zlib_encode

Function • Params and return types changed in PHP 8.0

Compress data with the specified encoding.

PHP 5.3
PHP 5.4
Added
PHP 5.5-5.6
PHP 7
PHP 8.0
Improved
PHP 8.1
PHP 8.2-8.3
PHP 8.4
PHP 8.5
PHP 8.6

zlib_encode Function synopsis

zlib_encode(
    string $data,
    int $encoding,
    int $level = -1
  ): string|false

Parameters

$data

Typestring

The data to compress.

$encoding

Typeint

The compression algorithm. Either ZLIB_ENCODING_RAW, ZLIB_ENCODING_DEFLATE or ZLIB_ENCODING_GZIP.

$level

OptionalTypeintDefault value-1

Return value

Typestring|false

Changes to the zlib_encode Function

PHP 8.0

  • Return type added: string|false
  • Parameter type added for parameter #1 ($data): string
  • Parameter type added for parameter #2 ($encoding): int
  • Parameter type added for parameter #3 ($level): int
  • Parameter default value added for position #3 ($level): -1
  zlib_encode(
-     $data,
+     string $data,
-     $encoding,
+     int $encoding,
-     $level
+     int $level = -1
-   )
+   ): string|false

PHP 5.4

  • Function added

zlib_encode Function Availability

PHP VersionAvailability
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 No