Core Function BinaryMid
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| − | $binary = Pack("z0", "The quick brown FoX") | + | $binary = Pack("z0", "The quick brown FoX"); |
| − | $binary2 = BinaryMid($binary, 10) | + | $binary2 = BinaryMid($binary, 10); |
| − | println("b1: " . Unpack("z0", $binary)) | + | println("b1: " . Unpack("z0", $binary)); |
| − | println("b2: " . Unpack("z0", $binary2)) | + | println("b2: " . Unpack("z0", $binary2)); |
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| − | $binary = Pack("z0", "The quick brown FoX") | + | $binary = Pack("z0", "The quick brown FoX"); |
| − | $binary2 = BinaryMid($binary, 16, 3) | + | $binary2 = BinaryMid($binary, 16, 3); |
| − | println("b1: " . Unpack("z0", $binary)) | + | println("b1: " . Unpack("z0", $binary)); |
| − | println("b2: " . Unpack("z0", $binary2)) | + | println("b2: " . Unpack("z0", $binary2)); |
</syntaxhighlight> | </syntaxhighlight> | ||
[[Category:Core Function]] | [[Category:Core Function]] | ||
Revision as of 17:40, 19 November 2011
BinaryMid( <binary-array>, <start>, <length> )
Contents |
Description
Create a binary variable by extracting a number of bytes from another binary variable.
Parameters
binary-array
The binary variable to use.
start
Position to start from.
length
Optional; How many bytes to copy.
Default is all remaining bytes;
Return Value
Success: Returns a new binary variable.
Failure: Returns 0.
Remarks
This does not modify the original.
Example
Copy from "brown" to end of the data:
$binary = Pack("z0", "The quick brown FoX"); $binary2 = BinaryMid($binary, 10); println("b1: " . Unpack("z0", $binary)); println("b2: " . Unpack("z0", $binary2));
Copy just the "FoX" part example:
$binary = Pack("z0", "The quick brown FoX"); $binary2 = BinaryMid($binary, 16, 3); println("b1: " . Unpack("z0", $binary)); println("b2: " . Unpack("z0", $binary2));
