PHP操作MySQL中BLOB字段的方法

<?php
  mysql_connect( "localhost", "root", "password"); //连接数据库
  mysql_select_db( "database"); //选定数据库
  //数据插入：
  $CONTENT="测试内容";  //$CONTENT为新闻内容
  $COMPRESS_CONTENT = bin2hex(gzcompress($CONTENT));
  $result=mysql_query( "insert into news (content) value (&#39;$COMPRESS_CONTENT&#39;)");//数据插入到数据库news表中
  //展示：
  $query = "select data from testtable where filename=$filename";
  $result = mysql_query($query);
  $COMPRESS_CONTENT=@gzuncompress($result["COMPRESS_CONTENT"]);
  echo $COMPRESS_CONTENT;
?>

<?php
mysql_connect( "localhost", "root", "password"); //连接数据库
mysql_select_db( "database"); //选定数据库
//存储：
$filename="" //这里填入图片路径
$COMPRESS_CONTENT = addslashes(fread(fopen($filename, "r"), filesize($filename)));//打开文件并规范化数据存入变量$data中
$result=mysql_query( "insert into news (content) value (&#39;$COMPRESS_CONTENT&#39;)");//数据插入到数据库test表中
//展示：
ob_end_clean();
Header( "Content-type: image/gif");
$query = "select data from testtable where filename=$filename";
$result = mysql_query($query);
echo $result["COMPRESS_CONTENT"];
?>