function replaceNextMatchingNote($text, $instr_val, $dur, $donor)
{
$stave_start = findStaveN($text, $instr_val, 0);
$pattern = "/:" . $dur . "\\(?[A-G][#@n]?\\*/";
$matches = [];
preg_match($pattern, $text, $matches, PREG_OFFSET_CAPTURE, $stave_start);
$match_index = $matches[0][1];
$star_index = strpos($text, '*', $match_index);
$first_portion = substr($text, 0, $star_index);
$second_portion = substr($text, $star_index + 1);
$concatenated = $first_portion . $donor . $second_portion;
return $concatenated;
}
function findAvailableNotes($s, $n)
{
$stave = findStaveN($s, $n, 0);
// Count 32nd notes
$matches = array();
preg_match_all("/:32\\(?[A-G][#@n]?\\*/", $stave, $matches);
$thirtyseconds = isset($matches[0]) ? count($matches[0]) : 0;
// Count 16th notes
$matches = array();
preg_match_all("/:16\\(?[A-G][#@n]?\\*/", $stave, $matches);
$sixteenths = isset($matches[0]) ? count($matches[0]) : 0;
// Count 8th notes
$matches = array();
preg_match_all("/:8\\(?[A-G][#@n]?\\*/", $stave, $matches);
$eighths = isset($matches[0]) ? count($matches[0]) : 0;
// Count dotted 8th notes
$matches = array();
preg_match_all("/:8d\\(?[A-G][#@n]?\\*/", $stave, $matches);
$dotted_eighths = isset($matches[0]) ? count($matches[0]) : 0;
// Count quarter notes
$matches = array();
preg_match_all("/:4\\(?[A-G][#@n]?\\*/", $stave, $matches);
$quarters = isset($matches[0]) ? count($matches[0]) : 0;
// Count dotted quarter notes
$matches = array();
preg_match_all("/:4d\\(?[A-G][#@n]?\\*/", $stave, $matches);
$dotted_quarters = isset($matches[0]) ? count($matches[0]) : 0;
// Count half notes
$matches = array();
preg_match_all("/:h\\(?[A-G][#@n]?\\*/", $stave, $matches);
$halves = isset($matches[0]) ? count($matches[0]) : 0;
// Count dotted half notes
$matches = array();
preg_match_all("/:hd\\(?[A-G][#@n]?\\*/", $stave, $matches);
$dotted_halves = isset($matches[0]) ? count($matches[0]) : 0;
// Count whole notes
$matches = array();
preg_match_all("/:w\\(?[A-G][#@n]?\\*/", $stave, $matches);
$wholes = isset($matches[0]) ? count($matches[0]) : 0;
$occurances = array("eighths" => $eighths, "sixteenths" => $sixteenths, "quarters" => $quarters, "halves" => $halves, "wholes" => $wholes, "dotted_quarters" => $dotted_quarters, "dotted_halves" => $dotted_halves, "dotted_eighths" => $dotted_eighths, "thirtyseconds" => $thirtyseconds);
return $occurances;
}
