quoth the 1st Camel, on pg. 96, and the 2nd Camel, on pg. 99: <it>

for ($I = 1; $i < 10; $i++) {
      ...
}
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is the same as

$i = 1;
while( $i < 10) {
     ...
}
continue {
     $i++;
}
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Personally, I like the symmetry it gives the language.
(if only it had an elswhile clause to complete the symmetry...)