Php 如何显示所有验证错误,而不是一次显示一个验证错误?
我在下面有一段代码,其中它执行了两个查询,如果在前两个查询中的一个查询中找到了一行,那么它将显示验证错误,如果在这两个查询中没有找到行,那么它将执行一个insert和另一个SELECT查询:Php 如何显示所有验证错误,而不是一次显示一个验证错误?,php,mysqli,Php,Mysqli,我在下面有一段代码,其中它执行了两个查询,如果在前两个查询中的一个查询中找到了一行,那么它将显示验证错误,如果在这两个查询中没有找到行,那么它将执行一个insert和另一个SELECT查询: // don't use $mysqli->prepare here $query = "SELECT StudentUsername FROM Student WHERE StudentUsername =
// don't use $mysqli->prepare here
$query = "SELECT StudentUsername FROM Student WHERE StudentUsername = ?";
// prepare query
$stmt=$mysqli->prepare($query);
// You only need to call bind_param once
$stmt->bind_param("s",$getusername);
// execute query
$stmt->execute();
// get result and assign variables (prefix with db)
$stmt->bind_result($dbStudentUsername);
//get number of rows
$stmt->store_result();
$numrows = $stmt->num_rows();
$aliasquery = "SELECT StudentAlias FROM Student WHERE StudentAlias = ?";
// prepare query
$aliasstmt=$mysqli->prepare($aliasquery);
// You only need to call bind_param once
$aliasstmt->bind_param("s",$getalias);
// execute query
$aliasstmt->execute();
// get result and assign variables (prefix with db)
$aliasstmt->bind_result($dbStudentAlias);
//get number of rows
$aliasstmt->store_result();
$aliasnumrows = $aliasstmt->num_rows();
if ($aliasnumrows == 0){
if ($numrows == 0){
$formatdate = date("Y-m-d",strtotime($getdob));
$studentpassword = md5(md5("93w".$studentpassword."ed0"));
$insertsql = "
INSERT INTO Student
(StudentForename, StudentSurname, StudentAlias, StudentUsername, StudentPassword, StudentDOB, Year, CourseId)
VALUES
(?, ?, ?, ?, ?, ?, ?, ?)
";
if (!$insert = $mysqli->prepare($insertsql)) {
// Handle errors with prepare operation here
}
$insert->bind_param("ssssssis", $getfirstname, $getsurname, $getalias, $getusername, $studentpassword, $formatdate, $getyear, $getcourse);
$insert->execute();
if ($insert->errno) {
// Handle query error here
}
$insert->close();
// don't use $mysqli->prepare here
$query = "SELECT StudentUsername FROM Student WHERE StudentUsername = ?";
// prepare query
$stmt=$mysqli->prepare($query);
// You only need to call bind_param once
$stmt->bind_param("s",$getusername);
// execute query
$stmt->execute();
// get result and assign variables (prefix with db)
$stmt->bind_result($dbStudentUsername);
//get number of rows
$stmt->store_result();
$numrowsstmt = $stmt->num_rows();
}else{
$errors['username'] = "<span style='color: red'>There is already a Student with that Username</span>";
}
}else{
$errors['alias'] = "<span style='color: red'>There is already a Student with that Alias</span>";
}
}
//不要使用$mysqli->在这里准备
$query=“从StudentUsername=?”的学生中选择StudentUsername”;
//准备查询
$stmt=$mysqli->prepare($query);
//您只需要调用bind_param一次
$stmt->bind_参数($s',$getusername);
//执行查询
$stmt->execute();
//获取结果并分配变量(前缀为db)
$stmt->bind_结果($dbStudentUsername);
//获取行数
$stmt->store_result();
$numrows=$stmt->num_rows();
$aliasquery=“从StudentAlias=?”中选择StudentAlias;
//准备查询
$aliasstmt=$mysqli->prepare($aliasquery);
//您只需要调用bind_param一次
$aliasstmt->bind_参数($s',$getalias);
//执行查询
$aliasstmt->execute();
//获取结果并分配变量(前缀为db)
$aliasstmt->bind_result($dbStudentAlias);
//获取行数
$aliasstmt->store_result();
$aliasnumrows=$aliasstmt->num_rows();
如果($aliasnumrows==0){
如果($numrows==0){
$formatdate=日期(“Y-m-d”,标准时间($getdob));
$studentpassword=md5(md5(“93w”。$studentpassword.ed0”);
$insertsql=”
插入学生
(StudentForName、StudentName、StudentAlias、StudentUsername、StudentPassword、StudentDOB、Year、CourseId)
价值观
(?, ?, ?, ?, ?, ?, ?, ?)
";
if(!$insert=$mysqli->prepare($insertsql)){
//在此处使用prepare操作处理错误
}
$insert->bind_参数(“SSSS是”、$getfirstname、$GetNames、$getalias、$getusername、$studentpassword、$formatdate、$getyear、$getcourse);
$insert->execute();
如果($insert->errno){
//在此处处理查询错误
}
$insert->close();
//不要使用$mysqli->在此处准备
$query=“从StudentUsername=?”的学生中选择StudentUsername”;
//准备查询
$stmt=$mysqli->prepare($query);
//您只需要调用bind_param一次
$stmt->bind_参数($s',$getusername);
//执行查询
$stmt->execute();
//获取结果并分配变量(前缀为db)
$stmt->bind_结果($dbStudentUsername);
//获取行数
$stmt->store_result();
$numrowstmt=$stmt->num_行();
}否则{
$errors['username']=“已有一名学生使用该用户名”;
}
}否则{
$errors['alias']=“已有一名学生使用该别名”;
}
}
但我遇到的问题是,如果两个验证错误都满足,我希望同时显示这两个验证错误。目前,它一次只显示一个验证错误。如果两个验证错误都满足,如何将两个验证错误显示在一起
下面是将验证错误存储在表单中的代码:
$error_alias= (!empty($errors['alias']))?$errors['alias']:"";
$error_username = (!empty($errors['username']))?$errors['username']:"";
$form = "
<form action='" . htmlentities($_SERVER["PHP_SELF"]) . "' method='post'>
<table>
<tr>
<td>Alias:</td>
<td><input type='text' name='alias' value='$getalias' /><br/>".$error_alias."</td>
</tr>
<tr>
<td>Username:</td>
<td><input type='text' name='studentusername' value='$getusername' /><br/>".$error_username."</td>
</tr>
<tr>
<td></td>
<td><input type='submit' value='Register' name='registerbtn' /></td>
</tr>
</table>
</form>";
echo $form;
$error\u alias=(!empty($errors['alias'])?$errors['alias']:“”;
$error_username=(!empty($errors['username'])?$errors['username']:“”;
$form=”
别名:
“$error\u别名。”
用户名:
“$error\u用户名。”
";
回声$形式;
您可以稍微更改if语句:
if ($aliasnumrows == 0 && $numrows == 0){
//Do stuff
}else{
if($aliasnumrows){
$errors['alias'] = "<span style='color: red'>There is already a Student with that Alias</span>";
}
if($numrows){
$errors['username'] = "<span style='color: red'>There is already a Student with that Username</span>";
}
}
if($aliasnumrows==0&&$numrows==0){
//做事
}否则{
如果($aliasnumrows){
$errors['alias']=“已有一名学生使用该别名”;
}
如果($numrows){
$errors['username']=“已有一名学生使用该用户名”;
}
}