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<?php $yourstring='C7,22801422CFE0F63,2280141C5EF0F63,22801402EFD0F63,2280138C5ED0F63,228024329897530,228023829877530'; $pattern = '~ (?!^)(\h*,\h*(?<value>[0-9]{7}[A-F0-9]{8})) | (?<first>[a-zA-Z0-9]+)(?=(?1)*$) ~xA'; if ( preg_match_all($pattern, $yourstring, $matches) ) { echo $matches['first'][0], PHP_EOL; print_r(array_values(array_filter($matches['value']))); }
Output for git.master, git.master_jit, rfc.property-hooks
C7 Array ( [0] => 22801422CFE0F63 [1] => 2280141C5EF0F63 [2] => 22801402EFD0F63 [3] => 2280138C5ED0F63 [4] => 228024329897530 [5] => 228023829877530 )

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