新手,轻拍.各位大哥大姐们帮我看一下这段php代码问题出在哪

Successfully connected to MySQL.
';	//mysql_close(); // close the connection}else {	die('
Could not connect to MySQL because: ' .mysql_error() .	'
');}if (@mysql_select_db("PREMIERE", $connection)){	print '
The PREMIERE database has been selected.
';}else {	die('
Cound not select the PREMIERE database because: ' .mysql_error().'
');}if(!$_REQUEST['submit']){	generate_form();}else if($_REQUEST['submit'] == "Search"){	search_rep();}else if($_REQUEST['submit'] == "Add"){	add_rep();}else if($_REQUEST['submit'] == "Delete"){	delete_rep();}else if($_REQUEST['submit'] == "Update"){	update_rep();}function generate_form(){}function search_rep(){// Define the rep Number php variable name$rep = $_POST['rep_num'];print "The rep num chosen was $rep
";// Define the query$query = "SELECT * FROM REP WHERE CUSTOMER_NUM = '$rep'";// Output the resulting query tableif ($r = mysql_query($query)){	while ($row = mysql_fetch_array($r))	{		print "
{$row['REP_NUM']}
{$row['LAST_NAME']}
{$row['FIRST_NAME']}
		{$row['STREET']}
{$row['CITY']}
{$row['STATE']}
{$row['ZIP']}
		{$row['COMMISSION']}
{$row['RATE']}
\n";	}}}function add_rep(){}function delete_rep(){}function update_rep(){}?>

回复讨论(解决方案)

error_reporting(E_ALL & ~E_NOTICE);
改作
error_reporting(E_ALL);
可能就知道了

把 $row 的关联键改成小写看看

error_reporting(E_ALL & ~E_NOTICE);
改作
error_reporting(E_ALL);
可能就知道了

把 $row 的关联键改成小写看看

我试了, 错误提示为:
Undefined index: submit ... on line 28
Undefined index: submit ... on line 33

28行是 if(!$_REQUEST['submit']) 接受的是表单提交的数据
但你的表单中并没有名为 submit 的控件

楼上正解，给type为submit的input加name=submit

28行是 if(!$_REQUEST['submit']) 接受的是表单提交的数据
但你的表单中并没有名为 submit 的控件

那应该怎么改呢？
html文件：