PHP 4 >= 4.0.2, PHP 5, PHP 7, PHP 8
strncasecmp - Binary safe case-insensitive string comparison of the first n characters

strncasecmp( string$string1, string$string2, int$length ): int

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



The first string.


The second string.


The length of strings to be used in the comparison.

Return Values

Returns < 0 if string1 is less than string2; > 0 if string1 is greater than string2, and 0 if they are equal.

Related Functions

Example of strncasecmp

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Function strncasecmp:

Strings Functions

Most used PHP functions