PHP文件打開關(guān)閉及讀寫操作示例解析

bool fclose ( resource handle ) ;

?php
  $f_open =fopen("../file.txt.","rb");   //打開文件
  …  //對文件進(jìn)行操作
  fclose($f_open)   //操作完成后關(guān)閉文件        
?>

int readfile(string filename)

array file(string filename)

string file_get_contents(string filename[,int offset[,int maxlen]])

!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
html xmlns="http://www.w3.org/1999/xhtml">
head>
meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
title>讀取整個文件/title>
style type="text/css">
!--
body,td,th {
  font-size: 12px;
}
body {
  margin-left: 10px;
  margin-top: 10px;
  margin-right: 10px;
  margin-bottom: 10px;
}
-->
/style>/head>
body>
table border="1" cellspacing="0" cellpadding="0">
 tr>
  td width="280" height="25" align="right" valign="middle" scope="col">使用readfile()函數(shù)讀取文件內(nèi)容：/td>
  td height="25" align="center" valign="middle" scope="col">
  ?php readfile('tm.txt'); ?>  /td>
 /tr>
 tr>
  td height="25" align="right" valign="middle">使用file()函數(shù)讀取文件內(nèi)容：/td>
  td height="25" align="center" valign="middle">
  ?php
    $f_arr = file('tm.txt');
    foreach($f_arr as $cont){
      echo $cont."br>";
    }
  ?>/td>
 /tr>
 tr>
  td width="280" height="25" align="right" valign="middle" scope="col">使用file_get_contents()函數(shù)讀取文件內(nèi)容：/td>
  td height="25" align="center" valign="middle" scope="col">
  ?php

    $f_chr = file_get_contents('tm.txt');
    echo $f_chr;

  ?>/td>
 /tr>
/table>
/body>
/html>

string fgets( int handle [, int length] )

string fgetss ( resource handle [, int length [, string 
allowable_tags]] )

table width="200" border="0" cellspacing="0" cellpadding="0">
 tr>
  td height="20" align="center" valign="middle" scope="col">font color='red'>I am red./font>/td>
  td height="20" align="center" valign="middle" scope="col">font color='green'>I am green./font>/td>
 /tr>
 tr>
  td height="20" align="center" valign="middle">font color='black'>I am black./font>/td>
  td height="20" align="center" valign="middle">font color='pink'>I am pink. /font>/td>
 /tr>
/table>

!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
html xmlns="http://www.w3.org/1999/xhtml">
head>
meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
title>fgets和fgetss的區(qū)別/title>
style type="text/css">
!--
body,td,th {
  font-size: 12px;
}
body {
  margin-left: 10px;
  margin-top: 10px;
  margin-right: 10px;
  margin-bottom: 10px;
}
-->
/style>/head>
body>
div align="left">/div>
table border="1" cellspacing="0" cellpadding="0">
 tr>
  td height="30" align="right" valign="middle" scope="col">使用fgets函數(shù)：/td>
  td height="30" align="center" valign="middle" scope="col">
?php
  header("Content-Type:text/html;charset=utf-8");
  $fopen = fopen('fun.php','rb');
  while(!feof($fopen)){
    echo fgets($fopen);
  }
  fclose($fopen);
?> /td>
 /tr>
 tr>
  td height="30" align="right" valign="middle">使用fgetss函數(shù)：/td>
  td height="30" align="center" valign="middle">
  ?php
  $fopen = fopen('fun.php','rb');
  while(!feof($fopen)){
    echo fgetss($fopen);
  }
  fclose($fopen);
?> /td>
 /tr>
/table>
/body>
/html>

string fgetc ( resource handle )

string fread ( int handle, int length )

int fwrite ( resource handle, string string [, int length] )

int file_put_contents ( string filename, string data [, int 
flags])

!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
html xmlns="http://www.w3.org/1999/xhtml">
head>
meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
title>使用fwrite和file_put_contents函數(shù)寫入數(shù)據(jù)/title>
style type="text/css">
!--
body,td,th {
  font-size: 12px;
}
body {
  margin-left: 10px;
  margin-top: 10px;
  margin-right: 10px;
  margin-bottom: 10px;
}
-->
/style>/head>
body>
?php
header("Content-Type:text/html;charset=utf-8");
  $filepath = "05.txt";
  $str = "此情可待成追憶  只是當(dāng)時已惘然br>";
  echo "用fwrite函數(shù)寫入文件：";
  $fopen = fopen($filepath,'wb') or die('文件不存在');
  fwrite($fopen,$str);
  fclose($fopen);
  readfile($filepath);
  echo "p>用file_put_contents函數(shù)寫入文件：";
  file_put_contents($filepath,$str);
  readfile($filepath);
?>
/body>
/html>

 - bool copy( string path1, string path2)：將文件從path1復(fù)制到path2。如果成功，返回true，失敗則返回false。例如:copy('tm.txt','../tm.txt')


 - bool unlink( string filename )刪除文件，成功返回true，失敗則返回False。例如：unlink(‘./tm.txt')


 - int fileatime( string filename )返回文件最后一次被訪問的時間，時間以UNIX時間戳的方式返回。例如：fileatime('1.txt')


 - int filemtime( string filename )返回文件最后一次被修改的時間，時間以UNIX時間戳的方式返回。例如：date('Y-m-dH:i:s',filemtime('1.txt'))


 - int filesize( string filename )取得文件filename的大（bytes）。例如：filesize('1.txt')


 - array pathinfo(string name [, int options])返回一個數(shù)組，包含文件name的路徑信息。有dirname、basename和extension?？梢酝ㄟ^option設(shè)置要返回的信息，有PATHINFO_DIRNAME、PATHINFO_BASENAME和PATHINFO_EXTENSION。
默認(rèn)為返回全部。例如：
$arr =pathinfo('/tm/sl/12/5/1.txt');
foreach($arras$method=>$value{
  echo$method.“:”.$value.“br>”;
}



 - string realpath ( string filename )返回文件filename的絕對路徑。如c:\tmp\…\1.txtrealpath('1.txt')


 - array stat ( string filename )返回一個數(shù)組，包括文件的相關(guān)信息，如上面提到的文件大小、最后修改時間等
 $arr = stat('1.txt');
 foreach($arr as $method => $value){
   echo $method.": ".$value."br>";
 }