CODEWITHSUNDEEP
php
CompanyDroneFromSector7G
CompanyDroneFromSector7G

Reputation: 4517

Changing one value affects another

Please have a look at the following:

foreach($a_Header['Details'] as $i_Detail => &$a_Detail)
    {
    echo "{$a_Detail['VEH_TREAD_OFF']}\n";

    // Make a back-up of the value
    $BAK_TREAD_OFF = $a_Detail['VEH_TREAD_OFF'];

    // Copy some data from the saved header
    foreach(array
        (
        'POD_QTYORD',
        'VEH_TREAD_OFF',
        'RPM_SCRM_FIXEDPRICE',
        'RPM_TRM_FIXEDPRICE',
        'RPM_TRM_COSTPERMM',
        'RPM_CTS_CASINGCOST',
        'CHARGE_DESC',
        'Hide',
        ) as $s_Column)
        {
        $a_Header['Details'][$i_Detail][$s_Column] = $a_SavedHeader['Details'][$i_Detail][$s_Column];
        }

    echo "{$a_Detail['VEH_TREAD_OFF']}\n";

    // Now restore our value
    $a_Detail['VEH_TREAD_OFF'] = $BAK_TREAD_OFF;
    }

You can see that prior to entering the for loop, I have backed up a value which I restore after.

This is because for some reason it is being lost during the loop.

I'm not a PHP guru by any stretch, but this is confusing me no end, as I can't see why modifying one variable would affect another, unless there are wormholes in PHP!

Can someone tell me why this might be happening?

Thanks

Upvotes: 0

Views: 76

Answers (2)

ShaaD
ShaaD

Reputation: 626

$i_Detail => &$a_Detail

Now $a_Detail is a reference to $a_Header['Details'][$i_Detail]. both variables refer to a single value. Do not use & if you do not want that.

Upvotes: 1

code-kobold
code-kobold

Reputation: 824

Your code sample does not affect $a_detail at all. Are you sure, this is the only reference to this variable? Do you use something like extract()?

Upvotes: 0

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