Array help

[tqla]

I have a session array that is added to by a form. Here it is when the form is submitted twice. It can grow larger and larger in a single session but the keys are always the same. What I need to do is check all the arrays to see if the key called Form matches a variable and if it matches then I will use that values in that particular array.

 

array
0 =>
array
 'Age' => string '20' (length=2)
 'City' => string 'New York' (length=
 'Your_name' => string 'Jim' (length=3)
 'Friend1' => string 'Joseph' (length=6)
 'Friend2' => string 'Waldo' (length=5)
 'Form' => string 'help' (length=4)
1 =>
array
 'Age' => string '25' (length=2)
 'City' => string 'Sun Valley' (length=10)
 'Your_name' => string 'Susan' (length=5)
 'Friend1' => string 'Rick' (length=4)
 'Friend2' => string 'Joe' (length=3)
 'Form' => string 'welcome' (length=4)

 

I know that I can do something like this to check the first one.

 

$key = 'help';
$array = $_SESSION['array'];
if($array[0]['Form'] == $key){
echo "We have a match";
}

 

But how can I automatically cycle through [0], [1], and so on until I find a match?

 

Thank you.

Edited February 2, 2013 by tqla

[requinix]

If the "Form" is a unique string then why not use it as the array key instead of the numbers?

array
'help' =>
array
         'Age' => string '20' (length=2)
         'City' => string 'New York' (length=
         'Your_name' => string 'Jim' (length=3)
         'Friend1' => string 'Joseph' (length=6)
         'Friend2' => string 'Waldo' (length=5)
         'Form' => string 'help' (length=4)
'welcome' =>
array
         'Age' => string '25' (length=2)
         'City' => string 'Sun Valley' (length=10)
         'Your_name' => string 'Susan' (length=5)
         'Friend1' => string 'Rick' (length=4)
         'Friend2' => string 'Joe' (length=3)
         'Form' => string 'welcome' (length=4)

$key = 'help';
$array = $_SESSION['array'];
if(isset($array[$key])){
echo "We have a match";
}

Edited February 2, 2013 by requinix

[tqla]

Great suggestion! Thank you requinix! I made that change and it worked out.