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> (责任编辑:admin) |