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<?php $strings = [ "test string", "lado lomidze needs a solution", "i made some research and found 'good' answers here; they really helped me." ]; // if not already all lowercase, use strtolower() foreach ($strings as &$string) { for ($i = 0, $len = strlen($string); $i < $len; $i += 2) { $string[$i] = strtoupper($string[$i]); } } var_export($strings);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => 'TeSt sTrInG', 1 => 'LaDo lOmIdZe nEeDs a sOlUtIoN', 2 => 'I MaDe sOmE ReSeArCh aNd fOuNd \'GoOd\' AnSwErS HeRe; ThEy rEaLlY HeLpEd mE.', )

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