===> $content[4]: ABCD 123 456 789


Current array element is: abcdABCD1234567890xyz
         Next 10 char after the match: 1234567890
Current array element is: abcd12345ABCD0ABCD
         Next 10 char after the match: 1234567890
Current array element is: ABCD1234ABC
         Next 10 char after the match: 1234567890
Current array element is: qwertyABCD1234567890
         Next 10 char after the match: 1234567890
Current array element is: ABCD 123 456 789
         Next 10 char after the match: 1234567890