php 表单验证实现代码
<html> <head> <title>Form</title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <script language="javascript" src="form.js" src="form.js"></script> </head> <body> <form action="post.php" method="get" name="form1" onsubmit="return form_sub()"> <table width="271" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td width="85"><p align="right">姓名:</p></td> <td width="186"><input name="username" type="text" id="username"></td> </tr> <tr> <td><p align="right">密码:</p></td> <td><input name="password" type="password" id="password"></td> </tr> <tr> <td><p align="right">密码确认:</p></td> <td><input name="password2" type="password" id="password2"></td> </tr> <tr> <td><p align="right">性别:</p></td> <td><select name="sex" id="sex"> <option value="0" selected>男</option> <option value="1">女</option> </select></td> </tr> <tr> <td><p align="right">生日:</p></td> <td><input name="birthday" type="text" id="birthday"></td> </tr> <tr> <td><p align="right">E-mail:</p></td> <td><input name="email" type="text" id="email"></td> </tr> <tr> <td><p align="right">职业:</p></td> <td><input name="job" type="text" id="job"></td> </tr> </table> <p align="center"> <input type="submit" value="Submit"> <input type="reset" value="Reset"> </p> </form> </body> </html>
function form_sub() { if(!test_username(document.form1.username.value)) { alert("姓名格式不正确"); return false; } if(!test_date(document.form1.birthday.value)) { alert("日期格式不正确"); return false; } if(!test_email(document.form1.email.value)) { alert("E-mail地址格式不正确"); return false; } if(!test_password(document.form1.password.value, document.form1.password2.value)) { alert("两次密码输入不相同"); return false; } } function test_username(str_username) { var pattern = /[a-zA-Z_]/; if(pattern.test(str_username)) return true; else return false; } function test_date(str_birthday) { var pattern = /[0-9]{4}-[0-9]{2}-[0-9]{2}/; if(pattern.test(str_birthday)) return true; else return false; } function test_email(str_email) { var pattern = /^[a-zA-Z0-9_.]+@([a-zA-Z0-9_]+.)+[a-zA-Z]{2,3}$/; if(pattern.test(str_email)) return true; else return false; } function test_password(str_p1, str_p2) { if(str_p1==str_p2) return true; else return false; }
<?php //本程序用于接收来自HTML页面的表单数据并进行相应的验证 $founderr = false; //初始化founderr变量,表示没有错误 if(!ereg("[a-zA-Z_]", $_GET['username'])) { echo "姓名格式不正确<BR>"; $founderr = true; } if(!ereg("[0-9]{4}-[0-9]{2}-[0-9]{2}", $_GET['birthday'])) { echo "日期格式不正确<BR>"; $founderr = true; } if(!ereg("^[a-zA-Z0-9_.]+@([a-zA-Z0-9_]+.)+[a-zA-Z]{2,3}$", $_GET['email'])) { echo "E-mail地址格式不正确<BR>"; $founderr = true; } if($_GET['password'] != $_GET['password2']) { echo "两次密码输入不相同"; $founderr = true; } if(!$founderr) { ?> <html> <head> <title>Form</title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> </head> <body> <table width="271" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td width="85"><p align="right">姓名:</p></td> <td width="186"><?php echo $_GET['username'] ?></td> </tr> <tr> <td><p align="right">密码:</p></td> <td><?php echo $_GET['password'] ?></td> </tr> <tr> <td><p align="right">性别:</p></td> <td><?php if($_GET['sex']==0) echo "男"; else echo "女" ?></td> </tr> <tr> <td><p align="right">生日:</p></td> <td><?php echo $_GET['birthday'] ?></td> </tr> <tr> <td><p align="right">E-mail:</p></td> <td><?php echo $_GET['email'] ?></td> </tr> <tr> <td><p align="right">职业:</p></td> <td><?php echo $_GET['job'] ?></td> </tr> </table> </body> </html> <?php } ?>
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