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<?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 $string) { if (($dots = substr_count($string, '.')) >= 3) { echo "Yes, 3 or more dots ($string -> $dots)"; } else { echo "Nope, less than 3 dots ($string -> $dots)"; } echo "\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
Yes, 3 or more dots (This is. a. test. -> 3) Nope, less than 3 dots (This is a. test. -> 2) Nope, less than 3 dots (This is. a test -> 1) Nope, less than 3 dots (This is a test -> 0) Yes, 3 or more dots (This. is. a. test. -> 4)

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