<?php
    $prev1 = array(
    "ema99" => "0.0010309",
    "ema200" => "0.00010166",
    "price" => "0.00010670",
    "ema9" => "0.00010688",
    "ema20" => "0.00010616",
    "ema26" => "0.00010576",
    "ema50" => "0.00010448",
    );

print_r(getColorRanges($prev1));


function getColorRanges($prev1){
    $prev = array();
    $i = 0; // iterator to assign associative array
    $ref;  // used to as index of price
    $temp; // to assign prev value to compare indexes if difference is -1 so it is in the order
    $t = true; // previously i gave it true as a considering sequence is in the order if once it is broken there is no chance of it is coming true and i false it
    $true = ['0' => 0 , '9' => 1, '20' => 2, '26' => 3, '50' => 4, '99' => 5, '200' => 6];

    foreach ($prev1 as $key => $value) {
        if($key == "price"){
            $prev[0] = $i;
        }
        else {
            $prev[substr($key,3,strlen($key)-3)] = $i;
        }
        $i++;
    }

    $ref = $prev[0];
    $i = 0;

    foreach ($prev as $key => $value) {
        if($prev[$key] < $ref){
            $prev1['ema'.$key] = 'red';
        }
        else if($prev[$key] == $ref){
            if ((($prev[0] > $prev[99] || $prev[0] > $prev[200]) && $ref <= 2) || $ref == 0) {
                $prev1['price'] =  'blue';
                }
            else if($ref == 6){
                $prev1['price'] = 'red';
            }
            else{
                $prev1['price'] = 'green';
            }
        }
        else {
            if(($true[$temp] - $true[$key] == -1) && $t){
                $prev1['ema'.$key] = 'blue';
            }else{
                $t = false;
                $prev1['ema'.$key] = 'green';
            }
        }
        $temp = $key;
    }
    return $prev1;
}