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<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\">\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>
<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>\n"; } return $str; } echo "$HTTP_USER_AGENT<hr>\n"; $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>\n"); } 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>\n"); } ?> </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] . "====" . $slice[1] . "<BR>\n"); print($slice[‘key‘] . "====" . $slice[‘value‘] . "<BR>\n"); ?> </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 $line = "leon\tatkinson\tleon@clearink.com"; // loop while there are still tokens for($token = strtok($line, "\t"); $token != ""; $token = strtok("\t")) { print("token: $token<BR>\n"); } ?> <? //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>"); $text = "这是一个多行信息\n"; print ($text); print(base64_encode($text)); //编码 ?> </BODY> </HTML>
<HTML> <HEAD> <TITLE>常用数学函数(一)</TITLE> </HEAD> <BODY> <? print(abs(-13));//打印绝对值 ?> <? // 从 -1 到1打印acos函数的值 print("<TABLE BORDER=\"1\">\n"); print("<TR><TH>x</TH><TH>acos(x)</TH></TR>\n"); for($index = -1; $index <= 1; $index += 0.25) { print("<TR>\n"); print("<TD>$index</TD>\n"); print("<TD>" . acos($index) . "</TD>\n"); print("</TR>\n"); } print("</TABLE>\n"); ?> <? // 从 -1 到 1打印asin函数的值 print("<TABLE BORDER=\"1\">\n"); print("<TR><TH>x</TH><TH>asin(x)</TH></TR>\n"); for($index = -1; $index <= 1; $index += 0.25) { print("<TR>\n"); print("<TD>$index</TD>\n"); print("<TD>" . asin($index) . "</TD>\n"); print("</TR>\n"); } print("</TABLE>\n"); ?> </BODY> </HTML>
<HTML> <HEAD> <TITLE>常用时间函数(二)</TITLE> </HEAD> <BODY> <? print("pi=".pi()); print("<br>"); print("sin(0.5 * pi())=".sin(0.5 * pi())); print("<br>"); print("cos(2 * pi())=".cos(2 * pi())); print("<br>"); //打印从1到100中间的10个随机的数 for($index = 0; $index < 10; $index++) { print(rand(1,100) . "<BR>\n"); } ?> </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>\n"); print(date("F dS, Y")); ?> <? $current_date = getdate(time()); print("<hr>"); printf("%d:%d:%d", $current_date["hours"], $current_date["minutes"], $current_date["seconds"]); ?> </BODY> </HTML>
<HTML> <HEAD> <TITLE>常用时间函数(二)</TITLE> </HEAD> <BODY> <? print("开始时间:". microtime() . "<BR>\n"); for($index = 0; $index < 10; $index++) { print("tick "); } print("<br>"."停止: " . microtime() . "<BR>\n"); ?> <? $CurrentHour = date("h"); print("从现在开始50小时以后为: "); print(date("h:i A l F dS, Y", mktime($CurrentHour+50))); print("<BR>\n"); ?> <? $CurrentTime = time(); print($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>\n"); print(microtime()); print("<hr>"); print(microtime()); usleep(30); //暂定30ms print("<br>\n"); print(microtime()); ?> </BODY> </HTML>
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原文地址:http://www.cnblogs.com/yxhblogs/p/4758756.html