<HTML>
<HEAD>
<TITLE>访问文件时间属性</TITLE>
</HEAD>
<BODY>
<?
$LastAccess = fileatime("data.txt");
print("文件最后的存取时间为：");
print(date("l F d, Y", $LastAccess));
print("<br>");
?>
<?
$LastA = filectime("data.txt");
print("文件最后的改变时间：");
print(date("l F d, Y", $LastA));
print("<br>");
?>
<?
$LastB = filemtime("data.txt");
print("文件最后的修改时间：");
print(date("l F d, Y", $LastB));
print("<br>");
?>
</BODY>
</HTML>
<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>
<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">
");
// 创建表格的头
print("<TR><font color='red'>
");
print("<TH>文件名</TH>
");
print("<TH>文件的大小</TH>
");
print("</font></TR>
");
$myDirectory = opendir("."); // 建立操作目录的句柄
// 读出目录中的每一个子项
while($entryName = readdir($myDirectory))
{
print("<TR>");
print("<TD>$entryName</TD>");
print("<TD ALIGN="right">");
print(filesize($entryName));
print("</TD>");
print("</TR>
");
}
closedir($myDirectory); // 关闭目录
print("</TABLE>
");
?>
</BODY>
</HTML>
<HTML>
<HEAD>
<TITLE>取得浏览器的信息</TITLE>
</HEAD>
<BODY>
<?php
function list_array ($array) //定义函数
{
while (list ($key, $value) = each ($array))
{
$str= "<b>$key:</b> $value<br>
";
}
return $str;
}
echo "$HTTP_USER_AGENT<hr>
";
$browser = get_browser();
print("<br>");
echo list_array ((array) $browser);
?>
</BODY>
</HTML>
<HTML>
<HEAD>
<TITLE>PHP相关信息</TITLE>
</HEAD>
<BODY>
<?
phpinfo();
?>
</BODY>
</HTML>
<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>
<HTML>
<HEAD>
<TITLE>数组排序的使用</TITLE>
</HEAD>
<BODY>
<?
// 构造一个数组变量
$users = array("bob"=>"Yobert",
"steve"=>"Btephen",
"jon"=>"Aonathon");
for(reset($users); $index=key($users); next($users))
{
print("$index : $users[$index] <BR>
");
}
print("<hr>");
// 使数组排序
asort($users);
// 打印排序后的数组
for(reset($users); $index=key($users); next($users))
{
print("$index : $users[$index] <BR>
");
}
?>
</BODY>
</HTML>
<HTML>
<HEAD>
<TITLE>常用数组函数</TITLE>
</HEAD>
<BODY>
<?
$colors = array("red", "green", "blue","yellow");
print("数组的个数：".count($colors)."<br>");//数组的个数
print("数组的当前值：".current($colors)."<br>");//当前的值
end($colors);
print("数组的最后一个的值：".current($colors)."<br>");
print("<hr>");
$slice = each($colors);//
print("each()函数的使用："."<br>");
print($slice[0] . "====" . $slice[1] . "<BR>
");
print($slice['key'] . "====" . $slice['value'] . "<BR>
");
?>
</BODY>
</HTML>
<HTML>
<HEAD>
<TITLE>常用字符串函数(一)</TITLE>
</HEAD>
<BODY>
<?
$first = "abc";
$second = "aBc";
if(strcmp($first, $second) == 0)//字串比较
{
print("字符串相等:"."<hr>");
}
else
{
print("字符串不相等"."<hr>");
}
?>
<?
print("a short string ".strlen("a short string")."<hr>");//字串长度
?>
<?
$text = "hello world";
print(strpos($text, "w")."<hr>");//寻找字串中某字元最先出现处
?>
</BODY>
</HTML>
<HTML>
<HEAD>
<TITLE>常用字符串函数(二)</TITLE>
</HEAD>
<BODY>
<?
$text = "My dog's name is Angus.";
//print Angus
print(substr($text, 17, 5)."<hr>");//取出子串
?>
<?
//切开字串
// create a demo string
$line = "leon atkinson leon@clearink.com";
// loop while there are still tokens
for($token = strtok($line, " ");
$token != "";
$token = strtok(" "))
{
print("token: $token<BR>
");
}
?>
<?
//传回字串中某字串开始处至结束的字串
$text = "Although this is string, it's not very long.";
print("<hr>".strstr($text, ","));
?>
</BODY>
</HTML>
<HTML>
<HEAD>
<TITLE>常用字符串函数(三)</TITLE>
</HEAD>
<BODY>
<?
