📄 function.php-fread.htm
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<td valign=middle nowrap><font color=e06060 size=+2><b>函数:fread()</b></font></td>
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<div align=right><a href="group.php-17.htm" alt="group.php?17">文件系统函数库</a></div><br><h1><font color=0000bb>fread</font></h1><p>
位组的方式读取文件。<p>
<font color=ff8000>语法:</font> <b>string fread(int fp, int length);</b><p>
<font color=ff8000>返回值:</font> 字符串<p>
<font color=ff8000>函数种类:</font> 文件存取<p>
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<tr><td align=left><font color=ff8000>内容说明</font></td></tr></table><p>本函数读到指定长度的位组或到文件尾 EOF。<p>
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<tr><td align=left><font color=ff8000>使用范例</font></td></tr></table><p><font color="#000000">
<font color="#0000BB"><?php<br>$filename </font><font color="#007700">= </font><font color="#DD0000">"/usr/local/myfile.txt"</font><font color="#007700">;<br></font><font color="#0000BB">$fd </font><font color="#007700">= </font><font color="#0000BB">fopen</font><font color="#007700">( </font><font color="#0000BB">$filename</font><font color="#007700">, </font><font color="#DD0000">"r" </font><font color="#007700">);<br></font><font color="#0000BB">$contents </font><font color="#007700">= </font><font color="#0000BB">fread</font><font color="#007700">(</font><font color="#0000BB">$fd</font><font color="#007700">, </font><font color="#0000BB">filesize</font><font color="#007700">(</font><font color="#0000BB">$filename</font><font color="#007700">));<br></font><font color="#0000BB">fclose</font><font color="#007700">( </font><font color="#0000BB">$fd </font><font color="#007700">);<br></font><font color="#0000BB">?></font>
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<tr><td align=left><font color=ff8000>参考</font></td></tr></table><p><a href="function.php-readfile.htm" alt="function.php?readfile">readfile()</a> <a href="function.php-fopen.htm" alt="function.php?fopen">fopen()</a> <a href="function.php-fclose.htm" alt="function.php?fclose">fclose()</a> <a href="function.php-fwrite.htm" alt="function.php?fwrite">fwrite()</a> <a href="function.php-fgets.htm" alt="function.php?fgets">fgets()</a> <a href="function.php-fgetss.htm" alt="function.php?fgetss">fgetss()</a> <a href="function.php-file.htm" alt="function.php?file">file()</a> <a href="function.php-fpassthru.htm" alt="function.php?fpassthru">fpassthru()</a> <a href="function.php-popen.htm" alt="function.php?popen">popen()</a> <a href="function.php-fsockopen.htm" alt="function.php?fsockopen">fsockopen()</a> <p><hr size=1><br>如果你对此手册有任何问题,请到下面网址提问: <a href="www.web745.com">WEB开发知识库</a> (<a href="http://www.web745.com">www.web745.com</a>)<p>
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