<?php
 
$bio= "Tom, male, spain";
 
$list = array(
    1 => array("Tom", "male", "UK"),
    8 => array("bob", "Male", "spain"),
    4 => array("Tom", "male", "spain"),
    9 => array("sam", "femail", "United States")
);
 
#print_r($list);
 
$percent_old = 0;
foreach ($list as  $key => $value ) # loop the arrays
{
    $text = implode(", ", $value); # implode the arrays to get a string similar to $bio
    similar_text($bio, $text, $percent); # get a percentage of similar text
 
    if ($percent > $percent_old) # check if the current value of $percent is > to the old one
    {
        $percent_old = $percent; # assign $percent to $percent_old
        $final_result = $key; # assign $key to the value of $final_result
    }
}
 
print $final_result;
 

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