How to check a partial similarity of two strings in PHP

Question

Is it any function in PHP that check the % of similarity of two strings?

For example i have:

$string1=\"Hello how are you doing\" 
$string2= \" hi,          


        

Answer 1

As other answers have already said, you can use similar_text. Here's the demonstration:

$string1="Hello how are you doing" ;
$string2= " hi, how are you";

echo similar_text($string1, $string2, $perc); //12

echo $perc; //61.538461538462

will return 12, and will set in $perc the percentage of similarity as you asked for.