Question

我的PHP代码可以很好地验证电子邮件，但对于用户名，它会一直返回false。我只是想知道如何解决它？

PHP：

 <?php
include_once("db_connect.php");
// USERNAME
if(!empty($_POST['username'])) {
    $username = $mysqli->real_escape_string($_POST['username']);
    $query = "SELECT * FROM users WHERE username = '$username'";
    $results = $mysqli->query($query);
    if($results->num_rows == 0)
    {
        echo "true";  //good to register
    }
    else
    {
        echo "false"; //already registered
    }
} else {
    echo "false";
}
?>

Html表格

    <div id="registerForm">
<h1>Register</h1>
<form action="" method="POST" class="registerForm form-horizontal">
<div class="form-group">
<label class="control-label col-sm-2" for="username" id="username">Username:</label>
<div class="col-sm-10">
<input type="text" name="username" class="form-control" placeholder="Enter a username">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2" for="email">Email:</label>
<div class="col-sm-10">
<input id="email" type="email" name="email" class="form-control" placeholder="Enter your email - IMPORTANT">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2" for="password">Password:</label>
<div class="col-sm-10">
<input id="password" type="password" name="password" class="form-control" placeholder="Enter a password">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2" for="confirmpassword">Confirm Password:</label>
<div class="col-sm-10">
<input id="confirmpassword" type="password" name="confirmpassword" class="form-control" placeholder="Confirm password">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2" for="code">Code:</label>
<div class="col-sm-10">
<input type="text" id="code" name="code" class="form-control" placeholder="Enter Register Code">
</div>
</div>
<button type="submit" class="btn btn-primary">Register</button>
</form>
</div>

和jquery：

$(document).ready(function () {
$('.registerForm').validate({
    onkeyup: false,
    rules: {
        username: {
            required: true,
            rangelength: [5, 20],
            remote: {
                url: 'core/check2.php',
                type: "post",
                data: 
                {
                        username: function() {
                        return $( "#username" ).val();
                    }
                }
            }
        },
        password: {
            required: true,
            rangelength: [5, 20],
        },
        confirmpassword: {
            required: true,
            rangelength: [5, 20],
            equalTo: password
        },
        email: {
            required: true,
            remote: {
                url: 'core/check.php',
                type: "post",
                    data: {
                        email: function() {
                        return $( "#email" ).val();
                    }
                }
            }
        },
        code: {
            required: true,
            remote: {
                url: 'core/checkcode.php',
                type: "post",
                    data: {
                        code: function() {
                        return $( "#code" ).val();
                    }
                }
            }
        }
    },
    messages: {
        username: {
            required: "Enter a username.",
            rangelength: "Username must be 5 to 20 character",
            remote: "Username have been taken"
        },
        password: {
            required: "Enter a password.",
            rangelength: "Password must be 5 to 20 character",
            remote: "Email have been taken"
        },
        confirmpassword: {
            required: "Confirm your password.",
            rangelength: "Password must be 5 to 20 character",
            equalTo: "Your password does not match"
        },
        email: {
            required: "Enter your email(NOT SPAM EMAIL).",
            remote: "This Email have been taken"
        },
        code: {
            required: "Enter your Register Code",
            remote: "Invalid Code"
        }
    }

});
});

Answer 1

<input id="username" type="text" name="username" class="form-control" placeholder="Enter a username">

你错过了id标识符，这都是

Answer 2

您id="username"和label重复了input。那你的问题。

PHP用户名验证始终返回false

2 个答案: