PHP: similar_text() function
PHP: Calculate the similarity between two strings
The similar_text() function is used to calculate the number of similar characters between two strings.
The similar_text() function can also calculate the similarity of the strings in percent.
Version:
(PHP 4 and above)
Syntax:
similar_text(first_string, second_string, npercent)
Parameter:
| Name | Description | Required / Optional |
Type |
|---|---|---|---|
| first_string | The first input string. | Required | String |
| second_string | The second input string. | Required | String |
| npercent | Variable to store the percentage of similarity between the input strings. | Optional | Integer |
Return value:
Returns the number of matching chars in both strings.
Value Type: Integer
Example:
<?php
echo "Comparing strings : 'Good Morning' and 'Good Evening'".'<br>';
echo 'No of similar characters : '.similar_text('Good Morning', 'Good Evening').'<br>';
similar_text('Good Morning', 'Good Evening', $similar_percent);
echo 'Similarity between two strings in percentage : '. $similar_percent;
?>
Output:
Comparing strings: 'Good Morning' and 'Good Evening' No of similar characters : 9 Similarity between two strings in percentage : 75
View the example in the browser
See also