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I tried to create a shopping basket in my project, but some problem to handle this.
My project basket must allow duplicate value, but my code auto duplicate last insert to array. Why does this happen, and how to solve this auto duplicate?
<?php
if(isset($_SESSION['basket'])){
$point = count($_SESSION['basket']);
echo " point = ".$point;
$value = end((array_keys($_SESSION['basket'])));
$value++;
}else{
$value = 0;
echo " point = 0";
}
if(isset($_GET['id'] , $_GET['meter'] , $_GET['color'])){
$id = $_GET['id'];
$color = $_GET['color'];
$meter = $_GET['meter'];
$selected_product = array($id , $color , $meter);
list($_SESSION['basket'][$value][0],$_SESSION['basket'][$value][1] , $_SESSION['basket'][$value][2]) = $selected_product;
echo "<pre>";
var_dump($_SESSION['basket']);
echo "</pre>";
}
?>
Though its not exactly clear from your question. To remove duplication in array use array_unique()
You also had a typo at
array($_SESSION['basket'][$value][0],$_SESSION['basket'][$value][1] , $_SESSION['basket'][$value][2]) = $selected_product;
Related
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I have a dynamic input form, I want to check if the record exists, if no then it can not insert data
my controller
$user = Master::where('id_a','=',$request->get('id_a'))->where('id_b','=',$request->get('id_b'))->get();
if($user->isEmpty()){
// insert
}else{
//message "cannot input"
}
if insert one data, success.. but if insert array in my controller not check..
why in input array data always insert???
This is pseudo for only check id_b
$data = [1,2,3,4];
$data_a = [1,2,3,4];
$masters = Master::whereIn('id_b', $data)->whereIn('id_a', $data_a)->get();
foreach($data as $key => $value) {
$isExisted = false;
foreach ($masters as $master) {
if ($master->id_b == $value[$key] && $master->id_a == $data_a[$key])
{
$isExisted = true;
break;
}
}
if ( ! $isExisted) {
$master = new Banner();
$master->value = your_data;
$master->save();
}
}
You could use exists()
if(Master::where('id_a','=',$request->get('id_a'))->where('id_b','=',$request->get('id_b'))->exists()) {
do something
}
Also I would suggest you reduce the amount of in-line stuff you're doing, instead something like this:
$id_a = $request->get('id_a');
$id_b = $request->get('id_b');
if(Master::where('id_a','=', $id_a)->where('id_b','=',$id_b)->exists()) {
do something
}
If I understand correctly, you want to insert a Master if a given id_a and id_b doesn't already exists for one Master
If so, you could actually use firstOrCreate :
Master::firstOrCreate(
['id_a' => $request->get('id_a'), 'id_b' => $request->get('id_b')],
['yourcolumntocreate' => columnvalue, ...]
)
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I want to search MySQL table and get in result in which don't have . (dot). example is below
example1.com
example2.com
example3
example4 com
So i want return, example 3 and 4. So basically i want row which don't have . (dot).
You can just use NOT LIKE:
SELECT column
FROM tablename
WHERE column NOT LIKE '%.%'
You can do that #fthiella suggested, or you can filter your search results in this was, using the stristr PHP function:
<?php
$searchQuery = 'example';
$sql = 'SELECT * FROM yourTable WHERE domain LIKE "%' . mysql_real_escape_string($searchQuery) . '%"';
$query = mysql_query($query);
$total = mysql_num_rows($query);
if($total) {
$data = array();
while($row = mysql_fetch_array($query)) {
if(stristr($row['domain'], '.') !== false) {
$data[] = $row['domain'];
}
}
die('<pre>' . print_r($data, true) . '</pre>');
} else {
die('Nothing was found.');
}
Note that I don't know your database table structure, so this is a psuedo-example.
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I have already seen examples for string manipulation using "explode" but none of them does my job..
I have an array of exploded strings:
$grand_result = 12,5,7,3,2,1 ;
$grandparent_id = explode(",",$grand_result);
i want to insert some values in db having id = $grand_result except first value returned (12) in this case
$grand_result can have many values i want to fetch only first 7 values..
how can i do that ...thanks in advance
you can use array_slice
$output = array_slice($grandparent_id, 0, 7);
$grand_result = "12,5,7,3,2,1" ;
$grandparent_id = explode(",",$grand_result);
first update
$avoid = grandparent_id[0];
foreach ($grandparent_id as $id) {
if ($avoid != $id) {
//run your update query
}
}
second fetch
$query = "select * from `table_name` where id in (".$grand_result.") limit 7";
Set Limit of explode
$grand_result = 12,5,7,3,2,1 ;
$grandparent_id = explode(",",$grand_result,8);
unset($grandparent_id[7]); or $grandparent_id = array_slice($grandparent_id, 0, 7);
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Im trying to find the best killer (most kills) out of a kills database.
Put the killerId of $important into an array, and compare it with the rest of the killers. Find the best killer with the weapon $important.
How do I do that?
$array = array();
$index = 0;
while($mData = $q->fetch_assoc())
{
$index++;
$arr = explode('with ', $mData['killText']);
$unimportant = array(" (in paintball)", " (in event)");
$important = str_replace($unimportant, "", $arr[1]);
if(empty($important)) { $important = "Suicide"; }
$array[$important]['Kills']++;
$array[$important]['Gun'] = $important;
$query2 = $mysql->query("SELECT * FROM `kills` WHERE `killText` LIKE '%$important%' AND `killerID` = '". $mData['killerID'] ."'") or die($mysql->error);
while($kData = $query2->fetch_assoc())
{
// put the killerId of $important into an array, and compare it with the rest of the killers. Find the best killer with the weapon $important
}
}
A GROUP BY will do the trick:
"SELECT killerID, COUNT(*) FROM kills WHERE killText LIKE '%$important%' GROUP BY killerID;"
You ca just fetch "killerID" and got the killer with most kills of weapon $important:
$kData = $query2->fetch_assoc();
$kData['killerID'];
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I'm trying to put a validation for when you get the same date, with the same time and same venue, it will not insert in the database. It will only insert in the database if 1 instance will return false.
$res_date = $_POST['res_date'];
$res_venue = $_POST['res_venue'];
$res_dur = $_POST['res_duration'];
$qryjay = mysql_query("SELECT * FROM tbl_reservation WHERE res_date='$res_date' AND res_dur = '$res_dur' AND res_venue = '$res_venue'");
if ((mysql_num_rows($qryjay) == $res_date) && ($qryjay == $res_dur) && ($qryjay) == $res_venue){
echo "<script language=javascript>alert('".$res_venue." is not available on ".$res_dur." on ".$res_date."!')</script>";
}
Try to fix your code like this:
<?
$res_date = mysql_real_escape_string($_POST['res_date']);
$res_venue = mysql_real_escape_string$_POST['res_venue']);
$res_dur = mysql_real_escape_string$_POST['res_duration']);
$qryjay = mysql_query("SELECT count(*) as countNbr FROM tbl_reservation WHERE res_date='".$res_date."' AND res_dur = '".$res_dur."' AND res_venue = '".$res_venue."'");
$result = mysql_fetch_assoc($qryjay);
if ($result['countNbr'] > 0)){
echo "<script language=javascript>alert('".$res_venue." is not available on ".$res_dur." on ".$res_date."!')</script>";
}
?>