combine php array, with matching values

 Create new array to hold all then sort it and implode it into a string 
   <?php
    $arrayOne = array(
        0 => "new",
        1 => "old",
        2 => "fresh",
        3 => "new",
        4 => "old",
        5 => "fresh",
        6 => "new",
        7 => "old",
        8 => "fresh",

        );
    $arrayTwo = array(
       0 => "yellow",
       1 => "green",
       2 => "red",
       3 => "blue",
       4 => "grey",
       5 => "orange",
       6 => "purple",
       7=> "pink",
       8 => "brown"
       );
    $arrayThree =array(
      0 => "Monday",
      1 => "Tuesday",
      2 => "Wednesday",
      3 => "Thursday",
      4 => "Friday",
      5 => "Saturday",
      6 => "Sunday",
      7 => "Monday2",
      8 => "Monday3"
      );
    $returnVariable=array();
    for($index = 0; $index<count($arrayOne); $index++){

     $returnVariable[$index][0]= '<td>'.$arrayOne[$index].'</td>';
     $returnVariable[$index][1]= '<td>'.$arrayTwo[$index].'</td>';
     $returnVariable[$index][2]= '<td>'.$arrayThree[$index].'</td>';

    }
    sort($returnVariable);
    echo "<table>";
     for ($i=0; $i<count($returnVariable); $i++) {
            if (@is_array($returnVariable[$i])) 
                $returnVariable[$i] = implode($returnVariable[$i]," ");
    echo "<tr>";

        print $returnVariable[$i];
        echo "</tr>";

    }
    echo "</table>";

Straight-forward solution:

$arrayOne = array(0 => "new",1 => "old",2 => "fresh",3 => "new",4 => "old",5 => "fresh",6 => "new",7 => "old",8 => "fresh",);
$arrayTwo = array(0 => "yellow",1 => "green",2 => "red",3 => "blue",4 => "grey",5 => "orange",6 => "purple",7=> "pink",8 => "brown");
$arrayThree = array(0 => "Monday",1 => "Tuesday",2 => "Wednesday",3 => "Thursday",4 => "Friday",5 => "Saturday",6 => "Sunday",7 => "Monday2",8 => "Monday3");

$result = [];
foreach($arrayOne as $k => $v){
    $result[$v][] = "<tr><td>$v</td><td>{$arrayTwo[$k]}</td><td>{$arrayThree[$k]}</td></tr>";
}

echo '<table>';
foreach(['new', 'old', 'fresh'] as $k){
    echo implode("", $result[$k]);
}
echo '</table>';

The output (push "Run code snippet"):

<table border="1"><tr><td>new</td><td>yellow</td><td>Monday</td></tr><tr><td>new</td><td>blue</td><td>Thursday</td></tr><tr><td>new</td><td>purple</td><td>Sunday</td></tr><tr><td>old</td><td>green</td><td>Tuesday</td></tr><tr><td>old</td><td>grey</td><td>Friday</td></tr><tr><td>old</td><td>pink</td><td>Monday2</td></tr><tr><td>fresh</td><td>red</td><td>Wednesday</td></tr><tr><td>fresh</td><td>orange</td><td>Saturday</td></tr><tr><td>fresh</td><td>brown</td><td>Monday3</td></tr></table>

Another way to do it is

 $row ="";
 $temp = array();
 foreach($arrayOne as $key => $value){
  $temp[$value][] = $key;
 }
foreach($temp as $value){
   foreach($value as $value2){
     $row .= ' '.$arrayOne[$value2].'';
     $row .= ' '.$arrayTwo[$value2].'';
     $row .= ' '.$arrayThree[$value2]."\n";
   }
}
echo $row;

Live demo : https://eval.in/850007

Using array_multisort() with a custom sorting order might seem the most intuitive solution, but this risks alphabetizing subsequently nominated arrays to "break ties" while sorting within each group. Demo

$priority = array_flip($arrayOne);
array_multisort(
    array_map(fn($v) => $priority[$v], $arrayOne),
    $arrayOne,
    $arrayTwo,
    $arrayThree
);

Instead, sort the first array and retain its original indexes to preserve relationships to the other arrays. Demo

$priority = array_flip($arrayOne);
uasort(
    $arrayOne,
    fn($a, $b) => $priority[$a] <=> $priority[$b]
);

foreach ($arrayOne as $i => $v) {
    printf("%s, %s, %s\n", $v, $arrayTwo[$i], $arrayThree[$i]);
}

As previously mentioned, it is curious why you have these 3 separate arrays in the first place. Coding would be simpler if you had a single 2d array containing these payloads. Then you could use: Sorting a php array of arrays by custom order