<?php
date_default_timezone_set('Asia/Manila');
$conn=mysql_connect("localhost","root","");
mysql_select_db("dbposo",$conn);
if(isset($_POST['add']))
{
if( empty($_POST['fname']) || empty($_POST['mname']) || empty($_POST['lname']))
{
echo "<script>alert('Please fill up all the fields!')</script>";
header("Refresh: 0;url=admin_publicviolation.php");
}
else
{
$number=$_POST['number'];
$fname=$_POST['fname'];
$mname=$_POST['mname'];
$lname=$_POST['lname'];
$age=$_POST['age'];
$gender=$_POST['gender'];
$violation=$_POST['violation'];
$officer=$_POST['officer'];
$offenses=$_POST['offenses'];
$date=date("y-m-d");
$time=date("H:i:s");
$price=$_POST['price'];
mysql_query("insert into tblcitizen(number,fname,mname,lname,age,gender,violation,officer,offenses,date,time, price) values('$number','$fname','$mname', '$lname', '$age', '$gender', '$violation' , '$officer', '$offenses','$date','$time','100')",$conn) or die(mysql_error());
echo "<script>alert('Successfully Recorded, First penalty: 100php!')</script>";
header("Refresh: 0;url=admin_publicviolation.php");
}
}
?>
如果$ number已存在于数据库中,我想拒绝注册,有人帮助我吗?无法弄清楚。我不能使用一些编码方法。不知道如何使用其他
答案 0 :(得分:1)
ALTER TABLE tblcitizen ADD CONSTRAINT tblcitizen UNIQUE (number);
现在,如果该数字已经存在,插入将失败,您需要检查mysql_error以了解如何继续。如果您使用的是不推荐使用的mysqli或PDO接口,则要检查的方法是mysqli_error或PDO::errinfo,它们的工作方式相同。
答案 1 :(得分:0)
首先使用选择查询,即AND请使用mysqli而不是mysql
$query = mysql_query("SELECT * FROM tblcitizen WHERE number = '".$number."'");
$fetch_rows = mysql_num_rows($query);
if ( $fetch_rows > 0 )
{
// then do something
} else {
mysql_query("insert into tblcitizen(number,fname,mname,lname,age,gender,violation,officer,offenses,date,time, price) values('$number','$fname','$mname', '$lname', '$age', '$gender', '$violation' , '$officer', '$offenses','$date','$time','100')",$conn) or die(mysql_error());
echo "<script>alert('Successfully Recorded, First penalty: 100php!')</script>";
header("Refresh: 0;url=admin_publicviolation.php");
}
答案 2 :(得分:0)
<?php
date_default_timezone_set('Asia/Manila');
$conn=mysql_connect("localhost","root","");
mysql_select_db("dbposo",$conn);
if(isset($_POST['add']))
{
if( empty($_POST['fname']) || empty($_POST['mname']) || empty($_POST['lname']))
{
echo "<script>alert('Please fill up all the fields!')</script>";
header("Refresh: 0;url=admin_publicviolation.php");
}
// Check if already exists
$number = $_REQUEST['number'];
$result = mysql_query("SELECT * FROM tblcitizen WHERE number = '$number' ");
if (mysql_num_rows($result)==0) {
// Go ahead and insert everything in table
$number=$_POST['number'];
$fname=$_POST['fname'];
$mname=$_POST['mname'];
$lname=$_POST['lname'];
$age=$_POST['age'];
$gender=$_POST['gender'];
$violation=$_POST['violation'];
$officer=$_POST['officer'];
$offenses=$_POST['offenses'];
$date=date("y-m-d");
$time=date("H:i:s");
$price=$_POST['price'];
mysql_query("insert into tblcitizen(number,fname,mname,lname,age,gender,violation,officer,offenses,date,time, price) values('$number','$fname','$mname', '$lname', '$age', '$gender', '$violation' , '$officer', '$offenses','$date','$time','100')",$conn) or die(mysql_error());
echo "<script>alert('Successfully Recorded, First penalty: 100php!')</script>";
header("Refresh: 0;url=admin_publicviolation.php");
echo 'Your data was sent';
}
else
{
echo "Number already exists ";
}
}
?>