显示数据库中blob类型的图片，小弟我图片显示不出来

<?php  <br />include_once dirname(dirname (dirname ( __FILE__ ))). '/yeqztsys1.0/utilityfunction/SqlHelp.class.php';<br />include_once dirname(dirname (dirname ( __FILE__ ))). '/yeqztsys1.0/Comm.class.php';<br /><br />$SqlHelper = new SqlHelp ( 'read', 'qztoa' );<br />$sql = "select * from qzt_image";<br />$query = $SqlHelper->query($sql );<br />$query_num = $SqlHelper->num_rows ($query );<br /><br />$rows = array ();  <br />$retarr = array (); <br />$query =$SqlHelper->query ( $sql );<br />if($query)<br />{<br />$arr_teainfo2 = array ();<br />while ( $arr_teainfo = $SqlHelper->fetch_assoc($query) ) {<br />$arr_teainfo2 [] = $arr_teainfo;<br />$Id=$arr_teainfo["Id"];<br />echo $arr_teainfo["Id"];<br />echo "<IMG SRC=\"Second.php3?Id=$Id\">"; <br /><br />}<br />}<br /><br /><br /><br />?>  <br />

<?php  <br />include_once dirname(dirname (dirname ( __FILE__ ))). '/yeqztsys1.0/utilityfunction/SqlHelp.class.php';<br />include_once dirname(dirname (dirname ( __FILE__ ))). '/yeqztsys1.0/Comm.class.php';<br /><br />$SqlHelper = new SqlHelp ( 'read', 'qztoa' );<br />$sql = "select * from qzt_image where Id=10";<br />$query = $SqlHelper->query($sql );<br />$query_num = $SqlHelper->num_rows ($query );<br /><br />$rows = array ();  <br />$retarr = array (); <br />$query =$SqlHelper->query ( $sql );<br />if($query)<br />{<br />$arr_teainfo2 = array ();<br />while ( $arr_teainfo = $SqlHelper->fetch_assoc($query) ) {<br />$arr_teainfo2 [] = $arr_teainfo;<br />$Id=$arr_teainfo["Id"];<br />$imagetype=$arr_teainfo["imagetype"];<br />//echo $arr_teainfo["images"];<br />//Header( "Content-type: $imagetype"); <br />header('Content-type: $imagetype');<br />echo $arr_teainfo["images"];<br /><br />}<br />}<br /><br />?>   <br />