请各位大虾,帮我看看,源代码如下:<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<style type="text/css">
<!--
.STYLE1 {font-size: 36px}
.STYLE2 {font-size: 24px}
-->
</style>
</head><body>
<p> </p>
<p class="STYLE1"> </p>
<?php if(!isset($_POST["btnSubmit"])) { ?>
<form id="form1" name="form1" method="post" action="">
<p class="STYLE1"> Web 开发技术与开发工具</p>
<hr />
<p><span class="STYLE1"> </span></p>
<p> </p>
<p><span class="STYLE1"> <span class="STYLE2">技术:</span>
<label>
<select name="1stWebTech" id="1stWebTech">
<option selected="selected">ASP</option>
<option>JSP</option>
<option>PHP</option>
<option>ASP.NET</option>
</select>
</label>
</span>
<span class="STYLE1"> <span class="STYLE2">工具:</span></span>
<select name="1stDevTool" size="4" multiple="multiple" id="1stDevTool">
<option value="Dreamweaver" selected="selected">Dreamweaver</option>
<option value="Visual Studio">VisualStudio</option>
<option value="Eclipse">Eclipse</option>
<option value="Delphi for php">Delphi for php</option>
</select>
</p>
<p> </p>
<hr />
<p> </p>
<span class="STYLE1">
<label> </label>
<label>
<input name="btnSubmit" type="submit" id="btnSubmit" value="提交" />
<input name="btnReset" type="reset" id="btnReset" value="重置" />
</label> </span>
<label></label>
</form>
<?php } else {
echo "<p>你选择的开发技术是:<br/>\n";
echo "{$_POST["1stWebTech"]}</p>\n";
$str="";
foreach ($_POST["1stDevTool"] as $value) $str.="☆{$value}<br>\n";
echo "<p>你选择的开发工具是:<br/>\n";
echo "{$str}</p>\n";
} ?>
<p><span class="STYLE1"> </span> </p>
</body>
</html>系统提示红色部分有错,
Warning:Invalid argument supplied for foreach() in <b>C:\wamp\www\page5-05.php急用,有谁在线吗
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<style type="text/css">
<!--
.STYLE1 {font-size: 36px}
.STYLE2 {font-size: 24px}
-->
</style>
</head><body>
<p> </p>
<p class="STYLE1"> </p>
<?php if(!isset($_POST["btnSubmit"])) { ?>
<form id="form1" name="form1" method="post" action="">
<p class="STYLE1"> Web 开发技术与开发工具</p>
<hr />
<p><span class="STYLE1"> </span></p>
<p> </p>
<p><span class="STYLE1"> <span class="STYLE2">技术:</span>
<label>
<select name="1stWebTech" id="1stWebTech">
<option selected="selected">ASP</option>
<option>JSP</option>
<option>PHP</option>
<option>ASP.NET</option>
</select>
</label>
</span>
<span class="STYLE1"> <span class="STYLE2">工具:</span></span>
<select name="1stDevTool" size="4" multiple="multiple" id="1stDevTool">
<option value="Dreamweaver" selected="selected">Dreamweaver</option>
<option value="Visual Studio">VisualStudio</option>
<option value="Eclipse">Eclipse</option>
<option value="Delphi for php">Delphi for php</option>
</select>
</p>
<p> </p>
<hr />
<p> </p>
<span class="STYLE1">
<label> </label>
<label>
<input name="btnSubmit" type="submit" id="btnSubmit" value="提交" />
<input name="btnReset" type="reset" id="btnReset" value="重置" />
</label> </span>
<label></label>
</form>
<?php } else {
echo "<p>你选择的开发技术是:<br/>\n";
echo "{$_POST["1stWebTech"]}</p>\n";
$str="";
foreach ($_POST["1stDevTool"] as $value) $str.="☆{$value}<br>\n";
echo "<p>你选择的开发工具是:<br/>\n";
echo "{$str}</p>\n";
} ?>
<p><span class="STYLE1"> </span> </p>
</body>
</html>系统提示红色部分有错,
Warning:Invalid argument supplied for foreach() in <b>C:\wamp\www\page5-05.php急用,有谁在线吗
变量的第一个字母不能是数字
Warning:Invalid argument supplied for foreach() in <b>C:\wamp\www\page5-05.php
if(is_array($_POST["1stDevTool"])){
foreach ($_POST["1stDevTool"] as $value) $str.="☆{$value} <br>\n";
}