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<?php $examples = [ 'Sep 04-08', 'Sep 29-Oct 01', ]; $result = []; foreach ($examples as $example) { var_export( explode('-', preg_replace('/^(\D{4})\d{2}-\K(?=\d)/', '$1', $example)) ); echo "\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => 'Sep 04', 1 => 'Sep 08', ) array ( 0 => 'Sep 29', 1 => 'Oct 01', )

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