session_start的问题
为什么我在页面中最开始的位置加上session_start();页面就什么都不显示了??
页面代码:
<?
//session_start();
?>
<html>
<body>
<p></p>
<form action="insert.php" method="post" name="form1">
<label for="textfield"></label>
<input name="user_name" type="text" id="user_name" >
<input name="user_pwd" type="password" id="user_pwd" >
<label for="textfield"></label>
<label for="textfield"></label>
<label for="textfield"></label>
<input type="submit" name="disp" value="显示">
</form>
<p> </p>
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=gb2312"></HEAD>
<BODY></BODY></HTML>
IE中查看源文件显示如下:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=gb2312"></HEAD>
<BODY></BODY></HTML>
请各位帮帮忙 谢谢