]); //列印$Cities["華北地區"][0]
?>
</BODY>
</HTML>

本文章原先以中文撰寫並發佈於 aliyun.com，亦設英文版本，僅作資訊用途。本網站不對文章的準確性，完整性或可靠性或其任何翻譯作出任何明示或暗示的陳述或保證。如對該文章有任何疑慮或投訴，請傳送電郵至 info-contact@alibabacloud.com 並提供相關疑慮或投訴的詳細說明。職員會於 5 個工作天內與您聯絡，一經驗證之後，即會刪除該侵權內容。

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