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<?php var_dump(preg_match('{\bFirePHP/\d++\.\d++\b}', 'FirePHP/12345678901234567890123456789012345678901234567891234567890123456789.12345678901234567890123456789012345678901234567891234567890123456789a'));
Output for git.master, git.master_jit, rfc.property-hooks
int(0)

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