Description:
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Consideration. I choosen "September Snapshot", because I could not find mine in 
the 
list. My installation report to "PHP 5.3.3. Build Date: Jul 21 2010 20:25:38".

Alright.

I would like to ask, if is there any possibility to add, maybe through another 
non-Perl compatible modifier, the behavior we had with ereg().

The behavior I'm talking about refers to match as much as possible instead of 
stop at very first valid match.

This is useful sometimes. In my case, specially to validate input data against a 
RFC specification.

Look at this snippet: https://ideone.com/sC6mA

I tried to make it as much specific as I could.

The intention was to validate float point numbers, between zero and 1, with none 
and up to three decimals, denying invalid floats, such as 0.00 (same as zero) or 
1.0 (same as 1).

But, the "lazy" behavior of preg_match() is accepting the code above, where 
0.3444 should be denied, because of its 4 decimals.

But since 0.344 is valid in the last length verification (one and up to three), 
the function accepts the input data, and the last digit is simply ignored, 
because preg_match() already caracterized 0.344 as valid.

I hope you understand

Expected result:
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An empty array

Actual result:
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A match