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<?php echo uppercase_letters('ac84894987984987AD', 2); echo uppercase_letters('acaDdf984987Ad', 10); function uppercase_letters($str, $start, $end){ $strlen = strlen($str); $str_uc = strtoupper(substr($str, $start, $end)); $then = substr($str, $end, $strlen); return $str_uc . $then; }
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught ArgumentCountError: Too few arguments to function uppercase_letters(), 2 passed in /in/c4anK on line 3 and exactly 3 expected in /in/c4anK:6 Stack trace: #0 /in/c4anK(3): uppercase_letters('ac8489498798498...', 2) #1 {main} thrown in /in/c4anK on line 6
Process exited with code 255.

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