来自:http://hi.baidu.com/dckhello/item/d62b16d8994bf93449e1ddb0
经典循环例子
<HTML>
<HEAD>
<TITLE>经典循环例子</TITLE>
</HEAD>
<BODY>
<?
for($counter = 1; $counter <= 6;
$counter++)
//循环6次
{
print("<B>counter is $counter</B><BR>\n");
//打印6次
}
?>
</BODY>
</HTML>
for的高级运用
<HTML>
<HEAD>
<TITLE>for的高级运用</TITLE>
</HEAD>
<BODY>
<?
/*
** 打印必要的说明文字
*/
print("<B>距离星期一还有几天?</B>\n");
print("<OL>\n");
for($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("<LI>" . date("l",
$currentDate) . "\n");
}
print("</OL>\n");
?>
</BODY>
</HTML>
函数的简单调用:
<HTML>
<HEAD>
<TITLE>简单的函数</TITLE>
</HEAD>
<BODY>
<FONT
SIZE=5>
<?
function
printBold($inputText)
//定义function printBold()
{
print("<B>" . $inputText .
"</B>"); ////打印$inputText
}
print("这行没有加重!<BR>\n");
//直接打印字符串
printBold("这行加重了!!!");
//调用function printBold()函数
print("<BR>\n");
print("这行没有加重!<BR>\n");
//直接打印字符串
?>
</FONT>
</BODY>
</HTML>
有返回值的函数
<HTML>
<HEAD>
<TITLE>有返回值的函数</TITLE>
</HEAD>
<BODY>
<FONT
SIZE=5>
<?
function
makeBold($inputText) //定义function
makeBold()函数
{
$boldedText =
"<B>";
$boldedText .=
$inputText;
$boldedText .=
"</B>";
return($boldedText);
//返回变量$boldedText
}
print("这行没有加重!!!<BR>\n");
//直接打印字符串
print(makeBold("这行被加重了!!!") . "<BR>\n");//调用function
makeBold()函数
print("这行没有加重!!!<BR>\n");
//直接打印字符串
?>
</SIZE>
</BODY>
</HTML>
有默认参数的函数
<HTML>
<HEAD>
<TITLE>有默认参数的函数</TITLE>
</HEAD>
<BODY>
<FONT
SIZE=5>
<?
function printColored($Text,
$Color="black")
//定义function函数
{
print("<FONT
COLOR=\"$Color\">$Text</FONT>");
//获取字符串的内容和颜色
}
printColored("这是黑颜色的字!");
//调用function函数
print("<BR><BR>\n");
printColored("这是蓝颜色的字!",
"blue");
//调用function函数
print("<BR>\n");
?>
</SIZE>
</BODY>
</HTML>
用的规算法判断是否是整数
<HTML>
<HEAD>
<TITLE>判断整数</TITLE>
</HEAD>
<BODY>
<?
function checkInteger($Number)
{
if($Number >
1)
{
/*
整数减1仍然是整数
*/
return(checkInteger($Number-1));
}
elseif($Number <
0)
{
/*
对于一个负数,*/
/*
可以分析它的绝对值*/
return(checkInteger((-1)*$Number-1));//取绝对值,把负数按整数分析
}
else
{
if(($Number > 0) AND ($Number <
1))
{
return("当然不是");
}
else
{
/* 0 和 1 是整数
*/
/* 根据相关数学定义
*/
return("是的");
}
}
}
print("<B>0是整数吗?</B>"
.
checkInteger(0) .
"<BR>\n");
print("<B>7是整数吗?</B> "
.
checkInteger(7) .
"<BR>\n");
print("<B>3.5呢?</B>" .
checkInteger(3.5) . "<BR>\n");
print("<B>那么-5呢?</B>" . checkInteger(-5) .
"<BR>\n");
print("<B>还有-9.2?</B>" .
checkInteger(-9.2) .
"<BR>\n");
?>
</BODY>
</HTML>
初始化数组
<HTML>
<HEAD>
<TITLE>初始化数组</TITLE>
</HEAD>
<FONT
SIZE=5>
<?
$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<B>
$monthName[5]
</B>。<BR>\n");//打印数组中的第6个元素
?>
</FONT>
</BODY>
</HTML>
获取数组中的元素
<HTML>
<HEAD>
<TITLE>获取数组中的元素</TITLE>
</HEAD>
<?
