strncmp

Function • Params and return types changed in PHP 8.0

Binary safe string comparison of the first n characters.

PHP 5

PHP 7

Improved

PHP 8.1

PHP 8.2-8.3

PHP 8.4

PHP 8.5

PHP 8.6

`strncmp` Function synopsis

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

Parameters

`$string1`

Typestring

The first string.

`$string2`

Typestring

The second string.

`$length`

Typeint

Number of characters to use in the comparison.

Return value

Typeint

Changes to the `strncmp` Function

PHP 8.0

Return type added: int
Parameter name of parameter #1 changed: $str1 to $string1
Parameter type added for parameter #1 ($string1): string
Parameter name of parameter #2 changed: $str2 to $string2
Parameter type added for parameter #2 ($string2): string
Parameter name of parameter #3 changed: $len to $length
Parameter type added for parameter #3 ($length): int

  strncmp(
-     $str1,
+     string $string1,
-     $str2,
+     string $string2,
-     $len
+     int $length
-   )
+   ): int

`strncmp` Function Availability

PHP Version	Availability
PHP 8.6Upcoming Release	Yes
PHP 8.5Supported (Latest)	Yes
PHP 8.4Supported	Yes
PHP 8.3Security-Fixes Only	Yes
PHP 8.2Security-Fixes Only	Yes
PHP 8.1Unsupported	Yes
PHP 8.0Unsupported	Yes
PHP 7.4Unsupported	Yes
PHP 7.3Unsupported	Yes
PHP 7.2Unsupported	Yes
PHP 7.1Unsupported	Yes
PHP 7.0Unsupported	Yes
PHP 5.6Unsupported	Yes
PHP 5.5Unsupported	Yes
PHP 5.4Unsupported	Yes
PHP 5.3Unsupported	Yes