[SOLVED] foreach confusion

[14pulsars]

Hi folks, a small question.

 

I have two arrays, one named $sku, and a 2-d array named  $productInfo.

I need to reference the $productInfo array and another POST variable that has a naming format "productn" where n is an integer, starting from 1, from a loop responsible for printing the contents of the $sku array.

 

This works just fine:

foreach ($sku as $key => $value)
     echo $key.'=>'.$value.'<br />';

 

But the following renders absolutely nothing, not even the strings:

foreach ($sku as $key => $value)
     echo $_POST['product'.$key + 1].'=>'.$productInfo[$value]['filename'].'<br />';

 

Can someone spot my error? Where is my logic flawed?

Any help would be appreciated...

[14pulsars]

anyone?

[BlueSkyIS]

for the second case, you really get absolutely nothing, not even '=>'?

 

if so, that makes me think you have errors turned off and we're not seeing an error we should be seeing.

[wildteen88]

This:

oreach ($sku as $key => $value)
     echo $_POST['product'.$key + 1].'=>'.$productInfo[$value]['filename'].'<br />';

Should be:

oreach ($sku as $key => $value)
     echo $_POST['product'.($key + 1)].'=>'.$productInfo[$value]['filename'].'<br />';

Whenever doing any form of arithmetic within strings always wrap it in parenthesis.

[14pulsars]

This:

oreach ($sku as $key => $value)
     echo $_POST['product'.$key + 1].'=>'.$productInfo[$value]['filename'].'<br />';

Should be:

oreach ($sku as $key => $value)
     echo $_POST['product'.($key + 1)].'=>'.$productInfo[$value]['filename'].'<br />';

Whenever doing any form of arithmetic within strings always wrap it in parenthesis.

 

This fixed the first part of my problem - I switched to a regular array to fix the second.

 

Thanks for your help!