$monthName = array(
/*定义$monthName[1]到$monthName[12]*/
1=>"January", "February",
"March",
"April", "May",
"June",
"July", "August",
"September",
"October",
"November", "December",
/*定义$monthName["Jan"]到$monthName["Dec"]*/
"Jan"=>"January",
"Feb"=>"February",
"Mar"=>"March",
"Apr"=>"April",
"May"=>"May",
"Jun"=>"June",
"Jul"=>"July",
"Aug"=>"August",
"Sep"=>"September",
"Oct"=>"October",
"Nov"=>"November", "Dec"=>"December",
/*定义$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"
);
/*打印相关的元素*/
print("Month
<B>5</B> is <B>" . $monthName[5].
"</B><BR>\n");
print("Month
<B>Aug</B> is <B>" . $monthName["Aug"] .
"</B><BR>\n");
print("Month
<B>June</B> is <B>" . $monthName["June"] .
"</B><BR>\n");
?>
</BODY>
</HTML>
创建一个多维数组
<HTML>
<HEAD>
<TITLE>创建一个多维数组</TITLE>
</HEAD>
<?
$Cities =
array(
//二维数组array()
"华北地区"=>array(
"北京市",
"天津市",
"石家庄"
),
"西北地区"=>array(
"西安",
"拉萨"
)
);
print("华北地区: ".$Cities["华北地区"][0]);
//打印$Cities["华北地区"][0]
?>
</BODY>
</HTML>
PHP
4.0实现表格状打印
<HTML>
<HEAD>
<TITLE>实现表格状打印</TITLE>
</HEAD>
<BODY>
<?
/*
** 数据表格化
*/
print("<TABLE bgcolor=‘ffccoo‘ BORDER=\"1\">\n"); //
表格开始
for($Row=1; $Row <= 12; $Row ++)
{
print("<TR>\n"); //
开始行
// do each
column
for($Column=1; $Column
<= 12; $Column ++)
{
print("<TD>");//开始列
print($Row *
$Column);//表格元素乘积
print("</TD>");
}
print("</TR>\n"); // 行结束
}
print("</TABLE>\n"); // 表格结束
?>
</BODY>
</HTML>
查看系统的一些变量
<HTML>
<HEAD>
<TITLE>查看PHP的环境变量</TITLE>
</HEAD>
<BODY>
<?
print("你正在用文件的名字为: ");
print(__FILE__);
print("
<BR>\n");
print("<hr>");
print("你的操作系统为: ");
print(PHP_OS);
print("<hr>");
print("你的php的版本为:
");
print(PHP_VERSION)
?>
</BODY>
</HTML>
打开本地或者远程文件
<HTML>
<HEAD>
<TITLE>打开本地或者远程文件</TITLE>
</HEAD>
<BODY>
<?
print("<H3>通过http协议打开文件</H3>\n");
// 通过 http
协议打开文件
if(!($myFile = fopen("d:web/web/php/test/data.txt",
"r")))
{
print("文件不能打开");
exit;
}
while(!feof($myFile))
//循环
{
// 按行读取文件中的内容
$myLine =
fgetss($myFile, 255);
print("$myLine <BR>\n");
}
//
关闭文件的句柄
fclose($myFile);
?>
</BODY>
</HTML>
打开文件的几种方式比较
<HTML>
<HEAD>
<TITLE>读取文件内容</TITLE>
</HEAD>
<BODY>
<?
// 打开文件同时打印文件的每一个字符
if($myFile = fopen("data.txt",
"r"))
{
while(!feof($myFile))
{
$myCharacter =
fgetc($myFile);
print($myCharacter);
}
fclose($myFile);
}
?>
<?
print("<hr>");?>
<?
//
打开文件同时打印文件的每一行
if($myFile = fopen("data.txt",
"r"))
{
while(!feof($myFile))
{
$myLine
= fgets($myFile,
255);
print($myLine);
}
fclose($myFile);
}
?>
<?
print("<hr>");?>
<?
/*
打开文件同时打印文件的每一行,
同时去掉取回字符串中的 HTML 语言
*/
if($myFile = fopen("data.txt",
"r"))
{
while(!feof($myFile))
{
$myLine
= fgetss($myFile,
255);
print($myLine);
}
fclose($myFile);
}
?>
</BODY>
</HTML>
访问文件常见属性
<HTML>
<HEAD>
<TITLE>访问文件常见属性</TITLE>
</HEAD>
<BODY>
<BR>
<?
print("文件的所有者(UID 值):");
print(fileowner("data.txt")."<br>");
print("文件的大小:");
print(filesize("data.txt")."<br>");
print("文件的类型:");
print(filetype("data.txt")."<br>");
?>
</BODY>
</HTML>
调用文本文件内容
<HTML>
<HEAD>
<TITLE>调用文本文件内容</TITLE>
</HEAD>
<BODY>
<CENTER>
<?
