如何检查是否用foreach循环设置了所有$ _POST变量

Question

I want to check if given $_post variable is set and after that execute a query(which is another theme).But i have a big trouble for 5 hours i cannot really pass it.. There is my function code

<?php
function post_category_isset()
{
    global $connect;

    $input = sanitize('category');
    $query = mysqli_query($connect, "SELECT term_id FROM term_taxonomy WHERE taxonomy = '$input'");

    while ($row = mysqli_fetch_assoc($query)) {

        $category_id [] = $row['term_id'];
        $result = '\'' . implode('\',\'', $category_id) . '\'';

        foreach ($row as $result) {

            $query1 = mysqli_query($connect, "SELECT name FROM terms WHERE term_id = $result");
            $fetch = mysqli_fetch_assoc($query1);
            $value = $fetch['name'];
            if (isset($_POST[$value])) {
                echo "if(isset($_POST[$value]) OR";

                return true;
            }
        }
    }
}


?>

I have tried everything,and yes the code looks really stupid the way it is right now,but i am depleted ...

So i made that function to check if categories variables are set,which are another function,because i want everything to be automatically .I will paste my other func in pastebin,since it is out of the thread here .

So all in short i want to make function which checks if all $_POST variables from previous functions are set and if they are,fire the query.

Thank you!

Answer 1

You don't have to use two separate queries here, you can do everything in just one single query.

SELECT name 
FROM terms 
WHERE term_id IN (
    SELECT term_id 
    FROM term_taxonomy 
    WHERE taxonomy = '$input'
)

So your post_category_isset() function would be like this:

function post_category_isset(){
    global $connect;

    $input = sanitize('category');
    $query = mysqli_query($connect, "SELECT name FROM terms WHERE term_id IN (SELECT term_id FROM term_taxonomy WHERE taxonomy = '$input')");
    while ($row = mysqli_fetch_assoc($query)) {
        $value = $row['name'];
        if (isset($_POST[$value])) {
            // your code
        }
}