为什么修改信息后数据库表中内容为空
套用上一套修改课题的代码写了一个修改信息的代码,但是将内容修改提交后,再查询表中内容发现除了xuehao其他内容为空?
<?php<br /> //######################学生信息修改1##########################<br /> include "config.php";<br /> include "header.php";<br /> ?> <br /> <title>修改学生信息</title><br /> <?php<br /> extract($_REQUEST); <br /> $query="update $student_table set name='$name1' where xuehao='$xuehao'";<br /> mysql_query("set names 'GB2312'");<br /> $result=mysql_query($query);<br /> $query="update $student_table set sex='$sex1' where xuehao='$xuehao'";<br /> mysql_query("set names 'GB2312'");<br /> $result=mysql_query($query);<br /> $query=mysql_query("update $student_table set class='$class1' where xuehao='$xuehao'");<br /> mysql_query("set names 'GB2312'");<br /> $result=mysql_query($query);<br /> $query=mysql_query("update $student_table set password='$password2' where xuehao='$xuehao'");<br /> mysql_query("set names 'GB2312'");<br /> $result=mysql_query($query);<br /> $query=mysql_query("update $student_table set password1='$password3' where xuehao='$xuehao'");<br /> mysql_query("set names 'GB2312'");<br /> $result=mysql_query($query); <br /> $query="update $student_table set love='$love1' where xuehao='$xuehao'";<br /> mysql_query("set names 'GB2312'");<br /> $result=mysql_query($query);<br /> $query="update $student_table set telephone='$telephone1' where xuehao='$xuehao'";<br /> mysql_query("set names 'GB2312'");<br /> $result=mysql_query($query);<br /> $query="update $student_table set reward='$reward1' where xuehao='$xuehao'";<br /> mysql_query("set names 'GB2312'");<br /> $result=mysql_query($query);<br /> <br /> if($password2!=$password3)<br /> {<br /> echo"<p align=\"center\"><font color=\"#FF0000\"><b><big>输入的密码不一致,请重新输入。</big></b></font></p>";<br /> echo "<meta http-equiv=\"refresh\" content=\"2;url=alter_student1.php\">";<br /> exit;<br /> }<br /> <br /> if($result==true)<br /> {<br /> echo"<p align=\"center\"><font color=\"#FF0000\"><b><big>修改信息成功!</big></b></font>";<br /> echo "<meta http-equiv=\"refresh\" content=\"1;url=index.php\">";<br /> exit;<br /> }<br /> else<br /> {<br /> echo"<p align=\"center\"><font color=\"#FF0000\"><b><big>修改出错,请返回重新修改。</big></b></font></p>";<br /> echo "<meta http-equiv=\"refresh\" content=\"1;url=alter_student.php\">"; <br /> exit;<br /> }<br /> <br /> <br /> ?><br /> <?php include "foot.php";?>