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# Civetweb API Reference
### `mg_strncasecmp( s1, s2, len );`
### Parameters
| Parameter | Type | Description |
| :--- | :--- | :--- |
|**`s1`**|`const char *`|First string in the comparison|
|**`s2`**|`const char *`|Second string in the comparison|
|**`len`**|`size_t`|The maximum number of characters to compare|
### Return Value
| Type | Description |
| :--- | :--- |
|`int`|The result of the comparison|
### Description
The function `mg_strncasecmp()` is a helper function to compare two strings. The comparison is case insensitive and only a limited number of characters are compared. This limit is provided as third parameter in the function call. The return value is **0** if both strings are equal, less then zero if the first string is less than the second in a lexical comparison, and greater than zero if the first string is greater than the second.
### See Also
* [`mg_strcasecmp();`](mg_strcasecmp.md)
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