PHP Manual
ZipArchive
Set the encryption method of an entry defined by its index

ZipArchive::setEncryptionIndex

(PHP >= 7.2.0, PHP 8, PECL zip >= 1.14.0)

ZipArchive::setEncryptionIndex — Set the encryption method of an entry defined by its index

Description

public ZipArchive::setEncryptionIndex(int $index, int $method, ?string $password = null): bool

Set the encryption method of an entry defined by its index.

Parameters

index: Index of the entry.
method: The encryption method defined by one of the ZipArchive::EM_ constants.
password: Optional password, default used when missing.

Return Values

Returns true on success or false on failure.

Changelog

Version	Description
8.0.0	`password` is now nullable.

Notes

Note:
This function is only available if built against libzip ≥ 1.2.0.

See Also

ZipArchive::setPassword() - Set the password for the active archive
ZipArchive::setEncryptionName() - Set the encryption method of an entry defined by its name