php 用户注册实例代码,适合初学者
<?php if ($_POST[submit]) { checkusername($_POST[username]); if ($_SESSION["code"] == $_POST[code]) { $username = str_replace(" ", "", $_POST[username]); $password = md5($_POST[password] . ALL_PS); $sql = "INSERT INTO `member`.`user_list` (`uid`, `m_id`, `username`, `password`) VALUES (NULL, '$_POST[select]', '$username','$password' )"; mysql_query($sql); echo "注册成功"; } else { echo "验证码错误" . "<br>"; session_destroy(); } } function checkusername($username) { $sql2 = "select uid from user_list where username='" . mysql_escape_string($username) . "'"; $result = mysql_query($sql2) or die('ERROR: ' . mysql_error()); if (mysql_num_rows($result) > 0) { echo "该用户名已经存在,请更换!"; exit(); } else { echo "<script> location.href='reg.php'</script>"; } } ?> <LINK href="common.css" type=text/css rel=stylesheet> <form action="" method="post"> 用户名:<input type="text" name="username" style="height:23px" /><br> 密 码:<input type="password" name="password" style="height:23px" /><br> 职 位: <select name="select" size="1" style="height:23px" / > <option value="1">1</option> <option value="2">2</option> </select> <br/> 验证码:<input type="code" name="code" size="10" style="height:23px" /> <img src="imgcode.php"> <br><br> <input type="submit" name="submit" value="注册"/> </form>
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