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Bug #12193 nested loops using each don't work
Submitted: 2001-07-16 16:27 UTC Modified: 2001-07-16 16:50 UTC
From: adresse at brutele dot be Assigned:
Status: Closed Package: Arrays related
PHP Version: 4.0.6 OS: windows
Private report: No CVE-ID: None
View Developer Edit
 [2001-07-16 16:27 UTC] adresse at brutele dot be 
when tho loops using each are nested, the outer while loop stops after the first iteration.

For instance, the output of the following script :

  $outer=array("o1", "o2");
  $inner=array("i1","i2");
  while (list($o_index, $o) = each($outer))
    while (list($i_index, $i) = each($inner))
      echo $o, $i, "<br>";
is
  o1i1
  o1i2
instead of
  o1i1
  o1i2
  o2i1
  o2i2

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 [2001-07-16 16:50 UTC] zeev@php.net 
list() = each() is not a loop.  each() is a simple function, that returns a key,value pair, and advances the internal array pointer to the next pair.  It has no idea it's being used inside a loop, and thus, nothing makes this internal pointer go back to the beginning of the array when the loop ends.

Solutions:
- Use foreach()
or
- Call reset() on the array at the end of the loop.
 
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