Foreach Logic

[Szabi Zsoldos]

Hey guys,

I'm having difficulties with a problem.
I iterate over an array of data with X rows

And i have the positions of each row incremented, i would like that when i found an exception i shift all the position id's so after each exception the next ID has to be +2 as seen in the second attachment.

After each exception i woul like to have a free unused position so i can use it later.
Any idea of how could i make this ?

Picture one is the data array

Picture two is the desired result

[JorgeM]

If you post what you have done so far, that would be best.

[Szabi Zsoldos]

Well something like this like in a while when comparing currency changes, but I just dont get it ...

echo '<table border="1" cellpadding="5">';

$previous = null;
foreach($garantie->TESTverificaFiecareCodDinCos($comanda) as $camp) {
    echo '<tr><td></td><td>'.$camp['cos'].'</td><td>'.$camp['pozitie'].'</td><td>'.$camp['cod_garantie'].'</td><td>'.$camp['matnr'].'</td></tr>';
    if($previous['cod_garantie'] != '') {
        echo '<tr><td><b>EMPTY</b></td><td></td><td><b style="color: red;">'.($previous['pozitie']+2).'</b></td><td></td><td></td></tr>';
    } else {
        $previous = $camp;
    }       
}

echo '</table>';

[IIM]

can you tell what exatly output you desire as third figure is confusing me??

[Szabi Zsoldos]

Yes, the EMPTY(exception) has to have the Position of previous Position + 1
This means that the non-exeption have to shift their values up by one also.

[cereal]

So if $camp['pozitie'] has a specific value and $camp['cod_garantie'] is empty, you have to alter all the following positions, correct?

You can add a counter and add it to the position key, here's an example:

<?php

$datum[] = array('name' => 'sun', 'pos' => 1, 'magnitude' => '-26.74');
$datum[] = array('name' => 'venus', 'pos' => 2, 'magnitude' => '-5');
$datum[] = array('name' => 'sedna', 'pos' => 3, 'magnitude' => '');
$datum[] = array('name' => 'neptune', 'pos' => 4, 'magnitude' => '8');
$datum[] = array('name' => 'io', 'pos' => 5, 'magnitude' => '');
$datum[] = array('name' => 'moon', 'pos' => 6, 'magnitude' => '-12.74');

echo PHP_EOL;

$i = 0;

foreach($datum as $key => $value)
{
        if(empty($value['magnitude']))
        {
                $i++;
        }

        if($i > 0) $value['pos'] = $value['pos'] + $i;

        echo "\t" . $value['pos'] . ' ' . $value['name'] ."\t" . $value['magnitude'] . PHP_EOL;
}

echo PHP_EOL;

will output:

1 sun       -26.74
2 venus     -5
4 sedna 
5 neptune   8
7 io    
8 moon      -12.74

Note rows 4 and 7, the original values are 3 and 5.

[Szabi Zsoldos]

Cereal thanks for the heads up, it's simpler than i tought :)

This is my solving of the problem, with your help.

    <?php

    $i = 0;
    $j = 1;
    foreach($garantie->TESTverificaFiecareCodDinCos($comanda) as $camp) {       
        if(!empty($camp['cod_garantie'])) {
            $i++;
        }

        if($i > 0) {
            $camp['pozitie'] = $camp['pozitie'] + $i;
        }
        if(!empty($camp['cod_garantie'])) {
            echo ($camp['pozitie']-1)."\t\t".$camp['matnr']."\t\t".$camp['mfrpn'].'<br />';
        } else {
            echo $j."\t\t".$camp['pozitie']."\t\t".$camp['matnr']."\t\t".$camp['mfrpn'].'<br />';
        }
        $j++;
    }

    ?>