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run code in 300+ PHP versions simultaneously
<?php $strings = ['This is. a.. test...', 'This is a........... test.', '...This is. a.. ..test', 'This is a test', 'This. is... a. test.' ]; foreach ($strings as $string) { if (preg_match('~(?<!\.)\.{3}(?!\.)~', $string)) { echo "Yes, found an occurrence of not more than 3 dots in a row ($string)"; } else { echo "Nope, no occurrence of exactly 3 dots in a row ($string)"; } echo "\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
Yes, found an occurrence of not more than 3 dots in a row (This is. a.. test...) Nope, no occurrence of exactly 3 dots in a row (This is a........... test.) Yes, found an occurrence of not more than 3 dots in a row (...This is. a.. ..test) Nope, no occurrence of exactly 3 dots in a row (This is a test) Yes, found an occurrence of not more than 3 dots in a row (This. is... a. test.)

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