updated two fields with a form

I'm trying to update two tables mysql to a form.  The page includes the following:

"A stock" quantity (from table A)

A text form field (where I entered the used inventory)

A drop-down list of article for "the inventory B' (from table B)

I want to be able to enter a quantity in the text field and subtracts it A inventory and added to the inventory B.

For example:

Apples. (Table A)

Quantity: 10

Applesauce. (Table B)

Total used: 3

Used: 2 (from text form field)

.. .to present, 2 will be subtracted from apples on site and added to... applesauce 8 apples and Apple Sauce 5

A little more than you probably think Compliated. Here is an example of using mysqli that is much easier to work with and understand that code spewed out by Dreamweaver - more mysql code, it produces should not now be used because it is not supported in newer versions of php.

connect to the database using mysqli

<>

get the id of the link and assign it to a variable - $apple_id

$apple_id = $_GET ['id'];

Get information about the dessert apples to apples

$apple_information = $conn-> query ("SELECT * FROM apples WHERE id ="$apple_id"" ") or die ($conn-> error);

$apple_information = $apple_information-> fetch_assoc();

Get the recipe from the recipes table names

$recipes = $conn-> query ("SELECT * from recipes") or die ($conn-> error);

number of rows returned no

$numRows = $recipes-> num_rows;

Click on the submit form button, process the form information

If (isset($_POST['USE'])) {}

Get the amount of apples of form field

$apples_used = $_POST ['apples_used'];

If the QTY field blank form to print an error

If (empty ($apples_used)) {}

$error ["apples_used"] ="

Please provide amount of apples required

";

}

get the recipe of the revenue table selection

$recipe_choices = $_POST ['Recipe_Choices'];

If no recipe printing and error

If ($recipe_choices == 'Select recipe') {}

$error ["recipe_choices"] ="

Please select a recipe

";

}

are no errors of process information

{if (! isset ($Error))}

get the number of apples in the field quantity of stock and update

$apples_in_stock = $conn-> query ("' quantity SELECT FROM apples WHERE id = ' $apple_id '" ") or die ($conn-> error);

$apples_in_stock = $apples_in_stock-> fetch_assoc();

$new_apple_total = $apples_in_stock ['quantity'] - $apples_used;

$conn-> query ("UPDATE Apple SET quantity = ' $new_apple_total ' WHERE id = ' $apple_id '");

get recipe update and quantity field name

$apples_recipes = $conn-> query ("" SELECT id, amount OF revenue WHERE Name = ' $recipe_choices ' "") or die ($conn-> error);

$apples_recipes = $apples_recipes-> fetch_assoc();

$recipe_id = $apples_recipes ['id'];

$new_recipes_total = $apples_recipes ['quantity'] + $apples_used;

$conn-> query ("UPDATE revenue SET quantity = ' $new_recipes_total ' WHERE id = ' $recipe_id '");

Get information from update on apples

$apple_information = $conn-> query ("SELECT * FROM apples WHERE id ="$apple_id"" ") or die ($conn-> error);

$apple_information = $apple_information-> fetch_assoc();

}

}

?>

Untitled document

USE OF APPLES

echo $error ["apples_used"];

}

{if (isset ($Error ['recipe_choices']))}

echo $error ["recipe_choices"];

}

?>

Apples:


Recipe:

Tags: Dreamweaver

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    182925 600003 4 1 PERSON
    1 600004 4 1 PERSON
    2 600004 4 1 PERSON
    3 600004 4 1 PERSON
    17 600004 4 1 PERSON
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      3  /
    
      SYSAUSPR GEBIET  SYSGEBIET        TYP       RANG
    ---------- ------ ---------- ---------- ----------
             1 PERSON     600004          4          1
             2 PERSON     600004          4          1
             3 PERSON     600004          4          1
            17 PERSON     600004          4          1
            18 PERSON     600022          4          1
        182864 PERSON     600079          4          1
        184082 PERSON     600092          4          1
        182774 PERSON     600143          4          1
        183237 PERSON     600165          4          1
             7 PERSON     600169          4          1
             8 PERSON     600169          4          1
    
      SYSAUSPR GEBIET  SYSGEBIET        TYP       RANG
    ---------- ------ ---------- ---------- ----------
             9 PERSON     600169          4          1
            12 PERSON     600169          4          1
            14 PERSON     600169          4          1
        184309 PERSON     600179          4          1
            23 PERSON     600182          4          1
    
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             1 PERSON     600004          4          1
             2 PERSON     600004          4          2
             3 PERSON     600004          4          3
            17 PERSON     600004          4          4
            18 PERSON     600022          4          1
        182864 PERSON     600079          4          1
        184082 PERSON     600092          4          1
        182774 PERSON     600143          4          1
        183237 PERSON     600165          4          1
             7 PERSON     600169          4          1
             8 PERSON     600169          4          2
    
      SYSAUSPR GEBIET  SYSGEBIET        TYP       RANG
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             9 PERSON     600169          4          3
            12 PERSON     600169          4          4
            14 PERSON     600169          4          5
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            23 PERSON     600182          4          1
    
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    SQL> 
    

    SY.

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