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Phar
PHP Manual

# Predefined Constants

The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.

Phar compression constants
Constant | Value | Description
--- | --- | ---
`Phar::NONE` (integer) | 0x00000000 | no compression
`Phar::COMPRESSED` (integer) | 0x0000F000 | bitmask that can be used with file flags to determine if any compression is present
`Phar::GZ` (integer) | 0x00001000 | zlib (gzip) compression
`Phar::BZ2` (integer) | 0x00002000 | bzip2 compression

Phar file format constants
Constant | Value | Description
--- | --- | ---
`Phar::SAME` (integer) | 0 | retain the same file format
`Phar::PHAR` (integer) | 1 | phar file format
`Phar::TAR` (integer) | 2 | tar file format
`Phar::ZIP` (integer) | 3 | zip file format

Phar signature constants
Constant | Value | Description
--- | --- | ---
`Phar::MD5` (integer) | 0x0001 | signature with md5 hash algorithm
`Phar::SHA1` (integer) | 0x0002 | signature with sha1 hash algorithm
`Phar::SHA256` (integer) | 0x0003 | signature with sha256 hash algorithm (requires hash extension)
`Phar::SHA512` (integer) | 0x0004 | signature with sha512 hash algorithm (requires hash extension)
`Phar::OPENSSL` (integer) | 0x0010 | signature with OpenSSL public/private key pair. This is a true, asymmetric key signature.

Phar webPhar mime override constants
Constant | Value | Description
--- | --- | ---
`Phar::PHP` (integer) | 1 | used to instruct the mimeoverrides parameter of Phar::webPhar that the extension should be parsed as a PHP file
`Phar::PHPS` (integer) | 2 | used to instruct the mimeoverrides parameter of Phar::webPhar that the extension should be parsed as a PHP source file through highlight_file