September 2001
Intermediate to advanced
768 pages
32h 45m
English
Content preview from PHP Functions Essential Reference
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unpack
array unpack(string format, string binary_string)
| format | Format to use when unpacking |
| binary_string | Binary string to unpack |
Parses a binary string according to a user-defined format.
Returns:
Associative array; FALSE on error
Description:
unpack() is the complement of pack()—it transforms binary data into an associative array based on the format specified.
The format string consists of a format character, optionally followed by an integer. Depending on the format character, the integer either indicates a length or a quantity. The integer should be followed by a string. The string is used as the key for entries in the associative array that are created by the format code. If the format code creates more than one entry in the array, ...
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