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PHP/Utility Function/pack - История изменений
2026-04-05T11:39:29Z
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в 10:37, 26 мая 2010
2010-05-26T10:37:32Z
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Admin: 1 версия
2010-05-26T07:08:00Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>==Format characters for pack( ) and unpack( )==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="html4strict"><br />
<br />
Format character Data type<br />
a NUL-padded string<br />
A Space-padded string<br />
h Hex string, low nibble first<br />
H Hex string, high nibble first<br />
c signed char<br />
C unsigned char<br />
s signed short<br />
S unsigned short<br />
n unsigned short<br />
v unsigned short<br />
i signed int (machine-dependent size and byte order)<br />
I unsigned int (machine-dependent size and byte order)<br />
l signed long (32 bit, machine byte order)<br />
L unsigned long (32 bit, machine byte order)<br />
N unsigned long (32 bit, big endian byte order)<br />
V unsigned long (32 bit, little endian byte order)<br />
f float (machine-dependent size and representation)<br />
d double (machine-dependent size and representation)<br />
x NUL byte<br />
X Back up one byte<br />
@ NUL-fill to absolute position<br />
<br />
</source><br />
<br />
<br />
<br />
<br />
==Generating fixed-width field data records==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="html4strict"><br />
<br />
<?php<br />
$books = array( array("A","S",1927),<br />
array("T","W",1979) );<br />
foreach ($books as $book) {<br />
print pack("A25A15A4", $book[0], $book[1], $book[2]) . "\n";<br />
}<br />
?><br />
<br />
</source></div>
Admin