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<?php $string = "1A1R0A"; var_export(preg_match_all('~(\d)\K\D~', $string, $out) ? [$out[1], $out[0]] : [[], []]); echo "\n--- or ---\n"; [$letters, $numbers] = preg_match_all('~(\d)\K\D~', $string, $out) ? $out : [[], []]; var_export($numbers); echo "\n"; var_export($letters);
Output for 7.1.25 - 7.1.30, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array ( 0 => array ( 0 => '1', 1 => '1', 2 => '0', ), 1 => array ( 0 => 'A', 1 => 'R', 2 => 'A', ), ) --- or --- array ( 0 => '1', 1 => '1', 2 => '0', ) array ( 0 => 'A', 1 => 'R', 2 => 'A', )

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