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--- uphp:functions:unpack [2019/12/20 09:36]
admin created
+++ uphp:functions:unpack [2021/09/13 05:57]
@@ Line 1: / Line 1: @@
-======unpack======
-<badge>WMMEGA FW >= 2.1167</badge>
-<html>unpack — Unpack data from binary string</html>
-====Description====
-<well size="sm"><html>
-<span style="font-size:125%;color:green">mixed
-<span style="color:black">pack (
-<span style="color:green">string
-<span style="color:blue">$format<span style="color:black">,
-<span style="color:green">binary string
-<span style="color:blue">$value
-<span style="color:black">)
-</html></well>
-<html>Unpacks from a binary string into an array according to the given format. </html>
-====Parameters====
-<html><b><span style="color:blue">$format<span style="color:black"></b>:  <b><span style="color:green">String<span style="color:black"></b> containing one of the following values:</html>
-^ Value  ^ Description                                      ^
-| l      | signed long (always 32 bit, machine byte order)  |
-| L      | unsigned long (always 32 bit, machine byte order)  |
-| f      | floating point(always 32 bit, machine byte order)  |
-| c      | signed byte   |
-| C      | unsigned byte |
-<html><b><span style="color:blue">$value<span style="color:black"></b>: Value is a binary string passed by reference (&).
-====Return Values====
-<html><b><span style="color:green">mixed<span style="color:black"></b></html>:  Unpacked value from binary string
-====Example====
-<code php>
-<?
-  v=-1234;
-  $str=pack("l",$v);
-  print("\r\nPacked signed long:\r\n");
-  for ($i=0;$i<4;$i++) {
-    $c=charat($str,$i);
-    printf("%02X ",$c);
-  }
-  print("\r\nUn packed signed long:\r\n");
-  $v=unpack("l",&$str);
-  print($v);
-?>
-</code>
-====See Also====
-[[pack()]] - Pack a binary string

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