php实例之按行读取文件内容

php逐行读取文件源代码如下：

<html>
<head>
<title>php实例之按行读取文件内容</title>
</head>
<body>
<?php
$filename = "test.txt";
$fp = fopen( $filename, "r" ) or die("Couldn't open $filename");
while ( ! feof( $fp ) ) {
   $line = fgets( $fp, 1024 );
   print "$line<br>";
}
?>
</body>
</html>

在看下面是个实例，该实例逐行读取文件中的数据并使用正则表达式处理每一行的数据，然后进行数据库操作。

$handle = @fopen("D:/public/test.txt", "r");
if ($handle) {
    while (!feof($handle)) {
    
        $str = fgets($handle, 4096);
       
  //$str = '#主单词1#';
  if(preg_match('/#(.+)#/',$str,$matches)){
     
     $di_word = $matches[1];
     $di_word = mysql_escape_string($di_word);
     $sql = " SELECT di_id FROM `du_index` WHERE di_word = '{$di_word}'";
     $result = mysql_query($sql);
     $row = mysql_fetch_row($result);
     $di_id =  $row[0];
     if (count($dy_word)>0){
      $sql = " INSERT INTO `du_yun` (`di_id`,`di_word`,`dy_word`,`dy_description`,`dy_status`,`dy_time`) VALUES";
      for ($i=0;$i<count($dy_word);$i++){
     $sql .= " ('{$di_id_1}','{$di_word_1}','{$dy_word[$i]}','{$dy_description[$i]}','1',now()),";
     
      }
      $result = mysql_query(substr($sql,0,-1).';');
      if ($result){}else{
      echo $sql . '<br />';
         }
     }
     $di_id_1 = $di_id;
     $di_word_1 = $di_word;
     $dy_word = $dy_description = array();
     $sql = '';
     continue;
  }; 
  //$str = '[志願者]參[與]人員';
  /* http://www.manongjc.com/article/1384.html */
  if (preg_match('/^\[(.+)\](.+)$/',$str,$matches)){
     $dy_word[]        = trim($matches[1]);
     $dy_description[] = trim($matches[2]);
     continue;
  }
  
 }
 if (count(dy_word)>0){
     $sql = " INSERT INTO `du_yun` (`di_id`,`di_word`,`dy_word`,`dy_description`,`dy_status`,`dy_time`) VALUES";
     for ($i=0;$i<count($dy_word);$i++){
       $sql .= " ('{$di_id_1}','{$di_word_1}','{$dy_word[$i]}','{$dy_description[$i]}','1',now()),";
       
     }
     $result = mysql_query(substr($sql,0,-1).';') or die(mysql_error());
        if ($result){}else{
      echo $sql . '<br />';
     }
 }
    fclose($handle);
}