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<?php $string = 'ab.cd.ef.gh.ij.kl.mn.op.qr'; $split = array_map( function($value) { return implode('.', $value); }, array_chunk(explode('.', $string), 2) ); var_dump($split);
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(5) { [0]=> string(5) "ab.cd" [1]=> string(5) "ef.gh" [2]=> string(5) "ij.kl" [3]=> string(5) "mn.op" [4]=> string(2) "qr" }
Output for 4.3.8
Parse error: parse error, unexpected T_FUNCTION, expecting ')' in /in/fe4kt on line 6
Process exited with code 255.

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