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<?php $chords = ['C', 'C#', 'D', 'D#', 'E', 'F', 'F#', 'G', 'G#', 'A', 'A#', 'B']; // Therefore, If the original chord is E and we want to transpose +1, the resulting chord is F. If we transpose +4, the resulting chord is G#. $index = array_search('E', $chords); // Transpose +4 to get the index of E, found above, +4 chords $chord = $chords[$index+4]; echo 'Chord: ' + $chord;
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: Unsupported operand types: string + string in /in/JTeir:12 Stack trace: #0 {main} thrown in /in/JTeir on line 12
Process exited with code 255.

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