Yet Another Foo Bar Multidimensional Array Problem

If you happen to be a Multidimensional Array expert, please help!

[haryanto]

Hi guys,

I have digged up arrays information online but I still can't accomplish the task below.

I have a script that out puts an array like this:

Array
(
[widget_foo] => Array
(
[0] => 111
[1] => 111
)

[widget_bar] => Array
(
[0] => 222
[1] => 222
)
[foo_bar] => Array
(
[0] => 333
[1] => 333
)

How can I use output anything that begins with widget_?
e.g.
widget_foo,111,111
widget_bar,222,222

And how can I output anything that does not begin with widget_?
e.g.
foo_bar,333,333

Please help!

[jpjones]

Here's some example code to get you going (note, I create the array here too). It does the job - no other warranties given :)

<? 
// Create array 
$widget_foo = Array(0 => "111", 1 => "111"); 
$widget_bar = Array(0 => "222", 1 => "222"); 
$foo_bar = Array(0 => "333", 1=> "333"); 
$testarray = Array(); 
$testarray["widget_foo"] = $widget_foo; 
$testarray["widget_bar"]= $widget_bar; 
$testarray["foo_bar"] = $foo_bar; 
while (list($key, $values) = each($testarray) ) 
{ 
  $searchstring = "widget_"; 
 if (substr($key,0, strlen($searchstring)) == $searchstring) 
 { 
  print "\n" . $key; 
  for ($x = 0; $x < count($values); $x++) 
  { 
   print ",".$values[$x]; 
  } 
 } 
} 
print "\n"; 
?> 

Basically, the while (list($key, $values) etc. line tells PHP to walk through each value of the array.

We then check to see if the key value starts with the string "widget_", and if so, outputs all the values in that subarray.

If you want to output anything which does not start with "widget_", then change:

if (substr($key,0, strlen($searchstring)) == $searchstring)

to

if (substr($key,0, strlen($searchstring))!= $searchstring)

HTH,
JP

[haryanto]

Wow jpjones, it works!
That solved my YAFBMDAP problem.

I am not satisfied though.
I will try to analyze the code in the weekend to figure out the complicated part.
I am not good when it comes to arrays.
And documentation on the net sucks big time when it comes to explanation.