[SOLVED] array modified without modifing instruction Oo

[Zwiter]

Hello all

More than explanation, here is the code :

<?php
print_r($columns);
print_r($titles);
foreach($columns as $key => $value) {
print_r($titles);
die;
[other instructions]
}?>

And here is extract of each print_r:

print_r($columns):
Array
(
  [project_cmts] => Array
    (
      [title] => Project comments
      [excel] => Project comments
    )
    [...]
)

first print_r($titles):
Array
(
    [...]
    [Comments] => //empty string
    [...]
)

fsecond print_r($titles):
Array
(
    [...]
    [Comments] => Array
        (
            [title] => Project comments
            [excel] => Project comments
        )
    [...]
)

 

As you can see, the content of $titles was changed, but how?

 

Thank you!

Z.

[discomatt]

Well, excluding code makes it pretty much impossible to debug.

 

[other instructions] <- probably your issue

[Zwiter]

i have a die instruction.

how come the next instructions may help?

Anyway, here they are :

<?php
print_r($columns);
print_r($titles);
foreach($columns as $key => $value) {
print_r($titles);
die;

if (array_key_exists($value['excel'], $titles))
	$titles[$value['excel']] = $key;
else $titles[$value['excel']] = false;
}
?>

 

But the problem is still the same with this code:

<?php
print_r($columns);
print_r($titles);
foreach($columns as $key => $value) {
print_r($titles);
die;
}

?>

[discomatt]

Dur, die ends the execution of the script. I have no idea why you have it in a loop without any clauses.

[Zwiter]

I have found the problem.

I found that the only way left after i have delete all instuctions inside my foreach is reference.

So i trac all the reference in my page ( I use some to modify data, especialy array content).

 

And i found it :

//  ok
$titles = array_flip($titles);
foreach ($titles as $key => $value)
	$titles[$key] = NULL;

//  no ok
$titles = array_flip($titles);
foreach ($titles as &$value)
	$value = NULL;

 

I am programming in perl and php at same time. (php for the user interface, and perl to run scripts on data (DNA stuff))

So variables which are local in perl, and disapear after the end of the block code are not deleted in php. So the reference stayed and annoyed me.

 

thank you for your help.

Z.