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[2006-11-22 14:09 UTC] pprasse at actindo dot de
Description:
------------
unpack( "a*", $string ) does not work as expected when last character of $string is "\0"
Reproduce code:
---------------
<?php
$string = "abc\0";
$arr = unpack( "a*buf", $string );
printf( "strlen = %d\n", strlen($arr['buf']) );
printf( "hex dump:\t" );
for( $i=0; $i<strlen($arr['buf']); $i++ )
printf( " %02x", ord($arr['buf']{$i}) );
printf( "\n" );
?>
Expected result:
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strlen = 4
hex dump: 61 62 63 00
Actual result:
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strlen = 3
hex dump: 61 62 63
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Last updated: Fri Oct 31 00:00:01 2025 UTC |
Expected behaviour. $var = "str"; $packed = pack("a5", $var); // 5 bytes long NULL-padded string var_dump(unpack("a*", $packed)); // the NULL-padding is removed to get the original data.is this also expected behavior? <?php $var = "str"; $packed = pack("a5", $var); // 5 bytes long NULL-padded string var_dump(unpack("a5", $packed)); array(1) { [1]=> string(3) "str" }