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如何使用PHP操作文件文件读取篇

Jun 13, 2016 am 10:26 AM
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听说要讨论,朋友邀写一下,希望大家见谅,水平有限:) 现在很多的朋友拥有自己免费的空间(毕竟中国穷人还是多的),而吝啬的ISP不给提供MYSQL, 于是聪明的朋友们就选择了----(FILE文件表数据库格式),其实是我自己个人这样定义的~ Access为文件表数据库,如果您在您的机器上只要加上个DSN就可以透过ODBC来存取您的ACCESS 内的数据。可是在网络中ISP不可能给你配置DSN的哦~,因此我们选择了采用文件来保存数据 FILE DATA。 兼顾内容: 1、实现数据库一些功能--(别指望象数据库那样哦~) 2、数据安全稳定 -- (需要程序来支持) 3、维护的便捷 -- (TOO UP) 这些内容要是一次写在这里,好象不太好~ 先从基础的说起~ 首先您需要个文本来保存,可以有以下几种方式来建立 1、 echo "info" >> File.txt 2、 fopen("file.txt","w/w+/a/a+"); 3、 UPLOAD YOUR FILE.txt 第一实现就是 exec() --- 用之前先看看PHPINFO()里是否禁止了此函数哦~ 第二 基本都支持啊,我想没哪个ISP把这个也给disable吧! 第三 老兄,将您本地的文件传上去吧~ 建立好文件了,以下就是对文件的操作了 对文件的操作简单的来说就是--读/写 其中更新/删除全包括在里面。 一、 这里我们先说一下文件的读取 信息保存到了数据文件内后需要读出来的,不读出来,写的再多也是无用,读取文件PHP提供了几种方式 1、fopen 2、file 3、fsockopen 具体的例子就摘抄一下了 1、$fp=fopen("text.txt","method"); 其中METHOD为 r - 以只读方式打开文件; 读取标志在文件第一个字符(相当于C中的文件指针). r+ - 以读/写方式打开文件; 读取标志在文件第一个字符(相当于C中的文件指针). w - 以写的方式打开文件; 将写标志放在首位,同时将文件大小设置为最小-0字节. 如果打开的文件不存在,则建立这个文件以提供写. w+ - 以读/写方式打开文件; 将写标志放在首位,同时将文件大小设置为最小-0字节. 如果打开的文件不存在,则建立这个文件以提供写 a - 以只写的方式打开文件; 将标志放在文件的EOF,所有添加的信息将在文件的最后,如果文件不存在则建立文件。 a+ -以读/写的方式打开文件;将标志放在文件的EOF,所有添加的信息将在文件的最后,如果文件不存在则建立文件。 此函数还可以打开http://,ftp://,udp://文件 其中http://,udp://应该以读的方式打开,否则将出错 对此函数有个小小的提示:请勿打开http://文件自身,否则会有小小麻烦~ $testfile="test.txt"; $fp=fopen($testfile,r); $outputtext=fgets($testfile,filesize($testfile)); echo "$testfile文本内容:".$outputtext; fclose($fp) ?> 2、 var $fp=array(); $fp=file("text.txt"); 这样的表达的含义大家一看就名白了,file()是将文件全部读取,然后存放到一个数组中 其中文件中每出现一个 (回车换行)则数组中多一个元素 file函数只有一个参数 file(filename) $testfile="test.txt"; $fp=file($testfile); while($int_a=0;$int_a
"; } print "$testfile文本内容: ".$info; ?> 3、 "; } else { fputs ($fp, "GET / HTTP/1.0 Host: www.php.net "); while (!feof($fp)) { echo fgets ($fp,128); } fclose ($fp); } ?> "; } else { fwrite($fp," "); echo fread($fp, 26); fclose($fp); } ?> 文件的读取暂时就到这里,下面该是文件的写入了....

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