PHP similar_text() Function

PHP similar_text() Function

The similar_text() function in PHP calculates the similarity between two strings.

Syntax

similar_text ( string $first , string $second [, float &$percent ] )

Parameter

first(required): This parameter represents the first string to be compared.

second(required): This parameter represents the second string to be compared.

percent(optional): This parameter specifies a variable name for storing the similarity in percent.

Return

This function returns the number of matching chars in both strings.

Example 1

<?php  
// initializing the string 1
$str1= "Hello world";
// initializing the string 2
$str2= "Hello PHP"; 
// calculating the similarity between the given two strings
echo "The similar_text() function will return: ".similar_text($str1,$str2);  
?> 

Output

The similar_text() funtion will return: 6

Example 2

<?php  
// initializing the string 1
$str1= "Hello world";
// initializing the string 2
$str2= "Hello PHP"; 
// calculating the similarity between the given two strings
similar_text($str1,$str2,$percent);  
echo "The character percent is ";
echo $percent."%";
?> 

Output

The character percent is 60%