1 <?php 2 $DOCUMENT_ROOT =$_SERVER['DOCUMENT_ROOT']; 3 ?> 4 5 <html> 6 <head> 7 <title>Bob's Auto Parts -Customer Orders </title> 8 </head> 9 <body>10 <h1 id="Bob-s-Auto-Parts">Bob's Auto Parts</h1>11 <h2 id="Customer-Orders">Customer Orders</h2>12 13 <?php14 /*15 $a=56;16 if(!is_double ($a)) //测试is_int、is_double 、函数17 echo "<p><strong>isn't double</strong ></p>";18 echo gettype($a).'<br/>';19 settype($a,'double');20 echo gettype($a).'<br/>';21 */22 23 @$fp =fopen("$DOCUMENT_ROOT/orders/orders.txt",'rb');24 if (!$fp){25 echo"<p><strong>No orders pending.26 please try again later.</strong></p>";27 exit ;28 }29 30 /*31 isset ();32 33 empty()34 35 */36 //读取每行37 while (!feof($fp)){38 $order = fgets($fp,1024); //fgets()每次读取一行，遇到\n 、eof 、或者是998b结束。默认1k=1024b39 echo $order."<br/>"; //fgetss() 和fgets()一样的功能，但是能过滤掉包含php和html的标记40 } //fgetss(resource fp,int length,string[allowable_tags]) 把不过滤的标记放在allowable_tags中41 //$order = fgetss($fp,999,"<p>,<br/>");42 // fgetcsv($fp,1024,"\t") 意思是遇到换行43 44 /*45 读取整个文件，46 readfile("$DOCUMENT_ROOT/orders/orders.txt");47 fpassthru($fp) ； //fp是一个指针48 $filearray =file("$DOCUMENT_ROOT/orders/orders.txt") 49 //功能和readfile一样，但是每一行是字符串数组的一个元素50 */ 51 52 /*53 通过字符来输出整个文件54 while(!feof($fp))55 $char =fgetc($fp);56 if(!feof($fp))57 echo ($char =="\n"?<br/>:$char); 58 */ 59 // fread($fp,int length) 读取任意长度，或者到eof 60 61 /*62 file_exists("$DOCUMENT_ROOT/orders/orders.txt");63 filesize();64 unlink("$DOCUMENT_ROOT/orders/orders.txt") //删除一个文件65 66 rewind($fp); //重新跳到开始指针67 fseek ($fp); //找到位置 字节数68 ftell ($fp); //显示出位置69 70 71 */ 72 73 ?>74 </body> 
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