nvalid argument supplied for foreach()

[stijn0713]

What is invalid in this expression?

 

It seems, it does the job tho

 

foreach ($_POST as $key => $value){

 

foreach($value as $k => $v){

 

 

also this seems to be invalid

 

foreach ($_SESSION as $value){

 

foreach($value as $k => $v){

[trq]

In both examples, $value is quite obviously not an array if that is the error you are receiving.

[lfernando]

Either $_POST, $value or $_SESSION are not arrays, so the "foreach" expression is invalid.

 

Try using if(is_array($value)) {  foreach($value..  }

 

Its always a good idea to check if the variable is an array before performing a foreach

 

[stijn0713]

my post and sessions arrays are two dimentional. I thought that was the way of iterating throught a 2dim array?

 

Maybe because, the SESSION and POST is not always 2 layers deep, i should indeed do

 

if(is_array($value) ?

[stijn0713]

Solved, thanks for the tip!