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<?php $data = 'id=1 username=foobar comment=This is a sample comment'; $result = preg_replace_callback( '/\b(comment=)(.+)$/ms', function (array $matches) { return $matches[0] . preg_replace("/[\r\n]+/", " ", $matches[1]); }, $data ); var_dump($result);
Output for git.master, git.master_jit, rfc.property-hooks
string(65) "id=1 username=foobar comment=This is a sample commentcomment="

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