// 打开文件同时,打印每一行
$myFile = file(
"data.txt");
for($index = 0; $index < count($myFile);
$index++)
{
print($myFile[$index]."<BR>");
}
?>
</CENTER>
</BODY>
</HTML>
创建目录函数
<HTML>
<HEAD>
<TITLE>创建目录函数</TITLE>
</HEAD>
<BODY>
<?
if(mkdir("myDir1", 0777))
//创建目录的函数
{
print("目录创建成功");
//目录建立成功
}
else
{
print("目录建立失败!");
//目录建立失败
}
?>
</BODY>
</HTML>
浏览目录
<HTML>
<HEAD>
<TITLE>浏览目录</TITLE>
</HEAD>
<BODY>
<?
// 使用表格浏览目录的结构
print("<TABLE
BORDER=\"1\">\n");
// 创建表格的头
print("<TR><font color=‘red‘>\n");
print("<TH>文件名</TH>\n");
print("<TH>文件的大小</TH>\n");
print("</font></TR>\n");
$myDirectory =
opendir("."); //
建立操作目录的句柄
// 读出目录中的每一个子项
while($entryName = readdir($myDirectory))
{
print("<TR>");
print("<TD>$entryName</TD>");
print("<TD
ALIGN=\"right\">");
print(filesize($entryName));
print("</TD>");
print("</TR>\n");
}
closedir($myDirectory);
// 关闭目录
print("</TABLE>\n");
?>
</BODY>
</HTML>
PHP相关信息
<HTML>
<HEAD>
<TITLE>PHP相关信息</TITLE>
</HEAD>
<BODY>
<?
phpinfo();
?>
</BODY>
</HTML>
常用的数值判断函数
<HTML>
<HEAD>
<TITLE>常用的数值判断函数</TITLE>
</HEAD>
<BODY>
<?
//判断数组
$colors = array("red", "blue",
"green");
if(is_array($colors))
{
print("colors is an
array"."<br>");
}
//双精度数判断
$Temperature = 15.23;
if(is_double($Temperature))
{
print("Temperature is a
double"."<br>");
}
//整数判断
$PageCount = 2234;
if(is_integer($PageCount))
{
print("$PageCount is an
integer"."<br>");
}
//对象判断
class widget
{
var
$name;
var
$length;
}
$thing = new
widget;
if(is_object($thing))
{
print("thing is an
object"."<br>");
}
//字符判断
$Greeting = "Hello";
if(is_string($Greeting))
{
print("Greeting is a
string"."<br>");
}
?>
</BODY>
</HTML>
文件上传界面
<HTML>
<HEAD>
<TITLE>文件上传界面</TITLE>
</HEAD>
<BODY><TABLE><CENTER>
<?
if($UploadAction){
$UploadAction=0;
$TimeLimit=60;
/*设置超时限制时间默认时间为
30s,设置为0时为不限时 */
set_time_limit($TimeLimit);
If(($Upfile !=
"none")&&
($Upfile !=
""))
{
$Filepath="d:\web\web\php\test";
//上载文件存放路径
$FileName=$Filepath.$Upfile_name;
if($Upfile_size
<1024)
//上载文件大小
{$FileSize = (string)$Upfile_size .
"字节";}
elseif($Upfile_size <(1024 * 1024))
{
$FileSize =
number_format((double)($Upfile_size / 1024), 1) . "
KB";
}
else
{
$FileSize =
number_format((double)($Upfile_size/(1024*1024)),1)."MB";
}
if(!file_exists($FileName))
{
if(copy($Upfile,$FileName))
{unlink($Upfile);
echo
"<br><br>\n";
echo
"文件 $Upfile_name 已上载成功!";
echo "<br><br>\n";
echo
"文件位置:$FileName";
echo "<br><br>\n";
echo
"文件大小:$FileSize";
echo
"<br><br>\n";
}
else
{echo "文件
$Upfile_name上载失败!"; }
}
else
{echo "文件
$Upfile_name已经存在!"; }
}
else
{echo "你没有选择任何文件上载!";
}
set_time_limit(30);
//恢复默认超时设置
}
?>
<FORM ENCTYPE = "multipart/form-data"
NAME = "SubmitForm"
ACTION = "default.php" METHOD =
"POST">
<INPUT TYPE = "hidden" NAME = "MAX_FILE_SIZE" VALUE
="1000000">
<INPUT TYPE = "hidden" NAME = "UploadAction" VALUE =
"1">
<TR><TD><INPUT NAME = "Upfile" TYPE = "file"
SIZE = "30"></TD>
</TR><TR><TD><INPUT
NAME = "submit" VALUE = "提交" TYPE = "submit">
<INPUT NAME = "reset"
VALUE = "重置" TYPE =
"reset"></TD>
</TR></FORM></CENTER></TABLE>
</BODY>
</HTML>