PHP Replace binary file at hex address -


i want modify binary file server side of aprox. 700kb change url in save it.

my first idea use bin hex , preg_replace replace url in binary.

the adress url in binary same, need change every time function called.

is there better/faster way ?

example:

somesite.com/api***

i want replace *** numbers var example.

*** between hex adress 00010edb-00010edd

thanks!

if string @ fixed position, can write data directly:

$position=hexdec("00010edb"); // have pre-calculate once $data="some data"; // replacement if ($f=fopen("your_file", "r+")) {     fseek($f, $position);     fwrite($f, $data);     fclose($f); } else {     echo "can't open file"; }

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