<?php

$fruites = array('Mango', 'apple', 'banana', 'orange','plum', 'lime');


foreach( $fruites as $key=>$value){


    if(strlen($value) >= 5 && strlen($value)<=10){
        $fruites[$key] = array( $value, 'valid'=>1);
    }else{
        $fruites[$key] =  array( $value, 'valid'=> 0 );
    }

}

echo "<pre>";
print_r($fruites);
echo "</pre>";


foreach ($fruites as $arr){
    if($arr['valid']){
        echo "<br>";
        echo $arr[0]. " is valid";
    } else {
        echo "<br>";
        echo $arr[0]. " is non valid";
    }
}