How to edit large files in Binary using php
Posted: Sun Dec 05, 2010 5:58 pm
Experts,
I want to replace a set of binary charators in some files (1-2MB sized) using php.
I tried below functions. but they got overflow when loading file to variable.
Please tell me another way to do it.
Thankz.
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I want to replace a set of binary charators in some files (1-2MB sized) using php.
I tried below functions. but they got overflow when loading file to variable.
Code: Select all
function gethex()
{
$file = 'source.mp3';
$handle = fopen($file, 'r') or die('permission?');
while(!feof($handle))
{
foreach(unpack('C*',fgets($handle)) as $dec)
{
$tmp = dechex($dec);
$this->hex[] .= strtoupper(str_repeat('0',2-strlen($tmp)).$tmp);
}
}
return join($this->hex);
}
//****************************************
function writehex($hexcode)
{
$file = 'test.mp3';
foreach(str_split($hexcode,2) as $hex)
{
$tmp .= pack('C*', hexdec($hex));
}
$handle = fopen($file, 'w+') or die('permission?');
fwrite($handle, $tmp);
} Please tell me another way to do it.
Thankz.
[ Post made via Mobile Device ]