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<?php $arr = array ( 1 => 'one', 2 => 'two', 3 => 'three', 4 => 'four' ); $comma_separated = implode(", ", $arr); echo preg_replace('/\,([^,]+)$/', ' and $1', $comma_separated);
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
one, two, three and four

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