PHP:文件系统

<span><?php
</span><span>if</span>($fp<span>=</span><span><em>fopen</em></span>(<span>"I:/Test/abc.txt"</span>,<span>"r"</span>)){
    $file_info<span>=</span><span><em>fstat</em></span>($fp);
    <span>echo </span><span>"<pre class="brush:php;toolbar:false;">"</span>;
    <span><em>print_r</em></span>($file_info);
    <span>echo </span><span>"

<img src="http://image.codes51.com/Article/image/20150815/20150815174750_8160.jpg" alt="">

<pre class="brush:php;toolbar:false;"Courier New'; font-size:16.5pt"><span><?php
</span>$file_path<span>=</span><span>"I:/Test/bbc.txt"</span>;
<span>//</span><span宋体'">首先判断文件是否存在；
</span><span>if</span>(<span><em>file_exists</em></span>($file_path)){
    <span>//</span><span宋体'">为移植性考虑，强烈建议在用</span><span> fopen() </span><span宋体'">打开文件时总是使用</span><span> 'b' </span><span宋体'">标记
</span><span宋体'"></span>$fp<span>=</span><span><em>fopen</em></span>($file_path,<span>"rb"</span>);
    $con<span>=</span><span><em>fread</em></span>($fp,<span><em>filesize</em></span>($file_path));
    <span>echo </span><span>"the content of file is: <br/>"</span>;
    <span>//</span><span宋体'">转换换行符；
</span><span宋体'"></span>$con<span>=</span><span><em>str_replace</em></span>(PHP_EOL,<span>"<br/>"</span>,$con);
    <span>echo </span>$con;
}<span>else</span>{
    <span>echo </span><span>" no file exists"</span>;
}
<span><em>fclose</em></span>($fp);

<span>//*********</span><span宋体'">第二种读取方式</span><span>***********************
</span><span>//file_get_contents</span><span宋体'">函数会读取整个文件内容（内存足够大），并且会自动关闭指针；
</span>$con<span>=</span><span><em>file_get_contents</em></span>($file_path);
$con<span>=</span><span><em>str_replace</em></span>(PHP_EOL,<span>"<br/>"</span>,$con);
<span>echo </span><span>"<br> "</span><span>.</span>$con;
<span>//**********</span><span宋体'">第三种读取方式，循环读取</span><span>*********
</span>$fp<span>=</span><span><em>fopen</em></span>($file_path,<span>'rb'</span>);
$buffer<span>=</span><span>10</span>;
$str<span>=</span><span>""</span>;
<span>while</span>(<span>!</span><span><em>feof</em></span>($fp)){
    $str<span>.=</span><span><em>fread</em></span>($fp,$buffer);
}
<span>echo </span>$str;
<span><em>fclose</em></span>($fp);

<img src="http://image.codes51.com/Article/image/20150815/20150815174751_0348.jpg" alt="">

<pre class="brush:php;toolbar:false;"Courier New'; font-size:16.5pt"><span><?php
</span><span>//</span><span宋体'">以数组形式输出配置文件；对数据库链接有用；
</span><span>//</span><span宋体'">&#26684;式与</span><span>php.ini</span><span宋体'">相同；
</span>$arr<span>=</span><span><em>parse_ini_file</em></span>(<span>"db.ini"</span>);
<span><em>print_r</em></span>($arr);

<img src="http://image.codes51.com/Article/image/20150815/20150815174751_1286.jpg" alt="">