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Package php-binary-reader
Short Description Lightweight binary reader for PHP
License MIT
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Informations about the package php-binary-reader
PhpBinaryReader
Why?
You probably wouldn't be here if you hadn't run into a scenario where you needed to leverage PHP to read a stream of binary data. The honest truth is PHP really stinks at this stuff, but as long as we're going to be using it we may as well do our best to make it as painless as possible.
The purpose of this binary reader is to accept a string of file contents or file resource and provide a set of methods inspired by .NET to traverse it.
Note on Endians
The reader is designed to work on little endian machines, which is going to apply to most scenarios as all x86 and x86-64 machines are little endian. If you have somehow found yourself on a big endian machine, you need to inform the class or you may not be able to properly read signed integers in the file you're parsing.
Example Usage
Methods
__construct($input, $endian) a string or file resource must be provided to use this class, an endian is optional (string [big|little], or use the constants in the Endian class), it will default to little if not provided.
readUInt8() returns a single 8 bit byte as an unsigned integer
readInt8() returns a single 8 bit byte as a signed integer
readUInt16() returns a 16-bit short as an unsigned integer
readInt16() returns a 16-bit short as a signed integer
readUInt32() returns a 32-bit unsigned integer
readInt32() returns a 32-bit signed integer
readUInt64() returns a 64-bit unsigned integer
readInt64() returns a 64-bit signed integer
readSingle() returns a 4-bytes floating-point
readUBits($length) returns a variable length of bits (unsigned)
readBits($length) returns a variable length of bits (signed)
readBytes($length) returns a variable length of bytes
readString($length) returns a variable length string
readAlignedString($length) aligns the pointer to 0 bits and returns a variable length string
align() aligns the pointer back to 0 bits
isEof() returns true if the pointer is on the last byte of the file
getPosition() returns the current byte position in the file
setPosition($position) sets the current byte position
getCurrentBit() returns the current bit position in the file
setCurrentBit($currentBit) sets the current bit position
Contributing
Contributions must follow the PSR2 coding standards and must not degrade 100% coverage.
Acknowledgements
Significant portions of the work is based on Graylin Kim's Python bit/byte reader in sc2reader_
.. _sc2reader: https://github.com/GraylinKim/sc2reader
