Description:
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Currently http://www.php.net/manual/en/language.operators.comparison.php says in
the table:

  $a == $b   Equal      TRUE if $a is equal to $b.
  $a === $b  Identical  TRUE if $a is equal to $b, and they are
                        of the same type. (introduced in PHP 4)

This is confusing because "1.2" == "1.20" (so "$a is equal to $b"), and they are
of the same type, but "1.2" !== "1.20". In other words, the type comparison is
not the only difference between == and ===, as implied by this table.

I suggest rewording this to something like:

  $a === $b  Identical  TRUE if $a is identical in type and value to $b.

Below it also says

  The type conversion does not take place when the comparison is === or !== as
  this involves comparing the type as well as the value.

The was added due to bug 50738. However, the "as this involves" part is not
important here, but again implies that the type comparison is the only
difference, so I suggest removing it.

A section dealing specifically with the smart string comparison would be very
helpful, especially since it is different from normal string-to-number
conversion ("5z" == 5 while "5z" != "5"). This could even be a separate page
(like http://www.php.net/manual/en/language.oop5.object-comparison.php for
objects, which is linked from the second table).

Examples can come from past bugs:
bug 1974, bug 23110, bug 25763, bug 25943, bug 39084, bug 43304.