pack
Function • Params and return types changed in PHP 8.0
Pack data into binary string.
pack Function synopsis
pack(string $format, mixed ...$values): stringParameters
$format
Typestring
The $format string consists of format codes
followed by an optional repeater argument. The repeater argument can
be either an integer value or * for repeating to
the end of the input data. For a, A, h, H the repeat count specifies
how many characters of one data argument are taken, for @ it is the
absolute position where to put the next data, for everything else the
repeat count specifies how many data arguments are consumed and packed
into the resulting binary string.
$values
Variadic, OptionalTypemixed
Return value
Typestring
Returns a binary string containing data.
Changes to the pack Function
PHP 8.0
- Return type added:
string - Parameter type added for parameter #1 (
$format):string - Parameter name of parameter #2 changed:
$argsto$values - Parameter type added for parameter #2 (
$values):mixed
- pack($format, ...$args)
+ pack(string $format, mixed ...$values): stringpack Function Availability
pack 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 |