//颠倒字串
print("abcdefg 颠倒 ");
print(strrev("abcdefg")."<hr>");
//小写字串
print("小写: ".strtolower("Hello World")."<hr>");
//大写字串
print("大写: ".strtoupper("Hello World")."<hr>");
//去空格
$text = " whitespace ";
print(""" . trim($text) . """);
?>
</BODY>
</HTML>
<HTML>
<HEAD>
<TITLE>编码和解码函数</TITLE>
</HEAD>
<BODY>
<?
$data = "VGhpcyBpcyBhIAptdWx0aS1saW5lIG1lc3NhZ2UK";//解码前的值
print ($data);
print(base64_decode($data)); //进行解码
?>
<?
print("<hr>");
$text = "这是一个多行信息
";
print ($text);
print(base64_encode($text)); //编码
?>
</BODY>
</HTML>
<HTML>
<HEAD>
<TITLE>常用数学函数(一)</TITLE>
</HEAD>
<BODY>
<?
print(abs(-13));//打印绝对值
?>
<?
// 从 -1 到1打印acos函数的值
print("<TABLE BORDER="1">
");
print("<TR><TH>x</TH><TH>acos(x)</TH></TR>
");
for($index = -1; $index <= 1; $index += 0.25)
{
print("<TR>
");
print("<TD>$index</TD>
");
print("<TD>" . acos($index) . "</TD>
");
print("</TR>
");
}
print("</TABLE>
");
?>
<?
// 从 -1 到 1打印asin函数的值
print("<TABLE BORDER="1">
");
print("<TR><TH>x</TH><TH>asin(x)</TH></TR>
");
for($index = -1; $index <= 1; $index += 0.25)
{
print("<TR>
");
print("<TD>$index</TD>
");
print("<TD>" . asin($index) . "</TD>
");
print("</TR>
");
}
print("</TABLE>
");
?>
</BODY>
</HTML>
<HTML>
<HEAD>
<TITLE>常用时间函数(二)</TITLE>
</HEAD>
<BODY>
<?
print("pi=".pi());
print("<br>");
print("sin(0.5 * pi())=".sin(0.5 * pi()));
print("<br>");
print("cos(2 * pi())=".cos(2 * pi()));
print("<br>");
//打印从1到100中间的10个随机的数
for($index = 0; $index < 10; $index++)
{
print(rand(1,100) . "<BR>
");
}
?>
</BODY>
</HTML>
<HTML>
<HEAD>
<TITLE>日期检查函数</TITLE>
</HEAD>
<BODY>
<?
if(checkdate(2,18,1970))//检查日期函数
{
print("2,18,1970 :"."这是一个正确的日期格式");
}
else
{
print("这不是一个正确的日期格式");
}
if(checkdate(52,18,1970))//检查日期函数
{
print("这是一个正确的日期格式");
}
else
{
print("52,18,1970 :"."这不是一个正确的日期格式");
}
?>
</BODY>
</HTML>
<HTML>
<HEAD>
<TITLE>常用时间函数(一)</TITLE>
</HEAD>
<BODY>
<?
print(date("h:i A l"));
print("<BR>
");
print(date("F dS, Y"));
?>
<?
$current_date = getdate(time());
print("<hr>");
printf("%d:%d:%d",
$current_date["hours"],
$current_date["minutes"],
$current_date["seconds"]);
?>
</BODY>
</HTML>
<HTML>
<HEAD>
<TITLE>常用时间函数(二)</TITLE>
</HEAD>
<BODY>
<?
print("开始时间:". microtime() . "<BR>
");
for($index = 0; $index < 10; $index++)
{
print("tick ");
}
print("<br>"."停止: " . microtime() . "<BR>
");
?>
<?
$CurrentHour = date("h");
print("从现在开始50小时以后为: ");
print(date("h:i A l F dS, Y",
mktime($CurrentHour+50)));
print("<BR>
");
?>
<?
$CurrentTime = time();
print($CurrentTime);
?>
</BODY>
</HTML>
<HTML>
<HEAD>
<TITLE>程序暂停函数</TITLE>
</HEAD>
<BODY>
<?
print(microtime());
sleep(10); //程序暂停10s
print("<br>
");
print(microtime());
print("<hr>");
print(microtime());
usleep(30); //暂定30ms
print("<br>
");
print(microtime());
?>
</BODY>
</HTML>