strncmp() - string

This function is similar to strcmp(), with the
   difference that you can specify the (upper limit of the) number of
   characters from each string to be used in the comparison.

Parameters : 
 str1 - The first string. 
 str2 - The second string. 
 len - Number of characters to use in the comparison. 

Syntax

int strncmp
    ( string $str1
   , string $str2
   , int $len
   )

Example

Output / Return Value

Limitations

Alternatives / See Also

Reference