[RndTbl] php head-exploding moment

[Trevor Cordes]

cat z.php

<?
$a=[0=>'2', 1=>'3'];

foreach ($a as $k=>&$v) {
  $v++;
  echo "$k,$v\n";
}

#unset($v);

echo "\n";

foreach ($a as $k=>$v) {
  echo "$k,$v\n";
}

echo "\n";
?>


Ok, guess what this prints out?

0,3
1,4

0,3
1,4

Right?  Wrong:

0,3
1,4

0,3
1,3


Until I stumble on this, see the Warning on second page.
https://www.php.net/manual/en/control-structures.foreach.php

This has got to be the most messed up fail by a language ever because in
no circumstances would any sane programmer ever expect this from any
language and in no way would any programmer ever want this behavior nor
could it ever be useful ever.

Perl (an early (first?) adopter of the "foreach") doesn't do this.

Surely php can "fix" this somehow.

The recommended "fix" is to uncomment the "unset" in the code to unlink
the reference.