如所理解的,你需要检查渡过latitute或longitute是database Table
只有当发现错误插入。
我正在使用面向mysqli准备语句的PHP对象。
此代码仅当同时出现和结束时才返回false。 如果您希望输出返回false,只要在SELECT
查询中添加OR
运算符即可。
这里是与数据的表图像
这里是HTML代码:的index.php
<?php
include('co_ordinate.php');
$newcoordinate = new co_ordinate();
?>
<!DOCTYPE html>
<html>
<head>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<!-- jQuery library -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<!-- Latest compiled JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
<div class="col-md-6 col-md-offset-3" style="margin-top:100px;">
<form action="" method="post">
<div class="form-group">
<i>Add Latitute</i>
<input type="text" name="latitute" class="form-control">
</div>
<div class="form-group">
<i>Add Longitute</i>
<input type="text" name="longitute" class="form-control">
</div>
<div class="form-group">
<input type="submit" name="addcoordinate" class="btn btn-primary">
</div>
</form>
<?php
if(isset($_POST['addcoordinate'])){
$latitude = $_POST['latitute'];
$longitute = $_POST['longitute'];
$newcoordinate->getCo_ordinates($latitude,$longitute);
}
?>
</div>
</body>
</html>
下面是类文件:co_ordinate.php
<?php
class co_ordinate{
private $link;
function __construct(){
$this->link = new mysqli ('localhost','root','','example');
if(mysqli_connect_errno()){
die("connection Failed".mysqli_connect_errno());
}
}
function getCo_ordinates($latitude,$longitute){
$sql = $this->link->stmt_init();
if($sql->prepare("SELECT latitude,longitude FROM tracklatlong WHERE latitude=? AND longitude= ?")){
$sql->bind_param('dd',$latitude,$longitute);
$sql->execute();
$sql->store_result();
if($sql->num_rows > 0){
echo "The Co-Ordinates Already Exists";
}
else
{
$query = $this->link->stmt_init();
if($query->prepare("INSERT INTO tracklatlong (latitude,longitude) VALUES (?,?)")){
$query->bind_param('dd',$latitude,$longitute);
$query->execute();
echo "The Co-Ordinates Inserted Successfully";
}
}
}
else
{
echo $this->link->error;
}
}
}
?>
所以你想检查第一拉特长在分贝,然后想要添加 –
''currentlat = $ _row [“latitude”];'=>'$ currentlat = $ row [“latitude”];' – JustBaron
在复合体'(纬度,经度)'上添加'UNIQUE'约束。 – eggyal