Question

I’ve got this 2 variables that I want to compare on a certain way. So I already figured out that I have to put it in a array and compare them that way. But there’s the problem.

If my input is ‘rieebbb’, random sequence.
And my other input is ‘beer’ as in, the word beer.

How do I check if the letters in beer are all in ‘rieebbb’ and that I all use them once?
So ‘riebbb’ shouldn’t give a positive answer because I am missing a ‘e’ in the random sequence.

I’ve already tried array_intersect() but that did’nt totaly work because it didn’t check for letters already used in array 1.

Answer 1

Do a frequency match..count the occurrence of each character in say “beer” and store that in an array A.

That would be {{b,1},{e,2},{r,1})..

Do the same on your target string.

Compare the two arrays for the letters in the array A.
That should solve it.

Here’s the code for the same:

<?php
$data = "beer";

$data2="rebe";
$p=0;
$q=0;
$stat=0;
foreach (count_chars($data, 1) as $i => $val)   
{
  $arr1[$p][0]=chr($i);
  $arr1[$p][1]=$val;
  $p=$p+1;
}
foreach (count_chars($data2, 1) as $j => $val2) 
{
    $arr2[$q][0]=chr($j);
    $arr2[$q][1]=$val2;     
    $q=$q+1;
}

for($st=0;$st<$q;$st=$st+1)
{
        for($sp=0;$sp<$p;$sp=$sp+1)
        {
            if($arr2[$st][0]==$arr1[$sp][0])
            {
                    if($arr2[$st][1]<$arr1[$sp][1])
                    {
                            $stat=1;
                    }
            }
    }
}
if($stat==0)
{
echo "They match";
}
     else
{
 echo "They dont match";
}
?>