How to Change Multiple Checkbox Query to Multiple Chosen jQuery? - php

Question

I have a multiple checkbox query, as below
<span style="width:276px;display:inline-block;"> <input type="checkbox" name="check_list[]" value="sub_category_id = '1''">Name1</span>
<span style="width:276px;display:inline-block;"> <input type="checkbox" name="check_list[]" value="sub_category_id = '2'">Name2</span>
<span style="width:276px;display:inline-block;"> <input type="checkbox" name="check_list[]" value="sub_category_id = '3'">Name3</span>
<span style="width:276px;display:inline-block;"> <input type="checkbox" name="check_list[]" value="sub_category_id = '4'">Name4</span>
then
<?php
$names = implode(' or ', (array)$_POST['check_list'.$i]);
echo $names;
?>
I got part of my query.
sub_category_id = '1'' or sub_category_id = '2' or sub_category_id = '3' or sub_category_id = '4'
Using chosen Jquery, I´m able to retrieve the MySQL data (Name1, Name2, Name3, Name4), as below:
<select name="sub_category_id[]" id="sub_category_id[]" multiple class="chosen-select" tabindex="8">
<option value="">Selecione...</option>
<?php foreach ($arrEstados as $value => $name) {
echo "<option value='{$value}'>{$name}</option>";
}?>
</select>
$names = $_POST['sub_category_id'];
$query=implode('sub_category_id=', $names);
echo $query;
But the 'or' is missing. I don´t have great skills in PHP, so I ask: Is this the right way to get my query? I´m not using PDO or mysqli.

Answer 1

change your html select element to follow this:
<select name="check_list[sub_category_id][]" id="sub_category_id[]" multiple class="chosen-select" tabindex="8">
<option value="">Selecione...</option>
<?php
foreach ($arrEstados as $value => $name) {
echo "<option value='{$value}'>{$name}</option>";
}
?>
</select>
doing this will create an array like this in your $_POST:
$_POST => Array
(
[check_list] => Array
(
[sub_category_id] => Array
(
[0] => 2
[1] => 3
)
)
)
then change your PHP like so:
<?php
$names = isset($_POST['check_list']) && isset($_POST['check_list']['sub_category_id']) ? $_POST['check_list']['sub_category_id'] : NULL;
$query = "SELECT * FROM tablename WHERE ";
if(!is_null($names)){
foreach($names as $i => $name){
if($i !== 0){
$query .= " OR ";
}
$query .= "sub_category_id = '$name'";
}
}
echo($query);
//Output: SELECT * FROM tablename WHERE sub_category_id = '2' OR sub_category_id = '3'
}
?>
you might need to change the query to fit your application, but this will help get in you in the right direction.

Answer 2

As Martin suggest de http://www.tutorialspoint.com/mysql/mysql-in-clause.htm turns the simple way to solve it. That´s what i did:
<select chosen still the same...>
$sub_category_1 = $_POST['sub_category_id'];
$query=implode(',', $sub_category_1);
$sql = "Select * from table WHERE sub_category_id IN($query)";