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/*
php 打印出字符串的16进制数据
*/
function hex_dump($data, $newline="n")
{
static $from = '';
static $to = '';
static $width = 16; # number of bytes per line
static $pad = '.'; # padding for non-visible characters
if ($from==='')
{
for ($i=0; $i
{
$from .= chr($i);
$to .= ($i >= 0x20 && $i
}
}
$hex = str_split(bin2hex($data), $width*2);
$chars = str_split(strtr($data, $from, $to), $width);
$offset = 0;
foreach ($hex as $i => $line)
{
echo sprintf('%6X',$offset).' : '.implode(' ', str_split($line,2)) . ' [' . $chars[$i] . ']' . $newline;
$offset += $width;
}
}
$info="this is a testx00x99hex_dump";
print_r(hex_dump($info));
/*
输出结果：
0 : 74 68 69 73 20 69 73 20 61 20 74 65 73 74 00 99 [this is a test..]
10 : 68 65 78 5f 64 75 6d 70 [hex_dump]
*/
?>
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