<?php
$bass = "Cb";
$selected_scale = 11;
$major_scales = array
(
array("C","D","E","F","G","A","B","C","D","E","F","G","A","B",),
array("C#","D#","E#","F#","G#","A#","B#","C#","D#","E#","F#","G#","A#","B#",),
array("Db","Eb","F","Gb","Ab","Bb","C","Db","Eb","F","Gb","Ab","Bb","C",),
array("D","E","F#","G","A","B","C#","D","E","F#","G","A","B","C#"),
array("D#","E#","F##","G#","A#","B#","C##","D#","E#","F##","G#","A#","B#","C##"),
array("Eb","F","G","Ab","Bb","C","D","Eb","F","G","Ab","Bb","C","D"),
array("E","F#","G#","A","B","C#","D#","E","F#","G#","A","B","C#","D#"),
array("E#","F##","G##","A#","B#","C##","D##","E#","F##","G##","A#","B#","C##","D##"),
array("Fb","Gb","Ab","Bbb","Cb","Db","Eb","Fb","Gb","Ab","Bbb","Cb","Db","Eb"),
array("F","G","A","Bb","C","D","E","F","G","A","Bb","C","D","E"),
array("F#","G#","A#","B","C#","D#","E#","F#","G#","A#","B","C#","D#","E#"),
array("Gb","Ab","Bb","Cb","Db","Eb","F","Gb","Ab","Bb","Cb","Db","Eb","F"),
array("G","A","B","C","D","E","F#","G","A","B","C","D","E","F#"),
array("G#","A#","B#","C#","D#","E#","F##","G#","A#","B#","C#","D#","E#","F##"),
array("Ab","Bb","C","Db","Eb","F","G","Ab","Bb","C","Db","Eb","F","G"),
array("A","B","C#","D","E","F#","G#","A","B","C#","D","E","F#","G#"),
array("A#","B#","C##","D#","E#","F##","G##","A#","B#","C##","D#","E#","F##","G##"),
array("Bb","C","D","Eb","F","G","A","Bb","C","D","Eb","F","G","A"),
array("B","C#","D#","E","F#","G#","A#","B","C#","D#","E","F#","G#","A#"),
array("B#","C##","D##","E#","F##","G##","A##","B#","C##","D##","E#","F##","G##","A##"),
array("Cb","Db","Eb","Fb","Gb","Ab","Bb","Cb","Db","Eb","Fb","Gb","Ab","Bb")
);
// if value exists in mentioned index
if (in_array($bass,$major_scales[$selected_scale])){
// index of that value in that array
$tmp_ind = array_search($bass,$major_scales[$selected_scale]);
// length of the array
$len = count($major_scales[$selected_scale]);
// store values after this value
$res = [];
for ($i=$tmp_ind;$i<$len;$i++){
$res[$i] = $major_scales[$selected_scale][$i];
}
}
print_r($res);